RFC 9367 | GOST Cipher Suites for TLS 1.3 | February 2023
Smyshlyaev, et al. | Informational | [Page]

Stream:
  Independent Submission
RFC:
  9367
Category:
  Informational
Published:
  February 2023
ISSN:
  2070-1721
Authors:
  S. Smyshlyaev, Ed.
  CryptoPro
  E. Alekseev
  CryptoPro
  E. Griboedova
  CryptoPro
  A. Babueva
  CryptoPro
  L. Nikiforova
  CryptoPro

# RFC 9367

# GOST Cipher Suites for Transport Layer Security (TLS) Protocol Version 1.3

## Abstract

The purpose of this document is to make the Russian cryptographic standards available to the Internet community for their implementation in the Transport Layer Security (TLS) Protocol Version 1.3.¶

This document defines the cipher suites, signature schemes, and key exchange mechanisms for using Russian cryptographic standards, called GOST algorithms, with TLS Version 1.3. Additionally, this document specifies a profile of TLS 1.3 with GOST algorithms to facilitate interoperable implementations. The IETF has not endorsed the cipher suites, signature schemes, or key exchange mechanisms described in this document.¶

## Status of This Memo

This document is not an Internet Standards Track specification; it is published for informational purposes.¶

This is a contribution to the RFC Series, independently of any other RFC stream. The RFC Editor has chosen to publish this document at its discretion and makes no statement about its value for implementation or deployment. Documents approved for publication by the RFC Editor are not candidates for any level of Internet Standard; see Section 2 of RFC 7841.¶

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc9367.¶

## Copyright Notice

Copyright (c) 2023 IETF Trust and the persons identified as the document authors. All rights reserved.¶

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document.¶

## 1. Introduction

This document defines four new cipher suites (the TLS13_GOST cipher suites) and seven new signature schemes (the TLS13_GOST signature schemes) for the Transport Layer Security (TLS) Protocol Version 1.3 that are based on Russian cryptographic standards GOST R 34.12-2015 [RFC7801], GOST R 34.11-2012 [RFC6986], and GOST R 34.10-2012 [RFC7091].¶

The TLS13_GOST cipher suites (see Section 4) have the following values:¶

- TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_L = {0xC1, 0x03}¶
- TLS_GOSTR341112_256_WITH_MAGMA_MGM_L = {0xC1, 0x04}¶
- TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_S = {0xC1, 0x05}¶
- TLS_GOSTR341112_256_WITH_MAGMA_MGM_S = {0xC1, 0x06}¶

Each TLS13_GOST cipher suite specifies a pair (record protection algorithm, hash algorithm) such that:¶

- The record protection algorithm is the Authenticated Encryption with Associated Data (AEAD) algorithm (see Section 4.1.1) based on the GOST R 34.12-2015 block cipher [RFC7801] in the Multilinear Galois Mode (MGM) [RFC9058] and the external re-keying approach (see [RFC8645]) intended for increasing the lifetime of symmetric keys used to protect records.¶
- The hash algorithm is the GOST R 34.11-2012 algorithm [RFC6986].¶

Note: The TLS13_GOST cipher suites are divided into two types: the "_S" (strong) cipher suites and the "_L" (light) cipher suites (depending on the key lifetime limitations, see Sections 4.1.2 and 4.1.3).¶

The TLS13_GOST signature schemes have the following values:¶

- gostr34102012_256a = 0x0709¶
- gostr34102012_256b = 0x070A¶
- gostr34102012_256c = 0x070B¶
- gostr34102012_256d = 0x070C¶
- gostr34102012_512a = 0x070D¶
- gostr34102012_512b = 0x070E¶
- gostr34102012_512c = 0x070F¶

Each TLS13_GOST signature scheme specifies a pair (signature algorithm, elliptic curve) such that:¶

- The signature algorithm is the GOST R 34.10-2012 algorithm [RFC7091].¶
- The elliptic curve is one of the curves defined in Section 5.2.¶

This document also specifies the key exchange mechanism with GOST algorithms for the TLS 1.3 protocol (see Section 6.1).¶

Additionally, this document specifies a TLS13_GOST profile of the TLS 1.3 protocol with GOST algorithms so that implementers can produce interoperable implementations. It uses TLS13_GOST cipher suites, TLS13_GOST signature schemes, and key exchange mechanisms that are defined in this document.¶

## 2. Conventions Used in This Document

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.¶

## 3. Basic Terms and Definitions

This document follows the terminology from [RFC8446BIS] for "main secret".¶

This document uses the following terms and definitions for the sets and operations on the elements of these sets:¶

B_t
  The set of byte strings of length t, t >= 0; for t = 0, the B_t set consists of a single empty string of zero length. If A is an element in B_t, then A = (a_1, a_2, ... , a_t), where a_1, a_2, ... , a_t are in {0, ... , 255}.¶
B*
  The set of all byte strings of a finite length (hereinafter referred to as strings) including the empty string.¶
A[i..j]
  The string A[i..j] = (a_i, a_{i+1}, ... , a_j) in B_{j-i+1}, where A = (a_1, a_2, ... , a_t) in B_t and 1<=i<=j<=t.¶
A[i]
  The integer a_i in {0, ... , 255}, where A = (a_1, a_2, ... , a_t) in B_t and 1<=i<=t.¶
|A|
  The length of the byte string A in bytes.¶
A | C
  The concatenation of strings A and C both belonging to B*; i.e., a string in B_{|A|+|C|}, where the left substring in B_|A| is equal to A and the right substring in B_|C| is equal to C.¶
i & j
  Bitwise AND of integers i and j.¶
STR_t
  The transformation that maps an integer i = 256t-1 * i_1 + ... + 256 * i_{t-1} + i_t into the byte string STR_t(i) = (i_1, ... , i_t) in B_t (the interpretation of the integer as a byte string in big-endian format).¶
str_t
  The transformation that maps an integer i = 256t-1 * i_t + ... + 256 * i_2 + i_1 into the byte string str_t(i) = (i_1, ... , i_t) in B_t (the interpretation of the integer as a byte string in little-endian format).¶
k
  The length of the block cipher key in bytes.¶
n
  The length of the block cipher block in bytes.¶
IVlen
  The length of the initialization vector in bytes.¶
S
  The length of the authentication tag in bytes.¶
E_i
  The elliptic curve indicated by the client in "supported_groups" extension.¶
O_i
  The zero point of the elliptic curve E_i.¶
m_i
  The order of the group of points belonging to the elliptic curve E_i.¶
q_i
  The order of the cyclic subgroup of the group of points belonging to the elliptic curve E_i.¶
h_i
  The cofactor of the cyclic subgroup that is equal to m_i / q_i.¶
Q_sign
  The public key stored in the endpoint's certificate.¶
d_sign
  The private key that corresponds to the Q_sign key.¶
P_i
  The point of the elliptic curve E_i of the order q_i.¶
(d_C^i, Q_C^i)
  The client's ephemeral key pair that consists of the private key and the public key corresponding to the elliptic curve E_i.¶
(d_S^i, Q_S^i)
  The server's ephemeral key pair that consists of the private key and the public key corresponding to the elliptic curve E_i.¶

## 4. Cipher Suite Definition

This section defines the following four TLS13_GOST cipher suites:¶

- CipherSuite TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_L = {0xC1, 0x03};¶
- CipherSuite TLS_GOSTR341112_256_WITH_MAGMA_MGM_L = {0xC1, 0x04};¶
- CipherSuite TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_S = {0xC1, 0x05};¶
- CipherSuite TLS_GOSTR341112_256_WITH_MAGMA_MGM_S = {0xC1, 0x06}.¶

Each cipher suite specifies a pair consisting of a record protection algorithm (see Section 4.1) and a hash algorithm (Section 4.2).¶

### 4.1. Record Protection Algorithm

In accordance with Section 5.2 of [RFC8446], the record protection algorithm translates a TLSPlaintext structure into a TLSCiphertext structure. If the TLS13_GOST cipher suite is negotiated, the encrypted_record field of the TLSCiphertext structure MUST be set to the AEADEncrypted value computed as follows:¶

AEADEncrypted = AEAD-Encrypt(sender_record_write_key, nonce, additional_data, plaintext),¶

where¶

- the AEAD-Encrypt function is defined in Section 4.1.1;¶

- the sender_record_write_key is a key derived from sender_write_key (see Section 7.3 of [RFC8446]) using the TLSTREE function defined in Section 4.1.2 and sequence number seqnum as follows:¶

  - sender_record_write_key = TLSTREE(sender_write_key, seqnum);¶
- the nonce is a value derived from sequence number seqnum and sender_write_iv (see Section 7.3 of [RFC8446]) in accordance with Section 5.3 of [RFC8446];¶
- the additional_data value is a record header that is generated in accordance with Section 5.2 of [RFC8446];¶
- the plaintext value is the TLSInnerPlaintext structure encoded in accordance with Section 5.2 of [RFC8446].¶

Note 1: The AEAD-Encrypt function is exactly the same as the AEAD-Encrypt function defined in [RFC8446], such that the key (the first argument) is calculated from sender_write_key and sequence number seqnum for each message separately to support the external re-keying approach according to [RFC8645].¶

Note 2: Sequence number is a value in the range 0-SNMAX, where the SNMAX value is defined in Section 4.1.3. The SNMAX parameter is specified by a particular TLS13_GOST cipher suite to limit an amount of data that can be encrypted under the same traffic key material (sender_write_key, sender_write_iv).¶

The record deprotection algorithm reverses the process of the record protection. In order to decrypt and verify a protected record with sequence number seqnum, the algorithm takes sender_record_write_key as an input, which is derived from sender_write_key, nonce, additional_data, and the AEADEncrypted value. The algorithm outputs the res value that is either plaintext or an error indicating that the decryption failed. If a TLS13_GOST cipher suite is negotiated, the res value MUST be computed as follows:¶

res = AEAD-Decrypt(sender_record_write_key, nonce, additional_data, AEADEncrypted),¶

where the AEAD-Decrypt function is as defined in Section 4.1.1.¶

Note: The AEAD-Decrypt function is exactly the same as the AEAD-Decrypt function defined in [RFC8446], such that the key (the first argument) is calculated from sender_write_key and sequence number seqnum for each message separately to support the external re-keying approach according to [RFC8645].¶

#### 4.1.1. AEAD Algorithm

The AEAD-Encrypt and AEAD-Decrypt functions are defined as follows:¶

    +-------------------------------------------------------------------+
    | AEAD-Encrypt(K, nonce, A, P)                                      |
    |-------------------------------------------------------------------|
    | Input:                                                            |
    | - encryption key K in B_k,                                        |
    | - unique vector nonce in B_IVlen,                                 |
    | - additional authenticated data A in B_r, r >= 0,                 |
    | - plaintext P in B_t, t >= 0.                                     |
    | Output:                                                           |
    | - ciphertext C in B_{|P|},                                        |
    | - authentication tag T in B_S.                                    |
    |-------------------------------------------------------------------|
    | 1. MGMnonce = STR_1(nonce[1] & 0x7f) | nonce[2..IVlen];           |
    | 2. (MGMnonce, A, C, T) = MGM-Encrypt(K, MGMnonce, A, P);          |
    | 3. Return C | T.                                                  |
    +-------------------------------------------------------------------+

    +-------------------------------------------------------------------+
    | AEAD-Decrypt(K, nonce, A, C | T)                                  |
    |-------------------------------------------------------------------|
    | Input:                                                            |
    | - encryption key K in B_k,                                        |
    | - unique vector nonce in B_IVlen,                                 |
    | - additional authenticated data A in B_r, r >= 0,                 |
    | - ciphertext C in B_t, t >= 0,                                    |
    | - authentication tag T in B_S.                                    |
    | Output:                                                           |
    | - plaintext P in B_{|C|} or FAIL.                                 |
    |-------------------------------------------------------------------|
    | 1. MGMnonce = STR_1(nonce[1] & 0x7f) | nonce[2..IVlen];           |
    | 2. res' = MGM-Decrypt(K, MGMnonce, A, C, T);                      |
    | 3. IF res' = FAIL then return FAIL;                               |
    | 4. IF res' = (A, P) then return P.                                |
    +-------------------------------------------------------------------+

¶

where¶

- the MGM-Encrypt and MGM-Decrypt functions are defined in [RFC9058];¶
- the length of authentication tag T is equal to n bytes (S = n);¶
- the length of the nonce parameter is equal to n bytes (IVlen = n).¶

Cipher suites TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_L and TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_S MUST use Kuznyechik [RFC7801] as a base block cipher for the AEAD algorithm. The block length n is 16 bytes (n = 16) and the key length k is 32 bytes (k = 32).¶

Cipher suites TLS_GOSTR341112_256_WITH_MAGMA_MGM_L and TLS_GOSTR341112_256_WITH_MAGMA_MGM_S MUST use Magma [RFC8891] as a base block cipher for the AEAD algorithm. The block length n is 8 bytes (n = 8) and the key length k is 32 bytes (k = 32).¶

#### 4.1.2. TLSTREE

The TLS13_GOST cipher suites use the TLSTREE function to support the external re-keying approach (see [RFC8645]). The TLSTREE function is defined as follows:¶

TLSTREE(K_root, i) = KDF_3(KDF_2(KDF_1(K_root, STR_8(i & C_1)), STR_8(i & C_2)), STR_8(i & C_3)),¶

where¶

- K_root in B_32;¶
- i in {0, 1, ... , 2^64 - 1};¶

- KDF_j(K, D), j = 1, 2, 3, is the key derivation function defined as follows:¶

  - KDF_1(K, D) = KDF_GOSTR3411_2012_256(K, "level1", D),¶
  - KDF_2(K, D) = KDF_GOSTR3411_2012_256(K, "level2", D),¶
  - KDF_3(K, D) = KDF_GOSTR3411_2012_256(K, "level3", D),¶

  where the KDF_GOSTR3411_2012_256 function is defined in [RFC7836], K in B_32, D in B_8;¶

- C_1, C_2, C_3 are the constants defined by each cipher suite as follows:¶

Table 1
CipherSuites | C_1, C_2, C_3
--- | ---
TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_L | C_1=0xf800000000000000¶ C_2=0xfffffff000000000¶ C_3=0xffffffffffffe000¶
TLS_GOSTR341112_256_WITH_MAGMA_MGM_L | C_1=0xffe0000000000000¶ C_2=0xffffffffc0000000¶ C_3=0xffffffffffffff80¶
TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_S | C_1=0xffffffffe0000000¶ C_2=0xffffffffffff0000¶ C_3=0xfffffffffffffff8¶
TLS_GOSTR341112_256_WITH_MAGMA_MGM_S | C_1=0xfffffffffc000000¶ C_2=0xffffffffffffe000¶ C_3=0xffffffffffffffff¶

#### 4.1.3. SNMAX Parameter

The SNMAX parameter is the maximum number of records encrypted under the same traffic key material (sender_write_key and sender_write_iv) and is defined by each cipher suite as follows:¶

Table 2
CipherSuites | SNMAX
--- | ---
TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_L | SNMAX = 2^64 - 1
TLS_GOSTR341112_256_WITH_MAGMA_MGM_L | SNMAX = 2^64 - 1
TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_S | SNMAX = 2^42 - 1
TLS_GOSTR341112_256_WITH_MAGMA_MGM_S | SNMAX = 2^39 - 1

### 4.2. Hash Algorithm

The Hash algorithm is used for the key derivation process (see Section 7.1 of [RFC8446]), Finished message calculation (see Section 4.4.4 of [RFC8446]), Transcript-Hash function computation (see Section 4.4.1 of [RFC8446]), Pre-Shared Key (PSK) binder value calculation (see Section 4.2.11.2 of [RFC8446]), external re-keying approach (see Section 4.1.2), and other purposes.¶

If a TLS13_GOST cipher suite is negotiated, the Hash algorithm MUST be the GOST R 34.11-2012 hash algorithm [RFC6986] with a 32-byte (256-bit) hash value.¶

## 5. Signature Scheme Definition

This section defines the following seven TLS13_GOST signature schemes:¶

    enum {
        gostr34102012_256a(0x0709),
        gostr34102012_256b(0x070A),
        gostr34102012_256c(0x070B),
        gostr34102012_256d(0x070C),
        gostr34102012_512a(0x070D),
        gostr34102012_512b(0x070E),
        gostr34102012_512c(0x070F)
    } SignatureScheme;

¶

One of the TLS13_GOST signature schemes listed above SHOULD be used with the TLS13_GOST profile.¶

Each signature scheme specifies a pair consisting of the signature algorithm (see Section 5.1) and the elliptic curve (see Section 5.2). The procedure to calculate the signature value using TLS13_GOST signature schemes is defined in Section 5.3.¶

### 5.1. Signature Algorithm

Signature algorithms corresponding to the TLS13_GOST signature schemes are defined as follows:¶

Table 3
SignatureScheme Value | Signature Algorithm | References
--- | --- | ---
gostr34102012_256a | GOST R 34.10-2012, 32-byte key length | RFC 7091
gostr34102012_256b | GOST R 34.10-2012, 32-byte key length | RFC 7091
gostr34102012_256c | GOST R 34.10-2012, 32-byte key length | RFC 7091
gostr34102012_256d | GOST R 34.10-2012, 32-byte key length | RFC 7091
gostr34102012_512a | GOST R 34.10-2012, 64-byte key length | RFC 7091
gostr34102012_512b | GOST R 34.10-2012, 64-byte key length | RFC 7091
gostr34102012_512c | GOST R 34.10-2012, 64-byte key length | RFC 7091

### 5.2. Elliptic Curve

Elliptic curves corresponding to the TLS13_GOST signature schemes are defined as follows:¶

Table 4
SignatureScheme Value | Curve Identifier Value | References
--- | --- | ---
gostr34102012_256a | id-tc26-gost-3410-2012-256-paramSetA | RFC 7836
gostr34102012_256b | id-GostR3410-2001-CryptoPro-A-ParamSet | RFC 4357
gostr34102012_256c | id-GostR3410-2001-CryptoPro-B-ParamSet | RFC 4357
gostr34102012_256d | id-GostR3410-2001-CryptoPro-C-ParamSet | RFC 4357
gostr34102012_512a | id-tc26-gost-3410-12-512-paramSetA | RFC 7836
gostr34102012_512b | id-tc26-gost-3410-12-512-paramSetB | RFC 7836
gostr34102012_512c | id-tc26-gost-3410-2012-512-paramSetC | RFC 7836

### 5.3. SIGN Function

If the TLS13_GOST signature scheme is used, the signature value in the CertificateVerify message (see Section 6.3.4) MUST be calculated using the SIGN function defined as follows:¶

    +-----------------------------------------------------+
    |  SIGN(d_sign, M)                                    |
    |-----------------------------------------------------|
    |  Input:                                             |
    |  - the sign key d_sign: 0 < d_sign < q;             |
    |  - the byte string M in B*.                         |
    |  Output:                                            |
    |  - signature value sgn in B_{2*l}.                  |
    |-----------------------------------------------------|
    |  1. (r, s) = SIGNGOST(d_sign, M)                    |
    |  2. Return str_l(r) | str_l(s).                     |
    |-----------------------------------------------------+

¶

where¶

- q is the subgroup order of the group of points of the elliptic curve;¶

- l is defined as follows:¶

  - l = 32 for the gostr34102012_256a, gostr34102012_256b, gostr34102012_256c, and gostr34102012_256d signature schemes;¶
  - l = 64 for the gostr34102012_512a, gostr34102012_512b, and gostr34102012_512c signature schemes;¶
- SIGNGOST is an algorithm that takes a private key d_sign and a message M as an input and returns a pair of integers (r, s) that is calculated during the signature generation process in accordance with the GOST R 34.10-2012 signature algorithm (see Section 6.1 of [RFC7091]).¶

Note: The signature value sgn is the concatenation of two strings that are byte representations of r and s values in the little-endian format.¶

## 6. Key Exchange and Authentication

The key exchange and authentication process for using the TLS13_GOST profile is defined in Sections 6.1, 6.2, and 6.3.¶

### 6.1. Key Exchange

The TLS13_GOST profile supports three basic key exchange modes that are defined in [RFC8446]: Ephemeral Elliptic Curve Diffie-Hellman (ECDHE), PSK-only, and PSK with ECDHE.¶

Note: In accordance with [RFC8446], TLS 1.3 also supports key exchange modes based on the Diffie-Hellman protocol over finite fields. However, the TLS13_GOST profile MUST use modes based on the Diffie-Hellman protocol over elliptic curves.¶

In accordance with [RFC8446], PSKs can be divided into two types:¶

- internal PSKs that can be established during the previous connection;¶
- external PSKs that can be established out of band.¶

If the TLS13_GOST profile is used, PSK-only key exchange mode SHOULD be established via the internal PSKs, and external PSKs SHOULD be used only in PSK with ECDHE mode (see more in Section 9).¶

If the TLS13_GOST profile is used and ECDHE or PSK with ECDHE key exchange mode is used, the ECDHE shared secret SHOULD be calculated in accordance with Section 6.1.1 on the basis of one of the elliptic curves defined in Section 6.1.2.¶

#### 6.1.1. ECDHE Shared Secret Calculation

If the TLS13_GOST profile is used, the ECDHE shared secret SHOULD be calculated in accordance with Sections 6.1.1.1 and 6.1.1.2. The public ephemeral keys used to obtain the ECDHE shared secret SHOULD be represented in the format described in Section 6.1.1.3.¶

##### 6.1.1.1. ECDHE Shared Secret Calculation on the Client Side

The client calculates the ECDHE shared secret in accordance with the following steps:¶

Step 1.

  The client chooses from all supported curves E_1, ..., E_R the set of curves E_{i_1}, ..., E_{i_r}, 1 <= i_1 <= i_r <= R, where¶

  - r >= 1 in the case of the first ClientHello message;¶
  - r = 1 in the case of responding to the HelloRetryRequest message; E_{i_1} corresponds to the curve indicated in the "key_share" extension in the HelloRetryRequest message.¶
Step 2.

  The client generates ephemeral key pairs (d_C^{i_1}, Q_C^{i_1}), ..., (d_C^{i_r}, Q_C^{i_r}) corresponding to the curves E_{i_1}, ..., E_{i_r}, where for each i in {i_1, ..., i_r}:¶

  - d_C^i is chosen from {1, ..., q_i - 1} at random;¶
  - Q_C^i = d_C^i * P_i.¶
Step 3.

  The client sends the ClientHello message specified in accordance with Section 4.1.2 of [RFC8446] and Section 6.3.1 that contains:¶

  - "key_share" extension with public ephemeral keys Q_C^{i_1}, ..., Q_C^{i_r} built in accordance with Section 4.2.8 of [RFC8446];¶
  - "supported_groups" extension with supported curves E_1, ..., E_R built in accordance with Section 4.2.7 of [RFC8446].¶

  Note: The client MAY send an empty "key_share" extension in the first ClientHello message to request a group selection from the server in the HelloRetryRequest message and to generate an ephemeral key for the selected group only. The ECDHE shared secret may be calculated without sending HelloRetryRequest message if the "key_share" extension in the first ClientHello message contains the value corresponding to the curve that is selected by the server.¶

Step 4.

  If the HelloRetryRequest message is received, the client MUST return to Step 1 and choose correct parameters in accordance with Section 4.1.2 of [RFC8446]. If the ServerHello message is received, the client proceeds to the next step. In other cases, the client MUST terminate the connection with the "unexpected_message" alert.¶

Step 5.

  The client extracts curve E_res and ephemeral key Q_S^res, res in {1, ..., R}, from the ServerHello message and checks whether Q_S^res belongs to E_res. If this check fails, the client MUST terminate the connection with "handshake_failure" alert.¶

Step 6.

  The client generates Q^ECDHE:¶

  - Q^ECDHE = (X^ECDHE, Y^ECDHE) = (h_res * d_C^res) * Q_S^res.¶
Step 7.

  The client MUST check whether the calculated shared secret Q^ECDHE is not equal to the zero point O_res. If this check fails, the client MUST terminate the connection with "handshake_failure" alert.¶

Step 8.

  The ECDHE shared secret is the byte representation of the coordinate X^ECDHE of the point Q^ECDHE in the little-endian format:¶

  ECDHE = str_{coordinate_length}(X^ECDHE),¶

  where the coordinate_length value is defined by the particular elliptic curve (see Section 6.1.2).¶

##### 6.1.1.2. ECDHE Shared Secret Calculation on Server Side

Upon receiving the ClientHello message, the server calculates the ECDHE shared secret in accordance with the following steps:¶

Step 1.

  The server chooses the curve E_res, res in {1, ..., R}, from the list of the curves E_1, ..., E_R indicated in the "supported_groups" extension in the ClientHello message and the corresponding public ephemeral key Q_C^res from the list Q_C^{i_1}, ..., Q_C^{i_r}, 1 <= i_1 <= i_r <= R, indicated in the "key_share" extension. If the corresponding public ephemeral key is not found (res in {1, ..., R}\{i_1, ..., i_r}), the server MUST send the HelloRetryRequest message with the "key_share" extension indicating the selected elliptic curve E_res and wait for the new ClientHello message.¶

Step 2.

  The server checks whether Q_C^res belongs to E_res. If this check fails, the server MUST terminate the connection with "handshake_failure" alert.¶

Step 3.

  The server generates ephemeral key pair (d_S^res, Q_S^res) corresponding to E_res:¶

  - d_S^res is chosen from {1, ..., q_res - 1} at random;¶
  - Q_S^res = d_S^res * P_res.¶
Step 4.

  The server sends the ServerHello message generated in accordance with Section 4.1.3 of [RFC8446] and Section 6.3.1 with the "key_share" extension that contains public ephemeral key Q_S^res corresponding to E_res.¶

Step 5.

  The server generates Q^ECDHE:¶

  Q^ECDHE = (X^ECDHE, Y^ECDHE) = (h_res * d_S^res) * Q_C^res.¶

Step 6.

  The server MUST check whether the calculated shared secret Q^ECDHE is not equal to the zero point O_res. If this check fails, the server MUST abort the handshake with "handshake_failure" alert.¶

Step 7.

  The ECDHE shared secret is the byte representation of the coordinate X^ECDHE of the point Q^ECDHE in the little-endian format:¶

  ECDHE = str_{coordinate_length}(X^ECDHE),¶

  where the coordinate_length value is defined by the particular elliptic curve (see Section 6.1.2).¶

##### 6.1.1.3. Public Ephemeral Key Representation

This section defines the representation format of the public ephemeral keys generated during the ECDHE shared secret calculation (see Sections 6.1.1.1 and 6.1.1.2).¶

If the TLS13_GOST profile is used and ECDHE or PSK with ECDHE key exchange mode is used, the public ephemeral key Q indicated in the KeyShareEntry.key_exchange field MUST contain the data defined by the following structure:¶

    struct {
        opaque X[coordinate_length];
        opaque Y[coordinate_length];
    } PlainPointRepresentation;

¶

where X and Y, respectively, contain the byte representations of x and y values of the point Q (Q = (x, y)) in the little-endian format and are specified as follows:¶

- X = str_{coordinate_length}(x);¶
- Y = str_{coordinate_length}(y).¶

The coordinate_length value is defined by the particular elliptic curve (see Section 6.1.2).¶

#### 6.1.2. Values for the TLS Supported Groups Registry

The "supported_groups" extension is used to indicate the set of the elliptic curves supported by an endpoint and is defined in Section 4.2.7 of [RFC8446]. This extension is always contained in the ClientHello message and optionally in the EncryptedExtensions message.¶

This section defines the following seven elliptic curves:¶

    enum {
        GC256A(0x22), GC256B(0x23), GC256C(0x24), GC256D(0x25),
        GC512A(0x26), GC512B(0x27), GC512C(0x28)
    } NamedGroup;

¶

If the TLS13_GOST profile is used and ECDHE or PSK with ECDHE key exchange mode is used, one of the elliptic curves listed above SHOULD be used.¶

Each curve corresponds to the particular identifier and specifies the value of coordinate_length parameter (see "cl" column) as follows:¶

Table 5
Description | Curve Identifier Value | cl | Reference
--- | --- | --- | ---
GC256A | id-tc26-gost-3410-2012-256-paramSetA | 32 | RFC 7836
GC256B | id-GostR3410-2001-CryptoPro-A-ParamSet | 32 | RFC 4357
GC256C | id-GostR3410-2001-CryptoPro-B-ParamSet | 32 | RFC 4357
GC256D | id-GostR3410-2001-CryptoPro-C-ParamSet | 32 | RFC 4357
GC512A | id-tc26-gost-3410-12-512-paramSetA | 64 | RFC 7836
GC512B | id-tc26-gost-3410-12-512-paramSetB | 64 | RFC 7836
GC512C | id-tc26-gost-3410-2012-512-paramSetC | 64 | RFC 7836

Note: The identifier values and the corresponding elliptic curves are the same as in [RFC9189].¶

### 6.2. Authentication

In accordance with [RFC8446], authentication can be performed via a signature with a certificate or via a symmetric PSK. The server side is always authenticated; the client side is optionally authenticated.¶

PSK-based authentication is performed as a side effect of key exchange. If the TLS13_GOST profile is used, external PSKs SHOULD be combined only with mutual authentication (see Section 9).¶

Certificate-based authentication is performed via Authentication messages and an optional CertificateRequest message (sent if client authentication is required). If the TLS13_GOST profile is used, the signature schemes used for certificate-based authentication are defined in Section 5 and Authentication messages are specified in Sections 6.3.3 and 6.3.4. The CertificateRequest message is specified in Section 6.3.2.¶

### 6.3. Handshake Messages

The TLS13_GOST profile specifies the ClientHello, ServerHello, CertificateRequest, Certificate and CertificateVerify handshake messages that are described in further detail below.¶

#### 6.3.1. Hello Messages

The ClientHello message is sent when the client first connects to the server or responds to the HelloRetryRequest message and is specified in accordance with Section 4.1.2 of [RFC8446].¶

If the TLS13_GOST profile is used, the ClientHello message MUST meet the following requirements:¶

- The ClientHello.cipher_suites field MUST contain the values defined in Section 4.¶
- If server authentication via a certificate is required, the extension_data field of the "signature_algorithms" extension MUST contain the values defined in Section 5 that correspond to the GOST R 34.10-2012 signature algorithm.¶
- If server authentication via a certificate is required and the client uses optional "signature_algorithms_cert" extension, the extension_data field of this extension SHOULD contain the values defined in Section 5 that correspond to the GOST R 34.10-2012 signature algorithm.¶
- If the client wants to establish a TLS 1.3 connection using the ECDHE shared secret, the extension_data field of the "supported_groups" extension MUST contain the elliptic curve identifiers defined in Section 6.1.2.¶

The ServerHello message is sent by the server in response to the ClientHello message to negotiate an acceptable set of handshake parameters based on the ClientHello message and is specified in accordance with Section 4.1.3 of [RFC8446].¶

If the TLS13_GOST profile is used, the ServerHello message MUST meet the following requirements:¶

- The ServerHello.cipher_suite field MUST contain one of the values defined in Section 4.¶

- If the server decides to establish a TLS 1.3 connection using the ECDHE shared secret, the extension_data field of the "key_share" extension MUST contain the elliptic curve identifier and the public ephemeral key that satisfy the following conditions:¶

  - The elliptic curve identifier corresponds to the value that was indicated in the "supported_groups" and the "key_share" extensions in the ClientHello message.¶
  - The elliptic curve identifier is one of the values defined in Section 6.1.2.¶
  - The public ephemeral key corresponds to the elliptic curve specified by the KeyShareEntry.group identifier.¶

#### 6.3.2. CertificateRequest

This message is sent when the server requests client authentication via a certificate and is specified in accordance with Section 4.3.2 of [RFC8446].¶

If the TLS13_GOST profile is used, the CertificateRequest message MUST meet the following requirements:¶

- The extension_data field of the "signature_algorithms" extension MUST contain only the values defined in Section 5.¶
- If the server uses optional "signature_algorithms_cert" extension, the extension_data field of this extension SHOULD contain only the values defined in Section 5.¶

#### 6.3.3. Certificate

This message is sent to convey the endpoint's certificate chain to the peer and is specified in accordance with Section 4.4.2 of [RFC8446].¶

If the TLS13_GOST profile is used, the Certificate message MUST meet the following requirements.¶

- Each endpoint's certificate provided to the peer MUST be signed using the algorithm that corresponds to a signature scheme indicated by the peer in its "signature_algorithms_cert" extension, if present (or in the "signature_algorithms" extension, otherwise).¶
- The signature algorithm used for signing certificates SHOULD correspond to one of the signature schemes defined in Section 5.¶

#### 6.3.4. CertificateVerify

This message is sent to provide explicit proof that the endpoint has the private key corresponding to the public key indicated in its certificate and is specified in accordance with Section 4.4.3 of [RFC8446].¶

If the TLS13_GOST profile is used, the CertificateVerify message MUST meet the following requirements:¶

- The CertificateVerify.algorithm field MUST contain the signature scheme identifier that corresponds to the value indicated in the peer's "signature_algorithms" extension and is one of the values defined in Section 5.¶

- The CertificateVerify.signature field contains the sgn value that is computed as follows:¶

  sgn = SIGN(d_sign, M),¶

  where¶

  - the SIGN function is defined in Section 5.3;¶
  - d_sign is the sender's long-term private key that corresponds to the sender's long-term public key Q_sign from the sender's certificate;¶
  - the message M is defined in accordance with Section 4.4.3 of [RFC8446].¶

## 7. IANA Considerations

IANA has added the following values to the "TLS Cipher Suites" registry with a reference to this RFC:¶

Table 6
Value | Description | DTLS-OK | Recommended
--- | --- | --- | ---
0xC1, 0x03 | TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_L | N | N
0xC1, 0x04 | TLS_GOSTR341112_256_WITH_MAGMA_MGM_L | N | N
0xC1, 0x05 | TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_S | N | N
0xC1, 0x06 | TLS_GOSTR341112_256_WITH_MAGMA_MGM_S | N | N

IANA has added the following values to the "TLS SignatureScheme" registry with a reference to this RFC:¶

Table 7
Value | Description | Recommended
--- | --- | ---
0x0709 | gostr34102012_256a | N
0x070A | gostr34102012_256b | N
0x070B | gostr34102012_256c | N
0x070C | gostr34102012_256d | N
0x070D | gostr34102012_512a | N
0x070E | gostr34102012_512b | N
0x070F | gostr34102012_512c | N

## 8. Historical Considerations

In addition to the curve identifier values listed in Table 5, there are some additional identifier values that correspond to the signature schemes for historical reasons. They are as follows:¶

Table 8
Description | Curve Identifier Value
--- | ---
gostr34102012_256b | id-GostR3410-2001-CryptoPro-XchA-ParamSet, id-tc26-gost-3410-2012-256-paramSetB
gostr34102012_256c | id-tc26-gost-3410-2012-256-paramSetC
gostr34102012_256d | id-GostR3410-2001-CryptoPro-XchB-ParamSet, id-tc26-gost-3410-2012-256-paramSetD

The client should be prepared to handle any of them correctly if the corresponding signature scheme is included in the "signature_algorithms" or "signature_algorithms_cert" extensions.¶

## 9. Security Considerations

In order to create an efficient and side-channel resistant implementation while using the TLSTREE algorithm, the functions KDF_j, j = 1, 2, 3, SHOULD be called only when necessary (when the record sequence number seqnum reaches such a value that seqnum & C_j != (seqnum - 1) & C_j). Otherwise, the previous value should be used.¶

## 10. References

### 10.1. Normative References

[RFC2119]
  Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, <https://www.rfc-editor.org/info/rfc2119>.
[RFC6986]
  Dolmatov, V., Ed. and A. Degtyarev, "GOST R 34.11-2012: Hash Function", RFC 6986, DOI 10.17487/RFC6986, August 2013, <https://www.rfc-editor.org/info/rfc6986>.
[RFC7091]
  Dolmatov, V., Ed. and A. Degtyarev, "GOST R 34.10-2012: Digital Signature Algorithm", RFC 7091, DOI 10.17487/RFC7091, December 2013, <https://www.rfc-editor.org/info/rfc7091>.
[RFC7801]
  Dolmatov, V., Ed., "GOST R 34.12-2015: Block Cipher "Kuznyechik"", RFC 7801, DOI 10.17487/RFC7801, March 2016, <https://www.rfc-editor.org/info/rfc7801>.
[RFC7836]
  Smyshlyaev, S., Ed., Alekseev, E., Oshkin, I., Popov, V., Leontiev, S., Podobaev, V., and D. Belyavsky, "Guidelines on the Cryptographic Algorithms to Accompany the Usage of Standards GOST R 34.10-2012 and GOST R 34.11-2012", RFC 7836, DOI 10.17487/RFC7836, March 2016, <https://www.rfc-editor.org/info/rfc7836>.
[RFC8174]
  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017, <https://www.rfc-editor.org/info/rfc8174>.
[RFC8446]
  Rescorla, E., "The Transport Layer Security (TLS) Protocol Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018, <https://www.rfc-editor.org/info/rfc8446>.
[RFC8645]
  Smyshlyaev, S., Ed., "Re-keying Mechanisms for Symmetric Keys", RFC 8645, DOI 10.17487/RFC8645, August 2019, <https://www.rfc-editor.org/info/rfc8645>.
[RFC8891]
  Dolmatov, V., Ed. and D. Baryshkov, "GOST R 34.12-2015: Block Cipher "Magma"", RFC 8891, DOI 10.17487/RFC8891, September 2020, <https://www.rfc-editor.org/info/rfc8891>.
[RFC9058]
  Smyshlyaev, S., Ed., Nozdrunov, V., Shishkin, V., and E. Griboedova, "Multilinear Galois Mode (MGM)", RFC 9058, DOI 10.17487/RFC9058, June 2021, <https://www.rfc-editor.org/info/rfc9058>.
[RFC9189]
  Smyshlyaev, S., Ed., Belyavsky, D., and E. Alekseev, "GOST Cipher Suites for Transport Layer Security (TLS) Protocol Version 1.2", RFC 9189, DOI 10.17487/RFC9189, March 2022, <https://www.rfc-editor.org/info/rfc9189>.

### 10.2. Informative References

[RFC8446BIS]
  Rescorla, E., "The Transport Layer Security (TLS) Protocol Version 1.3", Work in Progress, Internet-Draft, draft-ietf-tls-rfc8446bis-05, 24 October 2022, <https://datatracker.ietf.org/doc/html/draft-ietf-tls-rfc8446bis-05>.

## Appendix A. Test Examples

### A.1. Example 1

#### A.1.1. Test Case

Test examples are given for the following instance of the TLS13_GOST profile:¶

1. Full TLS Handshake is used.¶
2. ECDHE key exchange mode is used. The elliptic curve GC512C is used for ECDHE shared secret calculation.¶
3. Authentication is only used on the server side. The signature scheme gost34102012_256b is used.¶
4. TLS_GOSTR341112_256_WITH_KUZNYECHIK_MGM_S cipher suite is negotiated.¶
5. Application Data is sent by the server prior to receiving the Finished message from the client.¶
6. NewSessionTicket is sent after establishing a secure connection.¶
7. Nine Application Data records are sent during the operation of the Record protocol. The sequence numbers are selected to demonstrate the operation of the TLSTREE function.¶
8. Alert protocol is used for closure of the connection.¶

#### A.1.2. Test Examples

    ---------------------------Client---------------------------

    ClientHello message:
    msg_type:                01
    length:                  0000DE
    body:
      legacy_version:        0303
      random:                03030303030303030303030303030303
                             03030303030303030303030303030303
      legacy_session_id:
        length:              00
        vector:              --
      cipher_suites:
        length:              0002
        vector:
          CipherSuite:       C105
      compression_methods:
        length:              01
        vector:
          CompressionMethod: 00
      extensions:
        length:              00B3
        vector:
          Extension: /* supported_groups */
            extension_type:  000A
            extension_data:
              length:        0004
              vector:
                named_group_list:
                  length:    0002
                  vector:
                   /* GC512C */
                             0028
          Extension: /* signature_algorithms */
            extension_type:  000D
            extension_data:
              length:        0010
              vector:
                supported_signature_algorithms:
                  length:    000E
                  vector:
                   /* gost34102012256a */
                             0709
                   /* gost34102012256b */
                             070A
                   /* gost34102012256c */
                             070B
                   /* gost34102012256d */
                             070C
                   /* gost34102012512a */
                             070D
                   /* gost34102012512b */
                             070E
                   /* gost34102012512c */
                             070F
          Extension: /* supported_versions */
            extension_type:  002B
            extension_data:
              length:        0003
              vector:
                versions:
                  length:    02
                  vector:
                             0304
          Extension: /* psk_key_exchange_modes */
            extension_type:  002D
            extension_data:
              length:        0002
              vector:
                ke_modes:
                  length:    01
                  vector:
                   /* psk_ke */
                             00
          Extension: /* key_share */
            extension_type:  0033
            extension_data:
              length:        0086
              vector:
                length:      0084
                vector:
                  group:     0028
                  key_exchange:
                    length:  0080
                    vector:
                             05EEBDF3DDC1D2F5F3822433241284E7
                             7641487938EA88721F26203E9792B5CB
                             97EB70EF02E8F72B7491D4F2CFDC332A
                             DF7F1778E854A88DDC2113FEC527A151
                             71A04CB0C573793A7AEF9BBCA486B6B0
                             46B2149B46F4332903E5B7C438ADD05E
                             185EFBF45557475A8CCBF6ACED1A2EB4
                             16F916729D7CEF9CBD8334989304AFAE

    0000:   01 00 00 DE 03 03 03 03 03 03 03 03 03 03 03 03
    0010:   03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03
    0020:   03 03 03 03 03 03 00 00 02 C1 05 01 00 00 B3 00
    0030:   0A 00 04 00 02 00 28 00 0D 00 10 00 0E 07 09 07
    0040:   0A 07 0B 07 0C 07 0D 07 0E 07 0F 00 2B 00 03 02
    0050:   03 04 00 2D 00 02 01 00 00 33 00 86 00 84 00 28
    0060:   00 80 05 EE BD F3 DD C1 D2 F5 F3 82 24 33 24 12
    0070:   84 E7 76 41 48 79 38 EA 88 72 1F 26 20 3E 97 92
    0080:   B5 CB 97 EB 70 EF 02 E8 F7 2B 74 91 D4 F2 CF DC
    0090:   33 2A DF 7F 17 78 E8 54 A8 8D DC 21 13 FE C5 27
    00A0:   A1 51 71 A0 4C B0 C5 73 79 3A 7A EF 9B BC A4 86
    00B0:   B6 B0 46 B2 14 9B 46 F4 33 29 03 E5 B7 C4 38 AD
    00C0:   D0 5E 18 5E FB F4 55 57 47 5A 8C CB F6 AC ED 1A
    00D0:   2E B4 16 F9 16 72 9D 7C EF 9C BD 83 34 98 93 04
    00E0:   AF AE

    Record layer message:
    type:                    16
    legacy_record_version:   0301
    length:                  00E2
    fragment:                010000DE030303030303030303030303
                             03030303030303030303030303030303
                             030303030303000002C105010000B300
                             0A000400020028000D0010000E070907
                             0A070B070C070D070E070F002B000302
                             0304002D000201000033008600840028
                             008005EEBDF3DDC1D2F5F38224332412
                             84E77641487938EA88721F26203E9792
                             B5CB97EB70EF02E8F72B7491D4F2CFDC
                             332ADF7F1778E854A88DDC2113FEC527
                             A15171A04CB0C573793A7AEF9BBCA486
                             B6B046B2149B46F4332903E5B7C438AD
                             D05E185EFBF45557475A8CCBF6ACED1A
                             2EB416F916729D7CEF9CBD8334989304
                             AFAE

    00000:   16 03 01 00 E2 01 00 00 DE 03 03 03 03 03 03 03
    00010:   03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03
    00020:   03 03 03 03 03 03 03 03 03 03 03 00 00 02 C1 05
    00030:   01 00 00 B3 00 0A 00 04 00 02 00 28 00 0D 00 10
    00040:   00 0E 07 09 07 0A 07 0B 07 0C 07 0D 07 0E 07 0F
    00050:   00 2B 00 03 02 03 04 00 2D 00 02 01 00 00 33 00
    00060:   86 00 84 00 28 00 80 05 EE BD F3 DD C1 D2 F5 F3
    00070:   82 24 33 24 12 84 E7 76 41 48 79 38 EA 88 72 1F
    00080:   26 20 3E 97 92 B5 CB 97 EB 70 EF 02 E8 F7 2B 74
    00090:   91 D4 F2 CF DC 33 2A DF 7F 17 78 E8 54 A8 8D DC
    000A0:   21 13 FE C5 27 A1 51 71 A0 4C B0 C5 73 79 3A 7A
    000B0:   EF 9B BC A4 86 B6 B0 46 B2 14 9B 46 F4 33 29 03
    000D0:   E5 B7 C4 38 AD D0 5E 18 5E FB F4 55 57 47 5A 8C
    000E0:   CB F6 AC ED 1A 2E B4 16 F9 16 72 9D 7C EF 9C BD
    000F0:   83 34 98 93 04 AF AE

    ---------------------------Server---------------------------

    ServerHello message:
    msg_type:                02
    length:                  0000B6
    body:
      legacy_version:        0303
      random:                83838383838383838383838383838383
                             83838383838383838383838383838383

      legacy_session_id:
        length:              00
        vector:              --
      cipher_suite:
          CipherSuite:       C105
      compression_method:
          CompressionMethod: 00
      extensions:
        length:              008E
        vector:
          Extension: /* supported_versions */
            extension_type:  002B
            extension_data:
              length:        0002
              vector:
                selected_version:
                             0304
          Extension: /* key_share */
            extension_type:  0033
            extension_data:
              length:        0084
              vector:
                group:       0028
                key_exchange:
                  length:    0080
                  vector:
                             2F3C663FE74735A1C421160DF0F43266
                             185FD30B6E5D6E88FC4061FAEACAB338
                             B10A1BD20CB0B4EE757E74A0027D409F
                             E937F01633A1E3F9A5518DEFD0F89F9D
                             3D9F6CC651413DEC2C74366D83C47EE1
                             DE4E421F65CD1163E94EA0C2E19ED45D
                             35558B937D9BFDC5ECC2B2A21B4EC3D5
                             3B29579A8FD5E074811028FBCF17994F

    00000:   02 00 00 B6 03 03 83 83 83 83 83 83 83 83 83 83
    00010:   83 83 83 83 83 83 83 83 83 83 83 83 83 83 83 83
    00020:   83 83 83 83 83 83 00 C1 05 00 00 8E 00 2B 00 02
    00030:   03 04 00 33 00 84 00 28 00 80 2F 3C 66 3F E7 47
    00040:   35 A1 C4 21 16 0D F0 F4 32 66 18 5F D3 0B 6E 5D
    00050:   6E 88 FC 40 61 FA EA CA B3 38 B1 0A 1B D2 0C B0
    00060:   B4 EE 75 7E 74 A0 02 7D 40 9F E9 37 F0 16 33 A1
    00070:   E3 F9 A5 51 8D EF D0 F8 9F 9D 3D 9F 6C C6 51 41
    00080:   3D EC 2C 74 36 6D 83 C4 7E E1 DE 4E 42 1F 65 CD
    00090:   11 63 E9 4E A0 C2 E1 9E D4 5D 35 55 8B 93 7D 9B
    000A0:   FD C5 EC C2 B2 A2 1B 4E C3 D5 3B 29 57 9A 8F D5
    000B0:   E0 74 81 10 28 FB CF 17 99 4F

    Record layer message:
    type:                    16
    legacy_record_version:   0303
    length:                  00BA
    fragment:                020000B6030383838383838383838383
                             83838383838383838383838383838383
                             83838383838300C10500008E002B0002
                             030400330084002800802F3C663FE747
                             35A1C421160DF0F43266185FD30B6E5D
                             6E88FC4061FAEACAB338B10A1BD20CB0
                             B4EE757E74A0027D409FE937F01633A1
                             E3F9A5518DEFD0F89F9D3D9F6CC65141
                             3DEC2C74366D83C47EE1DE4E421F65CD
                             1163E94EA0C2E19ED45D35558B937D9B
                             FDC5ECC2B2A21B4EC3D53B29579A8FD5
                             E074811028FBCF17994F

    00000:   16 03 03 00 BA 02 00 00 B6 03 03 83 83 83 83 83
    00010:   83 83 83 83 83 83 83 83 83 83 83 83 83 83 83 83
    00020:   83 83 83 83 83 83 83 83 83 83 83 00 C1 05 00 00
    00030:   8E 00 2B 00 02 03 04 00 33 00 84 00 28 00 80 2F
    00040:   3C 66 3F E7 47 35 A1 C4 21 16 0D F0 F4 32 66 18
    00050:   5F D3 0B 6E 5D 6E 88 FC 40 61 FA EA CA B3 38 B1
    00060:   0A 1B D2 0C B0 B4 EE 75 7E 74 A0 02 7D 40 9F E9
    00070:   37 F0 16 33 A1 E3 F9 A5 51 8D EF D0 F8 9F 9D 3D
    00080:   9F 6C C6 51 41 3D EC 2C 74 36 6D 83 C4 7E E1 DE
    00090:   4E 42 1F 65 CD 11 63 E9 4E A0 C2 E1 9E D4 5D 35
    000A0:   55 8B 93 7D 9B FD C5 EC C2 B2 A2 1B 4E C3 D5 3B
    000B0:   29 57 9A 8F D5 E0 74 81 10 28 FB CF 17 99 4F

    ---------------------------Client---------------------------

    d_C^res:
    00000:   04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
    00010:   04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
    00020:   04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
    00030:   04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04

    Q_S^res:
    00000:   2F 3C 66 3F E7 47 35 A1 C4 21 16 0D F0 F4 32 66
    00010:   18 5F D3 0B 6E 5D 6E 88 FC 40 61 FA EA CA B3 38
    00020:   B1 0A 1B D2 0C B0 B4 EE 75 7E 74 A0 02 7D 40 9F
    00030:   E9 37 F0 16 33 A1 E3 F9 A5 51 8D EF D0 F8 9F 9D
    00040:   3D 9F 6C C6 51 41 3D EC 2C 74 36 6D 83 C4 7E E1
    00050:   DE 4E 42 1F 65 CD 11 63 E9 4E A0 C2 E1 9E D4 5D
    00060:   35 55 8B 93 7D 9B FD C5 EC C2 B2 A2 1B 4E C3 D5
    00070:   3B 29 57 9A 8F D5 E0 74 81 10 28 FB CF 17 99 4F

    ECDHE:
    00000:   4D E6 0D 21 EA 8F B9 22 0D 14 64 23 B4 90 DA 40
    00010:   CC EB C4 3B C5 89 DB 79 B8 31 A4 7D 6B 06 30 07
    00020:   DD 03 40 5A 1B 79 76 B6 23 DC AA 69 B0 11 AE 10
    00030:   6E 7E 41 74 38 5F 86 26 E1 21 B5 99 43 63 C9 9F

    ---------------------------Server---------------------------

    d_S^res:
    00000:   AA 3C A4 F4 A5 0A C0 5B 37 42 B1 35 B5 30 A9 F2
    00010:   2A E4 F5 E1 85 30 1D EC 83 2E 77 BA 3B CD 6A F1
    00020:   84 84 84 84 84 84 84 84 84 84 84 84 84 84 84 84
    00030:   84 84 84 84 84 84 84 84 84 84 84 84 84 84 84 04

    Q_C^res:
    00000:   05 EE BD F3 DD C1 D2 F5 F3 82 24 33 24 12 84 E7
    00010:   76 41 48 79 38 EA 88 72 1F 26 20 3E 97 92 B5 CB
    00020:   97 EB 70 EF 02 E8 F7 2B 74 91 D4 F2 CF DC 33 2A
    00030:   DF 7F 17 78 E8 54 A8 8D DC 21 13 FE C5 27 A1 51
    00040:   71 A0 4C B0 C5 73 79 3A 7A EF 9B BC A4 86 B6 B0
    00050:   46 B2 14 9B 46 F4 33 29 03 E5 B7 C4 38 AD D0 5E
    00060:   18 5E FB F4 55 57 47 5A 8C CB F6 AC ED 1A 2E B4
    00070:   16 F9 16 72 9D 7C EF 9C BD 83 34 98 93 04 AF AE

    ECDHE:
    00000:   4D E6 0D 21 EA 8F B9 22 0D 14 64 23 B4 90 DA 40
    00010:   CC EB C4 3B C5 89 DB 79 B8 31 A4 7D 6B 06 30 07
    00020:   DD 03 40 5A 1B 79 76 B6 23 DC AA 69 B0 11 AE 10
    00030:   6E 7E 41 74 38 5F 86 26 E1 21 B5 99 43 63 C9 9F

    ---------------------------Server---------------------------

    EncryptedExtensions message:
    msg_type:                08
    length:                  000002
    body:
      extensions:
        length:              0000
        vector:              --

    00000:   08 00 00 02 00 00

    Record payload protection:

      EarlySecret = HKDF-Extract(Salt: 0^256, IKM: 0^256):
      00000:   FB DE FB E5 27 FE EA 66 5A AB 92 77 A2 16 3B 83
      00010:   43 08 4F D1 91 C4 60 66 26 0F AC 6F D1 43 6C 72

      Derived #0 = Derive-Secret(EarlySecret, "derived", "") =
      HKDF-Expand-Label(EarlySecret, "derived", "", 32):
      00000:   DB C3 C8 26 D8 77 A3 B7 D2 D2 45 3D BF DC 6C FB
      00010:   FB 11 51 B3 E8 4F 0C 8F 26 01 1D 8D 5B F3 ED F7

      HandshakeSecret = HKDF-Extract(Salt: Derived #0, IKM: ECDHE):
      00000:   44 24 5E 2C 43 32 D1 F7 8B 0F 8D 16 F4 03 EB 69
      00010:   ED 2A 40 53 84 7C DC 39 FA 8B 3D 29 74 F7 45 E7

      HM1 = (ClientHello, ServerHello)

      TH1 = Transcript-Hash(HM1):
      00000:   99 3B A7 22 12 4A F3 CB FD 47 71 E7 FA E3 2A C1
      00010:   D0 E9 27 8C F7 84 3F CB C6 20 E1 A0 08 5A 87 A1

      server_handshake_traffic_secret (SHTS):
        SHTS = Derive-Secret(HandshakeSecret, "s hs traffic", HM1) =
        HKDF-Expand-Label(HandshakeSecret, "s hs traffic", TH1, 32):
        00000:   70 A5 F2 46 3D F6 0D BA A2 36 8B 67 FD 45 AE FF
        00010:   7C 1A 0B A4 2D 8A BD 72 41 5E CD 1D 94 E9 EF 54

      server_write_key_hs = HKDF-Expand-Label(SHTS, "key", "", 32):
      00000:   E1 37 64 B5 4B 9E 1B 47 D4 33 98 D6 D2 16 DF 24
      00010:   C2 89 A3 96 AB 6C 5B 52 4B BB 9C 06 F3 9F EF 01

      server_write_iv_hs = HKDF-Expand-Label(SHTS, "iv", "", 16):
      00000:   69 69 FF AA A4 52 52 81 EE BB EB 4C BD 0B 64 0E

      server_record_write_key = TLSTREE(server_write_key_hs, 0):
      00000:   56 EE 18 13 72 72 49 C9 DC DF 35 13 78 7E DB 93
      00010:   DF 62 C6 1E E7 B1 26 C5 0F 26 C0 AA AF AE 00 E1

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

      nonce:
      00000:   69 69 FF AA A4 52 52 81 EE BB EB 4C BD 0B 64 0E

      additional_data:
      00000:   17 03 03 00 17

      TLSInnerPlaintext:
      00000:   08 00 00 02 00 00 16

      TLSCiphertext:
      00000:   17 03 03 00 17 94 0E 5D 2C 75 3A E5 FE BD 20 01
      00010:   2C C9 E3 EB 24 A3 79 84 1E 02 AB BE

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0017
    encrypted_record:        940E5D2C753AE5FEBD20012CC9E3EB24
                             A379841E02ABBE

    00000:   17 03 03 00 17 94 0E 5D 2C 75 3A E5 FE BD 20 01
    00010:   2C C9 E3 EB 24 A3 79 84 1E 02 AB BE

    ---------------------------Server---------------------------

    Certificate message:
    msg_type:                0B
    length:                  000151
    body:
      certificate_request_context:
        length:              00
        vector:              --
      certificate_list:
        length:              00014D
        vector:
          ASN.1Cert:
            length:          000148
            vector:          308201443081F2A00302010202023039
                             300A06082A85030701010302301B3119
                             301706035504031310676F73742E6578
                             616D706C652E636F6D301E170D323030
                             3232383131303833375A170D33303032
                             32353131303833375A301B3119301706
                             035504031310676F73742E6578616D70
                             6C652E636F6D305E301706082A850307
                             01010101300B06092A85030701020101
                             020343000440F383CEE83048B4EB14C7
                             1A7F6DE44A37CE11A6AC1750F1CFB8DA
                             D8A38CCDD8FD06656F7CFC075F4083C3
                             716221478F1EE24C6B1B70CCE3C72AFD
                             2ACE65C775BCA321301F301D0603551D
                             0E04160414F330FA7166DF095AF3A073
                             BC3B8EA356D7DFAC71300A06082A8503
                             0701010302034100AB2EDA23F49B4862
                             3B0CFF5906B7DD3C23B473570B296A08
                             71DD15EF9A33201B97904A5CFA6C931C
                             5473DC0C5A5F2FBB2E50CF587AE27C4D
                             8E52EB80189DD08B
              extensions:
                length:      0000
                vector:      --

    00000:   0B 00 01 51 00 00 01 4D 00 01 48 30 82 01 44 30
    00010:   81 F2 A0 03 02 01 02 02 02 30 39 30 0A 06 08 2A
    00020:   85 03 07 01 01 03 02 30 1B 31 19 30 17 06 03 55
    00030:   04 03 13 10 67 6F 73 74 2E 65 78 61 6D 70 6C 65
    00040:   2E 63 6F 6D 30 1E 17 0D 32 30 30 32 32 38 31 31
    00050:   30 38 33 37 5A 17 0D 33 30 30 32 32 35 31 31 30
    00060:   38 33 37 5A 30 1B 31 19 30 17 06 03 55 04 03 13
    00070:   10 67 6F 73 74 2E 65 78 61 6D 70 6C 65 2E 63 6F
    00080:   6D 30 5E 30 17 06 08 2A 85 03 07 01 01 01 01 30
    00090:   0B 06 09 2A 85 03 07 01 02 01 01 02 03 43 00 04
    000A0:   40 F3 83 CE E8 30 48 B4 EB 14 C7 1A 7F 6D E4 4A
    000B0:   37 CE 11 A6 AC 17 50 F1 CF B8 DA D8 A3 8C CD D8
    000C0:   FD 06 65 6F 7C FC 07 5F 40 83 C3 71 62 21 47 8F
    000D0:   1E E2 4C 6B 1B 70 CC E3 C7 2A FD 2A CE 65 C7 75
    000E0:   BC A3 21 30 1F 30 1D 06 03 55 1D 0E 04 16 04 14
    000F0:   F3 30 FA 71 66 DF 09 5A F3 A0 73 BC 3B 8E A3 56
    00100:   D7 DF AC 71 30 0A 06 08 2A 85 03 07 01 01 03 02
    00110:   03 41 00 AB 2E DA 23 F4 9B 48 62 3B 0C FF 59 06
    00120:   B7 DD 3C 23 B4 73 57 0B 29 6A 08 71 DD 15 EF 9A
    00130:   33 20 1B 97 90 4A 5C FA 6C 93 1C 54 73 DC 0C 5A
    00140:   5F 2F BB 2E 50 CF 58 7A E2 7C 4D 8E 52 EB 80 18
    00150:   9D D0 8B 00 00

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_hs, 1):
      00000:   56 EE 18 13 72 72 49 C9 DC DF 35 13 78 7E DB 93
      00010:   DF 62 C6 1E E7 B1 26 C5 0F 26 C0 AA AF AE 00 E1

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01

      nonce:
      00000:   69 69 FF AA A4 52 52 81 EE BB EB 4C BD 0B 64 0F

      additional_data:
      00000:   17 03 03 01 66

      TLSInnerPlaintext:
      00000:   0B 00 01 51 00 00 01 4D 00 01 48 30 82 01 44 30
      00010:   81 F2 A0 03 02 01 02 02 02 30 39 30 0A 06 08 2A
      00020:   85 03 07 01 01 03 02 30 1B 31 19 30 17 06 03 55
      00030:   04 03 13 10 67 6F 73 74 2E 65 78 61 6D 70 6C 65
      00040:   2E 63 6F 6D 30 1E 17 0D 32 30 30 32 32 38 31 31
      00050:   30 38 33 37 5A 17 0D 33 30 30 32 32 35 31 31 30
      00060:   38 33 37 5A 30 1B 31 19 30 17 06 03 55 04 03 13
      00070:   10 67 6F 73 74 2E 65 78 61 6D 70 6C 65 2E 63 6F
      00080:   6D 30 5E 30 17 06 08 2A 85 03 07 01 01 01 01 30
      00090:   0B 06 09 2A 85 03 07 01 02 01 01 02 03 43 00 04
      000A0:   40 F3 83 CE E8 30 48 B4 EB 14 C7 1A 7F 6D E4 4A
      000B0:   37 CE 11 A6 AC 17 50 F1 CF B8 DA D8 A3 8C CD D8
      000C0:   FD 06 65 6F 7C FC 07 5F 40 83 C3 71 62 21 47 8F
      000D0:   1E E2 4C 6B 1B 70 CC E3 C7 2A FD 2A CE 65 C7 75
      000E0:   BC A3 21 30 1F 30 1D 06 03 55 1D 0E 04 16 04 14
      000F0:   F3 30 FA 71 66 DF 09 5A F3 A0 73 BC 3B 8E A3 56
      00100:   D7 DF AC 71 30 0A 06 08 2A 85 03 07 01 01 03 02
      00110:   03 41 00 AB 2E DA 23 F4 9B 48 62 3B 0C FF 59 06
      00120:   B7 DD 3C 23 B4 73 57 0B 29 6A 08 71 DD 15 EF 9A
      00130:   33 20 1B 97 90 4A 5C FA 6C 93 1C 54 73 DC 0C 5A
      00140:   5F 2F BB 2E 50 CF 58 7A E2 7C 4D 8E 52 EB 80 18
      00150:   9D D0 8B 00 00 16

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0166
    encrypted_record:        F57944FE9A599A76E7FE9C26E3FCE5BB
                             AC4DDCF68EF2E77624E33E80B6743E39
                             10502EE419A219B3BB6A1712D15458BB
                             897D3DAC7A48769945C89237DFB86620
                             CC31C456B4374B075905E42AB5333742
                             3463819982DC6D76A067C4FD83BD3E47
                             9CD9B7FD2926A5A63B1E88B1525DB976
                             C7F409190F955AE9F0AC5F976A471F23
                             675DEB9B24E162D24F494ECDC483A070
                             7129F3BD17D0FAC4944F2B3BF140D616
                             D654709297495B23898893B211505856
                             EEC1A96BC4DCF78A016798E5500D662C
                             54A74BDF6A7F300AC9B72299B4F15F6F
                             449F396CE1D0C9243CBC1C86BECD5CAB
                             BFDF50197B7AFF4BE903D7E3311B729B
                             C32D09D2D0DCE06622985AE037DC2F87
                             CB0C492F2D5106B259CC86E227CC8338
                             C1DF6C63576B17DB9655FD255F156E1F
                             4F767FAFB74471731E4225256818DE94
                             64218263D7CF7B87EB5222E76DE6C951
                             E462CCCCC53E06387BB4FEDEFD34B9C1
                             3AB4EE3D49057CD2672F852A5F692408
                             29B92341CDC9

    TLSCiphertext:
      00000:   17 03 03 01 66 F5 79 44 FE 9A 59 9A 76 E7 FE 9C
      00010:   26 E3 FC E5 BB AC 4D DC F6 8E F2 E7 76 24 E3 3E
      00020:   80 B6 74 3E 39 10 50 2E E4 19 A2 19 B3 BB 6A 17
      00030:   12 D1 54 58 BB 89 7D 3D AC 7A 48 76 99 45 C8 92
      00040:   37 DF B8 66 20 CC 31 C4 56 B4 37 4B 07 59 05 E4
      00050:   2A B5 33 37 42 34 63 81 99 82 DC 6D 76 A0 67 C4
      00060:   FD 83 BD 3E 47 9C D9 B7 FD 29 26 A5 A6 3B 1E 88
      00070:   B1 52 5D B9 76 C7 F4 09 19 0F 95 5A E9 F0 AC 5F
      00080:   97 6A 47 1F 23 67 5D EB 9B 24 E1 62 D2 4F 49 4E
      00090:   CD C4 83 A0 70 71 29 F3 BD 17 D0 FA C4 94 4F 2B
      000A0:   3B F1 40 D6 16 D6 54 70 92 97 49 5B 23 89 88 93
      000B0:   B2 11 50 58 56 EE C1 A9 6B C4 DC F7 8A 01 67 98
      000C0:   E5 50 0D 66 2C 54 A7 4B DF 6A 7F 30 0A C9 B7 22
      000D0:   99 B4 F1 5F 6F 44 9F 39 6C E1 D0 C9 24 3C BC 1C
      000E0:   86 BE CD 5C AB BF DF 50 19 7B 7A FF 4B E9 03 D7
      000F0:   E3 31 1B 72 9B C3 2D 09 D2 D0 DC E0 66 22 98 5A
      00100:   E0 37 DC 2F 87 CB 0C 49 2F 2D 51 06 B2 59 CC 86
      00110:   E2 27 CC 83 38 C1 DF 6C 63 57 6B 17 DB 96 55 FD
      00120:   25 5F 15 6E 1F 4F 76 7F AF B7 44 71 73 1E 42 25
      00130:   25 68 18 DE 94 64 21 82 63 D7 CF 7B 87 EB 52 22
      00140:   E7 6D E6 C9 51 E4 62 CC CC C5 3E 06 38 7B B4 FE
      00150:   DE FD 34 B9 C1 3A B4 EE 3D 49 05 7C D2 67 2F 85
      00160:   2A 5F 69 24 08 29 B9 23 41 CD C9

    ---------------------------Server---------------------------

    HMCertificateVerify = (ClientHello, ServerHello,
      EncryptedExtensions, Certificate)

    Transcript-Hash(HMCertificateVerify):
      00000:   E0 CC 4B C1 4B EC 5D 13 19 2C DC 66 22 B4 FD A9
      00010:   67 6A 1B 50 E4 56 83 0B B5 F0 7E 01 21 22 73 06

    k (random for signature algorithm):
      00000:   85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85
      00010:   85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85

    sgn:
      00000:   A0 AA 13 91 5C 5B 80 C6 02 E2 FD 85 80 4F 99 2C
      00010:   77 15 97 AD 37 85 7A D6 BC 2A 9D 7B C5 FE BE C3
      00020:   7C 72 94 BA A2 3C F6 9D 03 E4 71 0B D7 08 13 FD
      00030:   AC 59 6B C1 58 E7 56 BD 37 1C 44 2E 95 22 DE 87

    CertificateVerify message:
    msg_type:                0F
    length:                  000044
    body:
      algorithm:             070A
      signature:
        length:              0040
        vector:
                             A0AA13915C5B80C602E2FD85804F992C
                             771597AD37857AD6BC2A9D7BC5FEBEC3
                             7C7294BAA23CF69D03E4710BD70813FD
                             AC596BC158E756BD371C442E9522DE87

    00000:   0F 00 00 44 07 0A 00 40 A0 AA 13 91 5C 5B 80 C6
    00010:   02 E2 FD 85 80 4F 99 2C 77 15 97 AD 37 85 7A D6
    00020:   BC 2A 9D 7B C5 FE BE C3 7C 72 94 BA A2 3C F6 9D
    00030:   03 E4 71 0B D7 08 13 FD AC 59 6B C1 58 E7 56 BD
    00040:   37 1C 44 2E 95 22 DE 87

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_hs, 2):
      00000:   56 EE 18 13 72 72 49 C9 DC DF 35 13 78 7E DB 93
      00010:   DF 62 C6 1E E7 B1 26 C5 0F 26 C0 AA AF AE 00 E1

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02

      nonce:
      00000:   69 69 FF AA A4 52 52 81 EE BB EB 4C BD 0B 64 0C

      additional_data:
      00000:   17 03 03 00 59

      TLSInnerPlaintext:
      00000:   0F 00 00 44 07 0A 00 40 A0 AA 13 91 5C 5B 80 C6
      00010:   02 E2 FD 85 80 4F 99 2C 77 15 97 AD 37 85 7A D6
      00020:   BC 2A 9D 7B C5 FE BE C3 7C 72 94 BA A2 3C F6 9D
      00030:   03 E4 71 0B D7 08 13 FD AC 59 6B C1 58 E7 56 BD
      00040:   37 1C 44 2E 95 22 DE 87 16

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0059
    encrypted_record:        52631D5BFDF48254BDFB5F9E02A6A527
                             0163BCE1E0D818E8D74176535C6CDD25
                             2DE065AE77984A65ADBA036D59CF45B9
                             A0047BABCCD0B28044D34BCFD09E6E46
                             27044B26FE5CA734FCB08607146F41A8
                             71C3F95384B48ADABC

    TLSCiphertext:
      00000:   17 03 03 00 59 52 63 1D 5B FD F4 82 54 BD FB 5F
      00010:   9E 02 A6 A5 27 01 63 BC E1 E0 D8 18 E8 D7 41 76
      00020:   53 5C 6C DD 25 2D E0 65 AE 77 98 4A 65 AD BA 03
      00030:   6D 59 CF 45 B9 A0 04 7B AB CC D0 B2 80 44 D3 4B
      00040:   CF D0 9E 6E 46 27 04 4B 26 FE 5C A7 34 FC B0 86
      00050:   07 14 6F 41 A8 71 C3 F9 53 84 B4 8A DA BC

    ---------------------------Server---------------------------

    server_finished_key = HKDF-Expand-Label(SHTS, "finished", "", 32):
    00000:   53 F1 C0 38 8F 8A 70 C0 BC A0 DD 21 A0 30 F2 38
    00010:   1C 34 37 CD 0E 7E C9 3D 0A 96 5E 25 63 2D D7 9A

    HMFinished = (ClientHello, ServerHello, EncryptedExtensions
      Certificate, CertificateVerify)

    Transcript-Hash(HMFinished):
    00000:   03 EC 9B 1D 0B 37 41 42 45 72 BA C9 DF 3A A5 2C
    00010:   03 EF E9 E9 58 07 69 43 AF D8 58 19 BC 60 2F 46

    FinishedHash =
    HMAC(server_finished_key,Transcript-Hash(HMFinished)):
    00000:   E0 BA A3 36 14 E0 69 69 7E 4D FA B0 71 B9 72 57
    00010:   73 F8 FE 1A 32 6A 66 2D 0F 52 30 9B 45 B6 E0 31

    Finished message:
    msg_type:                14
    length:                  000020
    body:
      verify_data:           E0BAA33614E069697E4DFAB071B97257
                             73F8FE1A326A662D0F52309B45B6E031

    00000:   14 00 00 20 E0 BA A3 36 14 E0 69 69 7E 4D FA B0
    00010:   71 B9 72 57 73 F8 FE 1A 32 6A 66 2D 0F 52 30 9B
    00020:   45 B6 E0 31

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_hs, 3):
      00000:   56 EE 18 13 72 72 49 C9 DC DF 35 13 78 7E DB 93
      00010:   DF 62 C6 1E E7 B1 26 C5 0F 26 C0 AA AF AE 00 E1

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03

      nonce:
      00000:   69 69 FF AA A4 52 52 81 EE BB EB 4C BD 0B 64 0D

      additional_data:
      00000:   17 03 03 00 35

      TLSInnerPlaintext:
      00000:   14 00 00 20 E0 BA A3 36 14 E0 69 69 7E 4D FA B0
      00010:   71 B9 72 57 73 F8 FE 1A 32 6A 66 2D 0F 52 30 9B
      00020:   45 B6 E0 31 16

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0035
    encrypted_record:        57B1706C4918F67EACCA457F7D5B537C
                             CE5036B4004C778022B97EE802320398
                             119404506680ADD7D6A6CD7C8153B755
                             3C6E646AD6

    TLSCiphertext:
      00000:   17 03 03 00 35 57 B1 70 6C 49 18 F6 7E AC CA 45
      00010:   7F 7D 5B 53 7C CE 50 36 B4 00 4C 77 80 22 B9 7E
      00020:   E8 02 32 03 98 11 94 04 50 66 80 AD D7 D6 A6 CD
      00030:   7C 81 53 B7 55 3C 6E 64 6A D6

    ---------------------------Server---------------------------
    Application Data:
      HELO gost.example.com\r\n

    Record payload protection:

      Derived #1 = Derive-Secret(HandshakeSecret, "derived", "") =
        HKDF-Expand-Label(HandshakeSecret, "derived", "", 32):
        00000:   EA 3C 54 BB D1 4E F9 D7 50 77 6F AB E3 95 BE 2A
        00010:   BD DB BB B7 1C 13 C2 BD 60 9E 35 15 79 4A FA 02

      MainSecret = HKDF-Extract(Salt: Derived #1, IKM: 0^256):
      00000:   31 BB 1D 61 2C CD 53 32 68 8A 55 1A 48 CA 25 0F
      00010:   24 78 3D 4A B0 B4 A7 6D 3F E5 06 7A 26 16 A4 A3

      HM2 = (ClientHello, ServerHello, EncryptedExtensions, Certificate,
       CertificateVerify, Server Finished)

      TH2 = Transcript-Hash(HM2):
      00000:   9E BC 5F BE 32 D9 F4 0D 48 F8 EE CE BB 62 31 A5
      00010:   33 C2 C0 EF 24 32 77 B9 6D 6F 7A D3 BB FD 14 94

      server_application_traffic_secret (SATS):
      SATS = Derive-Secret(MainSecret, "s ap traffic", HM2) =
        HKDF-Expand-Label(MainSecret, "s ap traffic", TH2, 32):
        00000:   87 73 4F 4B 4C FD 17 B9 7B 83 4D 82 2D 9D 73 79
        00010:   F6 F5 E0 3B 80 B5 2A EB 2A FF 51 0E DD 83 DB D2

      server_write_key_ap = HKDF-Expand-Label(SATS, "key", "", 32):
      00000:   47 5E 4C 51 4C C6 31 8C 3A 5F 00 0F 12 65 BD 1A
      00010:   B5 F0 DE 1A F3 57 ED 00 79 EC 5F F0 AF BD 03 0C

      server_write_iv_ap = HKDF-Expand-Label(SATS, "iv", "", 16):
      00000:   AF E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 B8

      server_record_write_key = TLSTREE(server_write_key_ap, 0):
      00000:   C8 FC 93 D7 C5 86 F2 B0 A3 10 1B AA 6A 97 9E 4E
      00010:   38 86 70 65 51 E8 11 87 E9 78 80 40 9C 7E 8E E9

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

      nonce:
      00000:   2F E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 B8

      additional_data:
      00000:   17 03 03 00 28

      TLSInnerPlaintext:
      00000:   48 45 4C 4F 20 67 6F 73 74 2E 65 78 61 6D 70 6C
      00010:   65 2E 63 6F 6D 0D 0A 17

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0028
    encrypted_record:        ABB8C372C79681DCE5C3C909DD039D59
                             8161FD3E6CE5D6F9CA5715BD6B5C1824
                             7FB26AC1AB396A4E

    TLSCiphertext:
      00000:   17 03 03 00 28 AB B8 C3 72 C7 96 81 DC E5 C3 C9
      00010:   09 DD 03 9D 59 81 61 FD 3E 6C E5 D6 F9 CA 57 15
      00020:   BD 6B 5C 18 24 7F B2 6A C1 AB 39 6A 4E

    ---------------------------Client---------------------------

    client_finished_key = HKDF-Expand-Label(CHTS, "finished", "", 32):
    00000:   2F 21 54 8C F5 27 78 69 AE 49 0D E7 BC 15 AC E6
    00010:   39 F6 57 E3 58 2A 5A 63 4B 0A 91 56 95 D5 4C 42

    HM2 = (ClientHello, ServerHello, EncryptedExtensions, Certificate,
      CertificateVerify, Server Finished)

    TH2 = Transcript-Hash(HM2):
    00000:   9E BC 5F BE 32 D9 F4 0D 48 F8 EE CE BB 62 31 A5
    00010:   33 C2 C0 EF 24 32 77 B9 6D 6F 7A D3 BB FD 14 94

    FinishedHash =
    HMAC(client_finished_key, TH2):
    00000:   08 5F C7 FD 79 B6 D1 11 CD 8D 3F F6 B2 3A 06 5A
    00010:   7A F7 A6 38 73 42 A5 F3 57 68 14 CD 00 47 19 D2

    Finished message:
    msg_type:                14
    length:                  000020
    body:
      verify_data:           085FC7FD79B6D111CD8D3FF6B23A065A
                             7AF7A6387342A5F3576814CD004719D2

    00000:   14 00 00 20 08 5F C7 FD 79 B6 D1 11 CD 8D 3F F6
    00010:   B2 3A 06 5A 7A F7 A6 38 73 42 A5 F3 57 68 14 CD
    00020:   00 47 19 D2

    Record payload protection:

      EarlySecret = HKDF-Extract(Salt: 0^256, IKM: 0^256):
      00000:   FB DE FB E5 27 FE EA 66 5A AB 92 77 A2 16 3B 83
      00010:   43 08 4F D1 91 C4 60 66 26 0F AC 6F D1 43 6C 72

      Derived #0 = Derive-Secret(EarlySecret, "derived", "") =
      HKDF-Expand-Label(EarlySecret, "derived", "", 32):
      00000:   DB C3 C8 26 D8 77 A3 B7 D2 D2 45 3D BF DC 6C FB
      00010:   FB 11 51 B3 E8 4F 0C 8F 26 01 1D 8D 5B F3 ED F7

      HandshakeSecret = HKDF-Extract(Salt: Derived #0, IKM: ECDHE):
      00000:   44 24 5E 2C 43 32 D1 F7 8B 0F 8D 16 F4 03 EB 69
      00010:   ED 2A 40 53 84 7C DC 39 FA 8B 3D 29 74 F7 45 E7

      HM1 = (ClientHello, ServerHello)

      TH1 = Transcript-Hash(HM1):
      00000:   99 3B A7 22 12 4A F3 CB FD 47 71 E7 FA E3 2A C1
      00010:   D0 E9 27 8C F7 84 3F CB C6 20 E1 A0 08 5A 87 A1

      client_handshake_traffic_secret (CHTS):
        CHTS = Derive-Secret(HandshakeSecret, "c hs traffic", HM1) =
        HKDF-Expand-Label(HandshakeSecret, "c hs traffic", TH1, 32):
        00000:   B3 F7 11 3D 35 26 55 4F E6 55 E5 6F AB 79 B1 A0
        00010:   3D E3 35 96 E3 30 88 C7 78 37 19 A9 A4 B0 DC CD

      client_write_key_hs = HKDF-Expand-Label(CHTS, "key", "", 32):
      00000:   58 16 88 D7 6E FE 12 2B B5 5F 62 B3 8E F0 1B CC
      00010:   8C 88 DB 83 E9 EA 4D 55 D3 89 8C 53 72 1F C3 84

      client_write_iv_hs = HKDF-Expand-Label(CHTS, "iv", "", 16):
      00000:   43 9A 07 45 3D 0B EA 0C 1D 1B EB 73 8E B5 B8 DD

      client_record_write_key = TLSTREE(client_write_key_hs, 0):
      00000:   E1 C5 9B 41 69 D8 96 10 7F 78 45 68 93 A3 75 1E
      00010:   15 73 54 3D AD 8C B7 40 69 E6 81 4A 51 3B BB 1C

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

      nonce:
      00000:   43 9A 07 45 3D 0B EA 0C 1D 1B EB 73 8E B5 B8 DD

      additional_data:
      00000:   17 03 03 00 35

      TLSInnerPlaintext:
      00000:   14 00 00 20 08 5F C7 FD 79 B6 D1 11 CD 8D 3F F6
      00010:   B2 3A 06 5A 7A F7 A6 38 73 42 A5 F3 57 68 14 CD
      00020:   00 47 19 D2 16

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0035
    encrypted_record:        C9C65EAAB4A80E04849A122EB0CC26A9
                             CA6B5DD4DB7AD6813949F629FC09E052
                             2FF7ACDBBA93926C20008B8CCE865422
                             7B31D439F8

    TLSCiphertext:
      00000:   17 03 03 00 35 C9 C6 5E AA B4 A8 0E 04 84 9A 12
      00010:   2E B0 CC 26 A9 CA 6B 5D D4 DB 7A D6 81 39 49 F6
      00020:   29 FC 09 E0 52 2F F7 AC DB BA 93 92 6C 20 00 8B
      00030:   8C CE 86 54 22 7B 31 D4 39 F8

    ---------------------------Server---------------------------

    NewSessionTicket message:
    msg_type:                04
    length:                  000035
    body:
      ticket_lifetime:       00093A80
      ticket_age_add:        86868686
      ticket_nonce:
        length:              08
        vector:              0000000000000000
      ticket:
        length:              0020
        vector:              88888888888888888888888888888888
                             88888888888888888888888888888888
      extensions:
        length:              0000
        vector:              --

    00000:   04 00 00 35 00 09 3A 80 86 86 86 86 08 00 00 00
    00010:   00 00 00 00 00 00 20 88 88 88 88 88 88 88 88 88
    00020:   88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88
    00030:   88 88 88 88 88 88 88 00 00

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 1):
      00000:   C8 FC 93 D7 C5 86 F2 B0 A3 10 1B AA 6A 97 9E 4E
      00010:   38 86 70 65 51 E8 11 87 E9 78 80 40 9C 7E 8E E9

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01

      nonce:
      00000:   2F E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 B9

      additional_data:
      00000:   17 03 03 00 4A

      TLSInnerPlaintext:
      00000:   04 00 00 35 00 09 3A 80 86 86 86 86 08 00 00 00
      00010:   00 00 00 00 00 00 20 88 88 88 88 88 88 88 88 88
      00020:   88 88 88 88 88 88 88 88 88 88 88 88 88 88 88 88
      00030:   88 88 88 88 88 88 88 00 00 16

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  004A
    encrypted_record:        CA6688A5DC22208DC8A8DE7E597292E3
                             CB5D454945B8F06C7C50F1823D7B6BB0
                             021178AE3ADB2DE3994539FD696945CF
                             AA6919F3F1294CD41ED2A8EA75302869
                             ACB994F3920B09D67186

    TLSCiphertext:
      00000:   17 03 03 00 4A CA 66 88 A5 DC 22 20 8D C8 A8 DE
      00010:   7E 59 72 92 E3 CB 5D 45 49 45 B8 F0 6C 7C 50 F1
      00020:   82 3D 7B 6B B0 02 11 78 AE 3A DB 2D E3 99 45 39
      00030:   FD 69 69 45 CF AA 69 19 F3 F1 29 4C D4 1E D2 A8
      00040:   EA 75 30 28 69 AC B9 94 F3 92 0B 09 D6 71 86

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 2):
      00000:   C8 FC 93 D7 C5 86 F2 B0 A3 10 1B AA 6A 97 9E 4E
      00010:   38 86 70 65 51 E8 11 87 E9 78 80 40 9C 7E 8E E9

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02

      nonce:
      00000:   2F E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 BA

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        9B3AD6939F05A403EEB1A636E13989D9
                             1CCA6A45BE5B7CB5C980020627A1B2AD
                             34AC4B5AAE5BD445C91C28325E4C7149
                             188D55EF27016D80AF440704820BCE22
                             CE501EA619A4FF7CD9F722A28391CE8B
                             B86BF87D5A85555BEF59A9C9A1572F38
                             114E64FD04A0DB2E1787A585EA51DCAB
                             B95DAFB73D0B3FE3F0702C5E1AA01571
                             17D884783E5E6113F6CA8352F6CF49F9
                             DB3B3DAB380BFD7BE04B0A  [...]
                             64E7027D926E0F95AB7F133B5921F996
                             A81EB67B78449DD32F4511E013206524
                             AD4AFACF0B1C1622282CB20A965E670C
                             C9A17E13F343AF3825AFD58B06915BDC
                             9E49477F02830694F5AC7CC99C887F62
                             CDAAEF0053766FB12BC9A082C157C347
                             21C5400C376088A660EE4329ED645D7C
                             07D4DA1ABDF6F9A1B9D51BF3E09CFCC1
                             A59CD96F07FC9ACF004EA1B20E6BBDAD
                             7BBF0C9E2A1B

    TLSCiphertext:
      00000000:   17 03 03 40 11 9B 3A D6 93 9F 05 A4 03 EE B1 A6
      00000010:   36 E1 39 89 D9 1C CA 6A 45 BE 5B 7C B5 C9 80 02
      00000020:   06 27 A1 B2 AD 34 AC 4B 5A AE 5B D4 45 C9 1C 28
      00000030:   32 5E 4C 71 49 18 8D 55 EF 27 01 6D 80 AF 44 07
      00000040:   04 82 0B CE 22 CE 50 1E A6 19 A4 FF 7C D9 F7 22
      00000050:   A2 83 91 CE 8B B8 6B F8 7D 5A 85 55 5B EF 59 A9
      00000060:   C9 A1 57 2F 38 11 4E 64 FD 04 A0 DB 2E 17 87 A5
      00000070:   85 EA 51 DC AB B9 5D AF B7 3D 0B 3F E3 F0 70 2C
      00000080:   5E 1A A0 15 71 17 D8 84 78 3E 5E 61 13 F6 CA 83
      00000090:   52 F6 CF 49 F9 DB 3B 3D AB 38 0B FD 7B E0 4B 0A
      [...]
      00003F80:   64 E7 02 7D 92 6E 0F 95 AB 7F 13 3B 59 21 F9 96
      00003F90:   A8 1E B6 7B 78 44 9D D3 2F 45 11 E0 13 20 65 24
      00003FA0:   AD 4A FA CF 0B 1C 16 22 28 2C B2 0A 96 5E 67 0C
      00003FB0:   C9 A1 7E 13 F3 43 AF 38 25 AF D5 8B 06 91 5B DC
      00003FC0:   9E 49 47 7F 02 83 06 94 F5 AC 7C C9 9C 88 7F 62
      00003FD0:   CD AA EF 00 53 76 6F B1 2B C9 A0 82 C1 57 C3 47
      00003FE0:   21 C5 40 0C 37 60 88 A6 60 EE 43 29 ED 64 5D 7C
      00003FF0:   07 D4 DA 1A BD F6 F9 A1 B9 D5 1B F3 E0 9C FC C1
      00004000:   A5 9C D9 6F 07 FC 9A CF 00 4E A1 B2 0E 6B BD AD
      00004010:   7B BF 0C 9E 2A 1B

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 3):
      00000:   C8 FC 93 D7 C5 86 F2 B0 A3 10 1B AA 6A 97 9E 4E
      00010:   38 86 70 65 51 E8 11 87 E9 78 80 40 9C 7E 8E E9

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03

      nonce:
      00000:   2F E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 BB

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        F06C5032F8A7AD58CED14D5383ED969E
                             628DE4F35CF9B6FCF5047D9B02261F56
                             F724DE961F8FF9C27AE76FBAC0A18E96
                             AA30CA7D8EBAD5B5135A0962515CC4F2
                             A16EBAB9A08886ED4EFD9DFAEC158F94
                             EFB0F90725C9114D9D8D904A18ABF184
                             E74B07150B2F2F27CB8032064943C957
                             11E480E4F4FCE8E9F020D5C90489E734
                             AEA10D91C7097AEC8CD6D5E3EEC764B0
                             CD447FC07735F0F8D9D490  [...]
                             3A79E7B3BCFD2B2478092911073A7CC9
                             6AC626C30DD0A5612DBBFF26E35AF0BB
                             5CEC24EED391100533FB999D4873ED5D
                             5E4693C5EEDC3ECC3C6EFF041B0A7F42
                             25A1092F4AADD9A508C7A56CB13A3F33
                             E844E28C8ADCD45250F4EE29834C5CAA
                             C50B5EBF94501785664E78AE9B5FDBFA
                             DF730DED97985D659135F5DABAD883FF
                             AC6046A0F629881F76147646D8E2A867
                             3B14295621F7

    TLSCiphertext:
      00000000:   17 03 03 40 11 F0 6C 50 32 F8 A7 AD 58 CE D1 4D
      00000010:   53 83 ED 96 9E 62 8D E4 F3 5C F9 B6 FC F5 04 7D
      00000020:   9B 02 26 1F 56 F7 24 DE 96 1F 8F F9 C2 7A E7 6F
      00000030:   BA C0 A1 8E 96 AA 30 CA 7D 8E BA D5 B5 13 5A 09
      00000040:   62 51 5C C4 F2 A1 6E BA B9 A0 88 86 ED 4E FD 9D
      00000050:   FA EC 15 8F 94 EF B0 F9 07 25 C9 11 4D 9D 8D 90
      00000060:   4A 18 AB F1 84 E7 4B 07 15 0B 2F 2F 27 CB 80 32
      00000070:   06 49 43 C9 57 11 E4 80 E4 F4 FC E8 E9 F0 20 D5
      00000080:   C9 04 89 E7 34 AE A1 0D 91 C7 09 7A EC 8C D6 D5
      00000090:   E3 EE C7 64 B0 CD 44 7F C0 77 35 F0 F8 D9 D4 90
      [...]
      00003F80:   3A 79 E7 B3 BC FD 2B 24 78 09 29 11 07 3A 7C C9
      00003F90:   6A C6 26 C3 0D D0 A5 61 2D BB FF 26 E3 5A F0 BB
      00003FA0:   5C EC 24 EE D3 91 10 05 33 FB 99 9D 48 73 ED 5D
      00003FB0:   5E 46 93 C5 EE DC 3E CC 3C 6E FF 04 1B 0A 7F 42
      00003FC0:   25 A1 09 2F 4A AD D9 A5 08 C7 A5 6C B1 3A 3F 33
      00003FD0:   E8 44 E2 8C 8A DC D4 52 50 F4 EE 29 83 4C 5C AA
      00003FE0:   C5 0B 5E BF 94 50 17 85 66 4E 78 AE 9B 5F DB FA
      00003FF0:   DF 73 0D ED 97 98 5D 65 91 35 F5 DA BA D8 83 FF
      00004000:   AC 60 46 A0 F6 29 88 1F 76 14 76 46 D8 E2 A8 67
      00004010:   3B 14 29 56 21 F7

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 8):
      00000:   D3 CD 87 D5 68 74 07 82 39 78 34 4C 06 B9 28 A8
      00010:   58 98 B7 39 A3 1D 3D E5 FF 2B 78 8E F3 91 96 ED

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08

      nonce:
      00000:   2F E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 B0

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        E3DF00F169A76FA19FE55FA304E0A552
                             5A28FDBD3DD4CA654B89140EFD69E263
                             28A65A77F5D8B2E2F73568F7A677E5DF
                             8D225FAA8ED5FED98F09963FF1E82161
                             81595E9FA6989CCABC2150CA668D70EA
                             8CB6F62BCC528D26B52FB27AB70F194A
                             30E5C9085D9323D38745093070D15650
                             52468045F3398DC5BF93D6A983956E1D
                             3077337B773DAF4B9A6BA5BC569A251D
                             34FE23DF7B9343A0550094  [...]
                             2B516EE4A4971FD26EFB9293981435E9
                             FCC560B618B8ED0A52589E7342C25325
                             11C3D7C145559B8119BC02CB22CBF1EB
                             915578E8468806B2D0728C591B617354
                             CC47D51FF2363197A559018AD3498846
                             AD167DD086BD12EF52179D45ABF06C28
                             97B0C1D8AAD49413E0CCC086586D537A
                             296F9CEEB7E7E1DD2537540232C6BD71
                             619FC93BAE3FD8B0C95EA9915B6127B9
                             9F87884541F7

    TLSCiphertext:
      00000000:   17 03 03 40 11 E3 DF 00 F1 69 A7 6F A1 9F E5 5F
      00000010:   A3 04 E0 A5 52 5A 28 FD BD 3D D4 CA 65 4B 89 14
      00000020:   0E FD 69 E2 63 28 A6 5A 77 F5 D8 B2 E2 F7 35 68
      00000030:   F7 A6 77 E5 DF 8D 22 5F AA 8E D5 FE D9 8F 09 96
      00000040:   3F F1 E8 21 61 81 59 5E 9F A6 98 9C CA BC 21 50
      00000050:   CA 66 8D 70 EA 8C B6 F6 2B CC 52 8D 26 B5 2F B2
      00000060:   7A B7 0F 19 4A 30 E5 C9 08 5D 93 23 D3 87 45 09
      00000070:   30 70 D1 56 50 52 46 80 45 F3 39 8D C5 BF 93 D6
      00000080:   A9 83 95 6E 1D 30 77 33 7B 77 3D AF 4B 9A 6B A5
      00000090:   BC 56 9A 25 1D 34 FE 23 DF 7B 93 43 A0 55 00 94
      [...]
      00003F80:   2B 51 6E E4 A4 97 1F D2 6E FB 92 93 98 14 35 E9
      00003F90:   FC C5 60 B6 18 B8 ED 0A 52 58 9E 73 42 C2 53 25
      00003FA0:   11 C3 D7 C1 45 55 9B 81 19 BC 02 CB 22 CB F1 EB
      00003FB0:   91 55 78 E8 46 88 06 B2 D0 72 8C 59 1B 61 73 54
      00003FC0:   CC 47 D5 1F F2 36 31 97 A5 59 01 8A D3 49 88 46
      00003FD0:   AD 16 7D D0 86 BD 12 EF 52 17 9D 45 AB F0 6C 28
      00003FE0:   97 B0 C1 D8 AA D4 94 13 E0 CC C0 86 58 6D 53 7A
      00003FF0:   29 6F 9C EE B7 E7 E1 DD 25 37 54 02 32 C6 BD 71
      00004000:   61 9F C9 3B AE 3F D8 B0 C9 5E A9 91 5B 61 27 B9
      00004010:   9F 87 88 45 41 F7

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 9):
      00000:   D3 CD 87 D5 68 74 07 82 39 78 34 4C 06 B9 28 A8
      00010:   58 98 B7 39 A3 1D 3D E5 FF 2B 78 8E F3 91 96 ED

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09

      nonce:
      00000:   2F E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 B1

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        4AFCD1257E2C8D4626BC0BFBB30F2F9C
                             A57A9D0DEC090B4248CAADDFE7AA4AEB
                             770F285384FEA308CADE2EEF318148C2
                             BED4870ABEE1955CCA41CE8344C3EDA4
                             7C2512CDD19FD54C7E0260BBC7BD8DD1
                             EE9D4EBADD3D7915D0A029D7847CA05D
                             078068CC8A792FED69A4E655A6E6D22D
                             A134ECA2BDECA1E59D3AE7313E45E785
                             AF89A8F1890BFCC59F03F39C4FB2337C
                             326D94FA04F5548619D6DC  [...]
                             79B6F56B6EBF8B8860436EFF9D8F03CC
                             73BDF446D30F918AF8FF8BA2D078D243
                             1AC04657D7871203F15969F160820D7D
                             FCA78F65FF954CE5549F2C78AA3A0885
                             04527FC561B6AE06020A8772B75CE933
                             6CAC35B536A50DB26930BFA21E9EB56E
                             A20E39CC2BBBA66D41C2E8720AA0143D
                             298D8036D7B0090A0214F58C5B1890A7
                             5B4783820395E39421F4357A49597EB0
                             64123818EACE

    TLSCiphertext:
      00000000:   17 03 03 40 11 4A FC D1 25 7E 2C 8D 46 26 BC 0B
      00000010:   FB B3 0F 2F 9C A5 7A 9D 0D EC 09 0B 42 48 CA AD
      00000020:   DF E7 AA 4A EB 77 0F 28 53 84 FE A3 08 CA DE 2E
      00000030:   EF 31 81 48 C2 BE D4 87 0A BE E1 95 5C CA 41 CE
      00000040:   83 44 C3 ED A4 7C 25 12 CD D1 9F D5 4C 7E 02 60
      00000050:   BB C7 BD 8D D1 EE 9D 4E BA DD 3D 79 15 D0 A0 29
      00000060:   D7 84 7C A0 5D 07 80 68 CC 8A 79 2F ED 69 A4 E6
      00000070:   55 A6 E6 D2 2D A1 34 EC A2 BD EC A1 E5 9D 3A E7
      00000080:   31 3E 45 E7 85 AF 89 A8 F1 89 0B FC C5 9F 03 F3
      00000090:   9C 4F B2 33 7C 32 6D 94 FA 04 F5 54 86 19 D6 DC
      [...]
      00003F80:   79 B6 F5 6B 6E BF 8B 88 60 43 6E FF 9D 8F 03 CC
      00003F90:   73 BD F4 46 D3 0F 91 8A F8 FF 8B A2 D0 78 D2 43
      00003FA0:   1A C0 46 57 D7 87 12 03 F1 59 69 F1 60 82 0D 7D
      00003FB0:   FC A7 8F 65 FF 95 4C E5 54 9F 2C 78 AA 3A 08 85
      00003FC0:   04 52 7F C5 61 B6 AE 06 02 0A 87 72 B7 5C E9 33
      00003FD0:   6C AC 35 B5 36 A5 0D B2 69 30 BF A2 1E 9E B5 6E
      00003FE0:   A2 0E 39 CC 2B BB A6 6D 41 C2 E8 72 0A A0 14 3D
      00003FF0:   29 8D 80 36 D7 B0 09 0A 02 14 F5 8C 5B 18 90 A7
      00004000:   5B 47 83 82 03 95 E3 94 21 F4 35 7A 49 59 7E B0
      00004010:   64 12 38 18 EA CE

    ---------------------------Client-----------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      Derived #1 = Derive-Secret(HandshakeSecret, "derived", "") =
        HKDF-Expand-Label(HandshakeSecret, "derived", "", 32):
        00000:   EA 3C 54 BB D1 4E F9 D7 50 77 6F AB E3 95 BE 2A
        00010:   BD DB BB B7 1C 13 C2 BD 60 9E 35 15 79 4A FA 02

      MainSecret = HKDF-Extract(Salt: Derived #1, IKM: 0^256):
      00000:   31 BB 1D 61 2C CD 53 32 68 8A 55 1A 48 CA 25 0F
      00010:   24 78 3D 4A B0 B4 A7 6D 3F E5 06 7A 26 16 A4 A3

      HM2 = (ClientHello, ServerHello, EncryptedExtensions, Certificate,
       CertificateVerify, Server Finished)

      TH2 = Transcript-Hash(HM2):
      00000:   9E BC 5F BE 32 D9 F4 0D 48 F8 EE CE BB 62 31 A5
      00010:   33 C2 C0 EF 24 32 77 B9 6D 6F 7A D3 BB FD 14 94

      client_application_traffic_secret (CATS):
      CATS = Derive-Secret(MainSecret, "c ap traffic", HM2) =
        HKDF-Expand-Label(MainSecret, "c ap traffic", TH2, 32):
        00000:   8A CF 74 6B EC 31 17 6C BD 14 2C 75 80 6C 27 0A
        00010:   0A EF 6F C3 8E 0D 8F DC B5 A8 85 25 36 3A DE 81

      client_write_key_ap = HKDF-Expand-Label(CATS, "key", "", 32):
      00000:   7B E6 4E 2C 12 78 7B 5B 8C 87 56 C4 3D 92 FA EF
      00010:   64 F1 5A 3A 3C 10 81 AD 34 BC A5 06 F0 32 24 15

      client_write_iv_ap = HKDF-Expand-Label(CATS, "iv", "", 16):
      00000:   31 09 57 EF 71 31 44 33 F5 76 CC 9B 00 AD 93 54

      client_record_write_key = TLSTREE(client_write_key_ap, 0):
      00000:   D4 9A 57 15 49 E7 48 94 9F A2 4B 88 34 23 2C A8
      00010:   75 D3 7A 26 C4 BB 5C 62 A2 61 DA B3 72 65 05 26

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

      nonce:
      00000:   31 09 57 EF 71 31 44 33 F5 76 CC 9B 00 AD 93 54

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        EA6CB652C7CBE6B50560D0364DC94D90
                             2560DFE55D8B83C8AA919F5A1E5492E7
                             4CA5156F18BEC8EAB6971CAA2D2C1FF1
                             46EA5FEF5D62682601868FFCD2688F34
                             83899C31F6BA87538682E7F895F653C0
                             9BFE95ABF3EEDF7EBB261CCC593DFCB0
                             04F05119567148BB35F3C7B4F09713A6
                             247A047EF29B05F7720E375A6E3264F4
                             7922EAEBE3AA6D1E80832806D5F20E7C
                             56662A7128B191829597DB  [...]
                             6A5184907D9FF8D3FC0994A3C850DDBC
                             2D0420EB66EA177FCDD78F16246E2076
                             039C525604F79A007F472AC7A20A4574
                             1B9D96E38E565899D40A724B8A37FF68
                             702BF9A645D04962BBC9C66A35FFD219
                             A08A385FE4CDD0A1F3F080BECDF01E45
                             68C338FAD2C850DFEAA98A7F1B95ECA1
                             72BA7F7526E3BFF2EFF2395CE4561867
                             DC9DE8FD10F38BCA1E44B0207AF4CCE8
                             8155836330BC

    TLSCiphertext:
      00000000:   17 03 03 40 11 EA 6C B6 52 C7 CB E6 B5 05 60 D0
      00000010:   36 4D C9 4D 90 25 60 DF E5 5D 8B 83 C8 AA 91 9F
      00000020:   5A 1E 54 92 E7 4C A5 15 6F 18 BE C8 EA B6 97 1C
      00000030:   AA 2D 2C 1F F1 46 EA 5F EF 5D 62 68 26 01 86 8F
      00000040:   FC D2 68 8F 34 83 89 9C 31 F6 BA 87 53 86 82 E7
      00000050:   F8 95 F6 53 C0 9B FE 95 AB F3 EE DF 7E BB 26 1C
      00000060:   CC 59 3D FC B0 04 F0 51 19 56 71 48 BB 35 F3 C7
      00000070:   B4 F0 97 13 A6 24 7A 04 7E F2 9B 05 F7 72 0E 37
      00000080:   5A 6E 32 64 F4 79 22 EA EB E3 AA 6D 1E 80 83 28
      00000090:   06 D5 F2 0E 7C 56 66 2A 71 28 B1 91 82 95 97 DB
      [...]
      00003F80:   6A 51 84 90 7D 9F F8 D3 FC 09 94 A3 C8 50 DD BC
      00003F90:   2D 04 20 EB 66 EA 17 7F CD D7 8F 16 24 6E 20 76
      00003FA0:   03 9C 52 56 04 F7 9A 00 7F 47 2A C7 A2 0A 45 74
      00003FB0:   1B 9D 96 E3 8E 56 58 99 D4 0A 72 4B 8A 37 FF 68
      00003FC0:   70 2B F9 A6 45 D0 49 62 BB C9 C6 6A 35 FF D2 19
      00003FD0:   A0 8A 38 5F E4 CD D0 A1 F3 F0 80 BE CD F0 1E 45
      00003FE0:   68 C3 38 FA D2 C8 50 DF EA A9 8A 7F 1B 95 EC A1
      00003FF0:   72 BA 7F 75 26 E3 BF F2 EF F2 39 5C E4 56 18 67
      00004000:   DC 9D E8 FD 10 F3 8B CA 1E 44 B0 20 7A F4 CC E8
      00004010:   81 55 83 63 30 BC

    ---------------------------Client-----------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 1):
      00000:   D4 9A 57 15 49 E7 48 94 9F A2 4B 88 34 23 2C A8
      00010:   75 D3 7A 26 C4 BB 5C 62 A2 61 DA B3 72 65 05 26

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01

      nonce:
      00000:   31 09 57 EF 71 31 44 33 F5 76 CC 9B 00 AD 93 55

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        0D486A03D03A020296EA0AD1D684A9F4
                             AE35824129141D3434CEE064FD5E966F
                             88D6E8903913417658E46C49B18BB0CC
                             B29B663D3F380A2CF9E5234BCD27F3A4
                             E12EBF3A3C69DB7661B08FC1685FADDE
                             50F68028A6E85EE12729D6F9CAD762FF
                             A6BAB5FC94AC65BAA36885DAF85C9B27
                             C68F9E97AB85ECFA760CDD22F9A8C0BA
                             6097D7960587CA708834516D9588592D
                             D1B8E05210BAA640FE6540  [...]
                             55A9C5A6557D35B8F1A9804BFA0F2789
                             3EDC6AA0350E9630AFF6C9B06C3CE01D
                             5BE51E87EBFFAC58230D074BE121F077
                             9D08F8177AFFFBB36DCEFDD0D0696873
                             A772B9A1DA73C681B0F8359EC1C74B6E
                             0452095C622C4C797F450CAA4F26975A
                             311F41F31C6A617747298CC052A6376F
                             A46191658FEE5BD8D7A998E7F12E8838
                             7365BAAD4BA490114733FC15A58148E6
                             186484821A94

    TLSCiphertext:
      00000000:   17 03 03 40 11 0D 48 6A 03 D0 3A 02 02 96 EA 0A
      00000010:   D1 D6 84 A9 F4 AE 35 82 41 29 14 1D 34 34 CE E0
      00000020:   64 FD 5E 96 6F 88 D6 E8 90 39 13 41 76 58 E4 6C
      00000030:   49 B1 8B B0 CC B2 9B 66 3D 3F 38 0A 2C F9 E5 23
      00000040:   4B CD 27 F3 A4 E1 2E BF 3A 3C 69 DB 76 61 B0 8F
      00000050:   C1 68 5F AD DE 50 F6 80 28 A6 E8 5E E1 27 29 D6
      00000060:   F9 CA D7 62 FF A6 BA B5 FC 94 AC 65 BA A3 68 85
      00000070:   DA F8 5C 9B 27 C6 8F 9E 97 AB 85 EC FA 76 0C DD
      00000080:   22 F9 A8 C0 BA 60 97 D7 96 05 87 CA 70 88 34 51
      00000090:   6D 95 88 59 2D D1 B8 E0 52 10 BA A6 40 FE 65 40
      [...]
      00003F80:   55 A9 C5 A6 55 7D 35 B8 F1 A9 80 4B FA 0F 27 89
      00003F90:   3E DC 6A A0 35 0E 96 30 AF F6 C9 B0 6C 3C E0 1D
      00003FA0:   5B E5 1E 87 EB FF AC 58 23 0D 07 4B E1 21 F0 77
      00003FB0:   9D 08 F8 17 7A FF FB B3 6D CE FD D0 D0 69 68 73
      00003FC0:   A7 72 B9 A1 DA 73 C6 81 B0 F8 35 9E C1 C7 4B 6E
      00003FD0:   04 52 09 5C 62 2C 4C 79 7F 45 0C AA 4F 26 97 5A
      00003FE0:   31 1F 41 F3 1C 6A 61 77 47 29 8C C0 52 A6 37 6F
      00003FF0:   A4 61 91 65 8F EE 5B D8 D7 A9 98 E7 F1 2E 88 38
      00004000:   73 65 BA AD 4B A4 90 11 47 33 FC 15 A5 81 48 E6
      00004010:   18 64 84 82 1A 94

    ---------------------------Client-----------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      client_record_write_key = TLSTREE(client_write_key_ap, 8):
      00000:   B8 2D 78 25 D1 5F AE 18 A7 01 32 28 B3 1C B0 C5
      00010:   97 52 C6 40 9C 5F 78 99 EC C6 95 0F 74 63 C0 90

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08

      nonce:
      00000:   31 09 57 EF 71 31 44 33 F5 76 CC 9B 00 AD 93 5C

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        F8B5732A300C8EF05FB712A2972F4DB8
                             4BE783A959090398E989516B6A54F333
                             331049283186BD1C42EFD98003A476A2
                             408EACE0D7047FB536979386C26B5523
                             F933A4F5BD7048B094EC5F5627EDFA98
                             99DE1AF8D9A493E481BA5DA0857BE15A
                             3F21CA01E22092159BAA770569CFBE54
                             F653BEFB4A8B32295DEFE992258F4581
                             257E936AF549E82D54EA6C09EF0D987B
                             F3A3E8453C1548CEF1C349  [...]
                             0EF4E88899AA3481AEDAE0E257449F80
                             A20CBDF070EC02211B6B9CBA9248B192
                             CF75C88A085DBFF77ABCFB1D82DAA421
                             1B487A48230350CBA4F338DD0BFD36D8
                             AAC5EE709456B7E317C78E7198FB7264
                             5B45EEFD3F93BF1C021F9E74A2ED2BCC
                             1CF5D367B553C7E7E9D80DD2447C7D13
                             D0345FEF2976696DFE579E5F71740C71
                             3124CFBAD66C7BB5BC21AAAE2F1E0860
                             5C248ADAF8BA

    TLSCiphertext:
      00000000:   17 03 03 40 11 F8 B5 73 2A 30 0C 8E F0 5F B7 12
      00000010:   A2 97 2F 4D B8 4B E7 83 A9 59 09 03 98 E9 89 51
      00000020:   6B 6A 54 F3 33 33 10 49 28 31 86 BD 1C 42 EF D9
      00000030:   80 03 A4 76 A2 40 8E AC E0 D7 04 7F B5 36 97 93
      00000040:   86 C2 6B 55 23 F9 33 A4 F5 BD 70 48 B0 94 EC 5F
      00000050:   56 27 ED FA 98 99 DE 1A F8 D9 A4 93 E4 81 BA 5D
      00000060:   A0 85 7B E1 5A 3F 21 CA 01 E2 20 92 15 9B AA 77
      00000070:   05 69 CF BE 54 F6 53 BE FB 4A 8B 32 29 5D EF E9
      00000080:   92 25 8F 45 81 25 7E 93 6A F5 49 E8 2D 54 EA 6C
      00000090:   09 EF 0D 98 7B F3 A3 E8 45 3C 15 48 CE F1 C3 49
      [...]
      00003F80:   0E F4 E8 88 99 AA 34 81 AE DA E0 E2 57 44 9F 80
      00003F90:   A2 0C BD F0 70 EC 02 21 1B 6B 9C BA 92 48 B1 92
      00003FA0:   CF 75 C8 8A 08 5D BF F7 7A BC FB 1D 82 DA A4 21
      00003FB0:   1B 48 7A 48 23 03 50 CB A4 F3 38 DD 0B FD 36 D8
      00003FC0:   AA C5 EE 70 94 56 B7 E3 17 C7 8E 71 98 FB 72 64
      00003FD0:   5B 45 EE FD 3F 93 BF 1C 02 1F 9E 74 A2 ED 2B CC
      00003FE0:   1C F5 D3 67 B5 53 C7 E7 E9 D8 0D D2 44 7C 7D 13
      00003FF0:   D0 34 5F EF 29 76 69 6D FE 57 9E 5F 71 74 0C 71
      00004000:   31 24 CF BA D6 6C 7B B5 BC 21 AA AE 2F 1E 08 60
      00004010:   5C 24 8A DA F8 BA

    ---------------------------Client-----------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Pad: 15360 bytes

    Record payload protection:

      client_record_write_key = TLSTREE(client_write_key_ap, 9):
      00000:   B8 2D 78 25 D1 5F AE 18 A7 01 32 28 B3 1C B0 C5
      00010:   97 52 C6 40 9C 5F 78 99 EC C6 95 0F 74 63 C0 90

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09

      nonce:
      00000:   31 09 57 EF 71 31 44 33 F5 76 CC 9B 00 AD 93 5D

      additional_data:
      00000:   17 03 03 40 11

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000410:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      00004000:  00

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  4011
    encrypted_record:        C1719B62D4F5E295AB8A4A2CBD6BBEF3
                             0F07297D96004EBABE315090247510A6
                             BEE6395676956B4249B16B52CE9FE171
                             B1F4693F48B3446D48A99B6224537FBB
                             9BC8BF54AEA688D21E39F17840DB9F33
                             632EA196922B7E15D6AE080F9F3B33F2
                             FABE63BB66E21C590785EFAEBE75BB1E
                             17C9E5F58A1B1D1101DE95F9BF346C62
                             1C63CABEB6D7245DB75F18DA495F129A
                             652CE6B7E0FE47FB210D6A  [...]
                             2AF9D515B26C3D8F37F9BF5F3A766D8B
                             03189A78605069179FB9CF9B1A449DC0
                             4F0FE37E67FDF9A0341B1F0D64AA2871
                             D4DFEF10EC7DFE7475CFE364BB4D9453
                             A9F176829887148F3E8C0EEE858F9C17
                             C0B753C145D13BD2A96B23822F73DC6C
                             FD623DE3CB70F8D507E436C20E393940
                             F3A36C913C0BCDFE672C903C5522AA41
                             0B318DD1268D035C59D3E11FF273B1D7
                             715E2FBF3ACA

    TLSCiphertext:
      00000000:   17 03 03 40 11 C1 71 9B 62 D4 F5 E2 95 AB 8A 4A
      00000010:   2C BD 6B BE F3 0F 07 29 7D 96 00 4E BA BE 31 50
      00000020:   90 24 75 10 A6 BE E6 39 56 76 95 6B 42 49 B1 6B
      00000030:   52 CE 9F E1 71 B1 F4 69 3F 48 B3 44 6D 48 A9 9B
      00000040:   62 24 53 7F BB 9B C8 BF 54 AE A6 88 D2 1E 39 F1
      00000050:   78 40 DB 9F 33 63 2E A1 96 92 2B 7E 15 D6 AE 08
      00000060:   0F 9F 3B 33 F2 FA BE 63 BB 66 E2 1C 59 07 85 EF
      00000070:   AE BE 75 BB 1E 17 C9 E5 F5 8A 1B 1D 11 01 DE 95
      00000080:   F9 BF 34 6C 62 1C 63 CA BE B6 D7 24 5D B7 5F 18
      00000090:   DA 49 5F 12 9A 65 2C E6 B7 E0 FE 47 FB 21 0D 6A
      [...]
      00003F80:   2A F9 D5 15 B2 6C 3D 8F 37 F9 BF 5F 3A 76 6D 8B
      00003F90:   03 18 9A 78 60 50 69 17 9F B9 CF 9B 1A 44 9D C0
      00003FA0:   4F 0F E3 7E 67 FD F9 A0 34 1B 1F 0D 64 AA 28 71
      00003FB0:   D4 DF EF 10 EC 7D FE 74 75 CF E3 64 BB 4D 94 53
      00003FC0:   A9 F1 76 82 98 87 14 8F 3E 8C 0E EE 85 8F 9C 17
      00003FD0:   C0 B7 53 C1 45 D1 3B D2 A9 6B 23 82 2F 73 DC 6C
      00003FE0:   FD 62 3D E3 CB 70 F8 D5 07 E4 36 C2 0E 39 39 40
      00003FF0:   F3 A3 6C 91 3C 0B CD FE 67 2C 90 3C 55 22 AA 41
      00004000:   0B 31 8D D1 26 8D 03 5C 59 D3 E1 1F F2 73 B1 D7
      00004010:   71 5E 2F BF 3A CA

    ---------------------------Server---------------------------
    Alert message:
    level:                   01
    description:             00

    00000:   01 00

    Record payload protection:

     client_record_write_key = TLSTREE(client_write_key_ap, 10):
      00000:   D3 CD 87 D5 68 74 07 82 39 78 34 4C 06 B9 28 A8
      00010:   58 98 B7 39 A3 1D 3D E5 FF 2B 78 8E F3 91 96 ED

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0A

      nonce:
      00000:   2F E9 1F 71 18 35 40 26 31 7E 1A B4 D8 22 17 B2

      additional_data:
      00000:   17 03 03 00 13

      TLSInnerPlaintext:
      00000:   01 00 15

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0013
    encrypted_record:        7CBC00AD5D29E301739394D31942C6A1
                             6658E9

    TLSCiphertext:
      00000:   17 03 03 00 13 7C BC 00 AD 5D 29 E3 01 73 93 94
      00010:   D3 19 42 C6 A1 66 58 E9

    ---------------------------Client---------------------------
    Alert message:
    level:                   01
    description:             00

    00000:   01 00

    Record payload protection:

      client_record_write_key = TLSTREE(client_write_key_ap, 10):
      00000:   B8 2D 78 25 D1 5F AE 18 A7 01 32 28 B3 1C B0 C5
      00010:   97 52 C6 40 9C 5F 78 99 EC C6 95 0F 74 63 C0 90

      seqnum:
      00000:   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0A

      nonce:
      00000:   31 09 57 EF 71 31 44 33 F5 76 CC 9B 00 AD 93 5E

      additional_data:
      00000:   17 03 03 00 13

      TLSInnerPlaintext:
      00000:   01 00 15

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0013
    encrypted_record:        CB19F306C3641754BE4FC95390DF06F9
                             CD44AA

    TLSCiphertext:
      00000:   17 03 03 00 13 CB 19 F3 06 C3 64 17 54 BE 4F C9
      00010:   53 90 DF 06 F9 CD 44 AA

¶

### A.2. Example 2

#### A.2.1. Test Case

Test examples are given for the following instance of the TLS13_GOST profile:¶

1. Full TLS Handshake is used.¶
2. PSK with ECDHE key exchange mode is used. The elliptic curve GC256B is used for ECDHE shared secret calculation.¶
3. Authentication is used on the server and client sides. The external PSK is used for the mutual authentication.¶
4. TLS_GOSTR341112_256_WITH_MAGMA_MGM_L cipher suite is negotiated.¶
5. Four Application Data records are sent during the operation of the Record protocol. The sequence numbers are selected to demonstrate the operation of the TLSTREE function.¶
6. Alert protocol is used for closure of the connection.¶

#### A.2.2. Test Examples

    ePSK:
      00000:   80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80
      00000:   80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80

    ---------------------------Client---------------------------

    ClientHello1 message:
    msg_type:                01
    length:                  00007B
    body:
      legacy_version:        0303
      random:                01010101010101010101010101010101
                             01010101010101010101010101010101
      legacy_session_id:
        length:              00
        vector:              --
      cipher_suites:
        length:              0002
        vector:
          CipherSuite:       C104
      compression_methods:
        length:              01
        vector:
          CompressionMethod: 00
      extensions:
        length:              0050
        vector:
          Extension: /* supported_groups */
            extension_type:  000A
            extension_data:
              length:        0006
              vector:
                named_group_list:
                  length:    0004
                  vector:
                    /* GC256B */
                             0023
                    /* GC512C */
                             0028
          Extension: /* supported_versions */
            extension_type:  002B
            extension_data:
              length:        0003
              vector:
                versions:
                  length:    02
                  vector:
                             0304
          Extension: /* psk_key_exchange_modes */
            extension_type:  002D
            extension_data:
              length:        0002
              vector:
                ke_modes:
                  length:    01
                  vector:
                   /* psk_dhe_ke */
                             01
          Extension: /* key_share */
            extension_type:  0033
            extension_data:
              length:        0002
              client_shares:
                length:      0000
                vector:      --
          Extension: /* pre_shared_key */
            extension_type:  0029
            extension_data:
              length:        002F
              vector:
                identities:
                length:      000A
                vector:
                  identity:
                  length:    0004
                  vector:    6550534B
                  obfuscated_ticket_age:    00000000
                binders:
                length:      0021
                vector:
                  binder:
                  length:    20
                  vector:    6F3A0B91F2945EF7056DB74302BC34B6
                             DF77A88E09C587508AB6287C6C0514AD

    Truncate(ClientHello1):
      0000:   01 00 00 7B 03 03 01 01 01 01 01 01 01 01 01 01
      0010:   01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
      0020:   01 01 01 01 01 01 00 00 02 C1 04 01 00 00 50 00
      0030:   0A 00 06 00 04 00 23 00 28 00 2B 00 03 02 03 04
      0040:   00 2D 00 02 01 01 00 33 00 02 00 00 00 29 00 2F
      0050:   00 0A 00 04 65 50 53 4B 00 00 00 00

    Hash(Truncate(ClientHello1)):
      0000:   CC 9C A9 FC 18 DF 7A 2F 5F 63 27 D7 7B EA DC F1
      0010:   A7 3D 80 97 7F EB EA B4 F0 D3 83 39 30 00 2B 8D

    EarlySecret = HKDF-Extract(Salt: 0^Hlen, IKM: ePSK):
      00000:   42 30 7A 99 68 18 34 0D D0 56 2F 7F EB E6 2A B5
      00010:   70 F3 BC 88 9C A9 29 3A 89 0D F2 09 B9 1B BB F3

    binder_key = Derive-Secret(EarlySecret, "ext binder", "") =
      HKDF-Expand-Label(EarlySecret, "ext binder", "", 32):
        00000:   A4 37 62 C3 5E 75 54 1A 15 58 A0 8D 15 50 D3 29
        00010:   4C C3 F9 0C 73 99 EC C0 50 B9 15 37 A2 4C D5 E4

    finished_binder_key =
     HKDF-Expand-Label(binder_key, "finished", "", 32):
      00000:   F5 6F 59 C2 E2 F8 E7 7C 69 80 1F B1 7D B4 C1 8B
      00010:   ED 96 EB 32 FC D7 AB 95 AD D6 B1 CF F1 73 E6 65

    binder = HMAC(finished_binder_key, Hash(Truncate(ClientHello1))):
      00000:   6F 3A 0B 91 F2 94 5E F7 05 6D B7 43 02 BC 34 B6
      00010:   DF 77 A8 8E 09 C5 87 50 8A B6 28 7C 6C 05 14 AD

    0000:   01 00 00 7B 03 03 01 01 01 01 01 01 01 01 01 01
    0010:   01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    0020:   01 01 01 01 01 01 00 00 02 C1 04 01 00 00 50 00
    0030:   0A 00 06 00 04 00 23 00 28 00 2B 00 03 02 03 04
    0040:   0A 07 0B 07 0C 07 0D 07 0E 07 0F 00 2B 00 03 02
    0050:   00 2D 00 02 01 01 00 33 00 02 00 00 00 29 00 2F
    0060:   00 0A 00 04 65 50 53 4B 00 00 00 00 00 21 20 6F
    0070:   3A 0B 91 F2 94 5E F7 05 6D B7 43 02 BC 34 B6 DF
    0080:   77 A8 8E 09 C5 87 50 8A B6 28 7C 6C 05 14 AD

    Record layer message:
    type:                    16
    legacy_record_version:   0301
    length:                  007F
    fragment:                0100007B030301010101010101010101
                             01010101010101010101010101010101
                             010101010101000002C1040100005000
                             0A0006000400230028002B0003020304
                             0A070B070C070D070E070F002B000302
                             002D000201010033000200000029002F
                             000A00046550534B000000000021206F
                             3A0B91F2945EF7056DB74302BC34B6DF
                             77A88E09C587508AB6287C6C0514AD

    00000:   16 03 01 00 7F 01 00 00 7B 03 03 01 01 01 01 01
    00010:   01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    00020:   01 01 01 01 01 01 01 01 01 01 01 00 00 02 C1 04
    00030:   01 00 00 50 00 0A 00 06 00 04 00 23 00 28 00 2B
    00040:   00 03 02 03 04 0A 07 0B 07 0C 07 0D 07 0E 07 0F
    00050:   00 2B 00 03 02 00 2D 00 02 01 01 00 33 00 02 00
    00060:   00 00 29 00 2F 00 0A 00 04 65 50 53 4B 00 00 00
    00070:   00 00 21 20 6F 3A 0B 91 F2 94 5E F7 05 6D B7 43
    00080:   02 BC 34 B6 DF 77 A8 8E 09 C5 87 50 8A B6 28 7C
    00090:   6C 05 14 AD

    ---------------------------Server---------------------------

    HelloRetryRequest message:
    msg_type:                02
    length:                  000034
    body:
      legacy_version:        0303
      random:                CF21AD74E59A6111BE1D8C021E65B891
                             C2A211167ABB8C5E079E09E2C8A8339C
      legacy_session_id:
        length:              00
        vector:              --
      cipher_suite:
          CipherSuite:       C104
      compression_method:
          CompressionMethod: 00
      extensions:
        length:              000C
        vector:
          Extension: /* supported_versions */
            extension_type:  002B
            extension_data:
              length:        0002
              vector:
                selected_version:
                             0304
          Extension: /* key_share */
            extension_type:  0033
            extension_data:
              length:        0002
              selected_group:   0023

    00000:   02 00 00 34 03 03 CF 21 AD 74 E5 9A 61 11 BE 1D
    00010:   8C 02 1E 65 B8 91 C2 A2 11 16 7A BB 8C 5E 07 9E
    00020:   09 E2 C8 A8 33 9C 00 C1 04 00 00 0C 00 2B 00 02
    00030:   03 04 00 33 00 02 00 23

    Record layer message:
    type:                    16
    legacy_record_version:   0303
    length:                  0038
    fragment:                020000340303CF21AD74E59A6111BE1D
                             8C021E65B891C2A211167ABB8C5E079E
                             09E2C8A8339C00C10400000C002B0002
                             0304003300020023

    00000:   16 03 03 00 38 02 00 00 34 03 03 CF 21 AD 74 E5
    00010:   9A 61 11 BE 1D 8C 02 1E 65 B8 91 C2 A2 11 16 7A
    00020:   BB 8C 5E 07 9E 09 E2 C8 A8 33 9C 00 C1 04 00 00
    00030:   0C 00 2B 00 02 03 04 00 33 00 02 00 23

    ---------------------------Client---------------------------

    ClientHello2 message:
    msg_type:                01
    length:                  0000BF
    body:
      legacy_version:        0303
      random:                01010101010101010101010101010101
                             01010101010101010101010101010101
      legacy_session_id:
        length:              00
        vector:              --
      cipher_suites:
        length:              0002
        vector:
          CipherSuite:       C104
      compression_methods:
        length:              01
        vector:
          CompressionMethod: 00
      extensions:
        length:              0094
        vector:
          Extension: /* supported_groups */
            extension_type:  000A
            extension_data:
              length:        0006
              vector:
                named_group_list:
                  length:    0004
                  vector:
                    /* GC256B */
                             0023
                    /* GC512C */
                             0028
          Extension: /* supported_versions */
            extension_type:  002B
            extension_data:
              length:        0003
              vector:
                versions:
                  length:    02
                  vector:
                             0304
          Extension: /* psk_key_exchange_modes */
            extension_type:  002D
            extension_data:
              length:        0002
              vector:
                ke_modes:
                  length:    01
                  vector:
                   /* psk_dhe_ke */
                             01
          Extension: /* key_share */
            extension_type:  0033
            extension_data:
              length:        0046
              client_shares:
                length:      0044
                vector:
                  group:     0023
                  key_exchange:
                    length:   0040
                    vector:
                              D35AA795C452450949591D60E7D5C076
                              056D6646F3B80708CDC2E7034DE85F68
                              D1122DC32A3B986D40FF910622A06C12
                              26D9EC3A7D3A52E0A37C282C47602A43
          Extension: /* pre_shared_key */
            extension_type:  0029
            extension_data:
              length:        002F
              vector:
                identities:
                length:      000A
                vector:
                  identity:
                  length:    0004
                  vector:    6550534B
                  obfuscated_ticket_age:    00000000
                binders:
                length:      0021
                vector:
                  binder:
                  length:    20
                  vector:    0BF74AA3933B7D1A66961B6E2CFB6A28
                             04D696BB607710E3F56DDA91F56B57CB

    Truncate(ClientHello2):
      0000:   01 00 00 BF 03 03 01 01 01 01 01 01 01 01 01 01
      0010:   01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
      0020:   01 01 01 01 01 01 00 00 02 C1 04 01 00 00 94 00
      0030:   0A 00 06 00 04 00 23 00 28 00 2B 00 03 02 03 04
      0040:   00 2D 00 02 01 01 00 33 00 46 00 44 00 23 00 40
      0050:   D3 5A A7 95 C4 52 45 09 49 59 1D 60 E7 D5 C0 76
      0060:   05 6D 66 46 F3 B8 07 08 CD C2 E7 03 4D E8 5F 68
      0070:   D1 12 2D C3 2A 3B 98 6D 40 FF 91 06 22 A0 6C 12
      0080:   26 D9 EC 3A 7D 3A 52 E0 A3 7C 28 2C 47 60 2A 43
      0090:   00 29 00 2F 00 0A 00 04 65 50 53 4B 00 00 00 00

    finished_binder_key:
      00000:   F5 6F 59 C2 E2 F8 E7 7C 69 80 1F B1 7D B4 C1 8B
      00010:   ED 96 EB 32 FC D7 AB 95 AD D6 B1 CF F1 73 E6 65

    BinderMsg = (FE 00 00 20 | Hash(ClientHello1), HelloRetryRequest,
     Truncate(ClientHello2))

    Hash(BinderMsg) =
        73 7C 63 74 1B 3A EA DF C8 73 DF 6E EA 81 19 32
        BF CE 93 4F AA 85 84 F1 44 F8 77 13 E0 D0 CA 32

    binder = HMAC(finished_binder_key, Hash(BinderMsg)) =
        0B F7 4A A3 93 3B 7D 1A 66 96 1B 6E 2C FB 6A 28
        04 D6 96 BB 60 77 10 E3 F5 6D DA 91 F5 6B 57 CB

    0000:   01 00 00 BF 03 03 01 01 01 01 01 01 01 01 01 01
    0010:   01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    0020:   01 01 01 01 01 01 00 00 02 C1 04 01 00 00 94 00
    0030:   0A 00 06 00 04 00 23 00 28 00 2B 00 03 02 03 04
    0040:   00 2D 00 02 01 01 00 33 00 46 00 44 00 23 00 40
    0050:   D3 5A A7 95 C4 52 45 09 49 59 1D 60 E7 D5 C0 76
    0060:   05 6D 66 46 F3 B8 07 08 CD C2 E7 03 4D E8 5F 68
    0070:   D1 12 2D C3 2A 3B 98 6D 40 FF 91 06 22 A0 6C 12
    0080:   26 D9 EC 3A 7D 3A 52 E0 A3 7C 28 2C 47 60 2A 43
    0090:   00 29 00 2F 00 0A 00 04 65 50 53 4B 00 00 00 00
    00A0:   00 21 20 0B F7 4A A3 93 3B 7D 1A 66 96 1B 6E 2C
    00B0:   FB 6A 28 04 D6 96 BB 60 77 10 E3 F5 6D DA 91 F5
    00C0:   6B 57 CB

    Record layer message:
    type:                    16
    legacy_record_version:   0303
    length:                  00C3
    fragment:                010000BF030301010101010101010101
                             01010101010101010101010101010101
                             010101010101000002C1040100009400
                             0A0006000400230028002B0003020304
                             002D0002010100330046004400230040
                             D35AA795C452450949591D60E7D5C076
                             056D6646F3B80708CDC2E7034DE85F68
                             D1122DC32A3B986D40FF910622A06C12
                             26D9EC3A7D3A52E0A37C282C47602A43
                             0029002F000A00046550534B00000000
                             0021200BF74AA3933B7D1A66961B6E2C
                             FB6A2804D696BB607710E3F56DDA91F5
                             6B57CB

    00000:   16 03 03 00 C3 01 00 00 BF 03 03 01 01 01 01 01
    00010:   01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
    00020:   01 01 01 01 01 01 01 01 01 01 01 00 00 02 C1 04
    00030:   01 00 00 94 00 0A 00 06 00 04 00 23 00 28 00 2B
    00040:   00 03 02 03 04 00 2D 00 02 01 01 00 33 00 46 00
    00050:   44 00 23 00 40 D3 5A A7 95 C4 52 45 09 49 59 1D
    00060:   60 E7 D5 C0 76 05 6D 66 46 F3 B8 07 08 CD C2 E7
    00070:   03 4D E8 5F 68 D1 12 2D C3 2A 3B 98 6D 40 FF 91
    00080:   06 22 A0 6C 12 26 D9 EC 3A 7D 3A 52 E0 A3 7C 28
    00090:   2C 47 60 2A 43 00 29 00 2F 00 0A 00 04 65 50 53
    000A0:   4B 00 00 00 00 00 21 20 0B F7 4A A3 93 3B 7D 1A
    000B0:   66 96 1B 6E 2C FB 6A 28 04 D6 96 BB 60 77 10 E3
    000C0:   F5 6D DA 91 F5 6B 57 CB

    ---------------------------Server---------------------------

    ServerHello message:
    msg_type:                02
    length:                  00007C
    body:
      legacy_version:        0303
      random:                82828282828282828282828282828282
                             82828282828282828282828282828282

      legacy_session_id:
        length:              00
        vector:              --
      cipher_suite:
          CipherSuite:       C104
      compression_method:
          CompressionMethod: 00
      extensions:
        length:              0054
        vector:
          Extension: /* supported_versions */
            extension_type:  002B
            extension_data:
              length:        0002
              vector:
                selected_version:
                             0304
          Extension: /* key_share */
            extension_type:  0033
            extension_data:
              length:        0044
              vector:
                group:       0023
                key_exchange:
                  length:    0040
                  vector:
                             3D2FB067E106CC9980FB8842811164BA
                             708BBB5038D5EDFBEE1D5E5DFBE6F74F
                             1931217C67C2BDF46253DB9CE3487241
                             F2DBD84E2DABDF65455851B0B19AEFEC
          Extension: /* pre_shared_key */
            extension_type:  0029
            extension_data:
              length:        0002
              selected_identity:     0000

    00000:   02 00 00 7C 03 03 82 82 82 82 82 82 82 82 82 82
    00010:   82 82 82 82 82 82 82 82 82 82 82 82 82 82 82 82
    00020:   82 82 82 82 82 82 00 C1 04 00 00 54 00 2B 00 02
    00030:   03 04 00 33 00 44 00 23 00 40 3D 2F B0 67 E1 06
    00040:   CC 99 80 FB 88 42 81 11 64 BA 70 8B BB 50 38 D5
    00050:   ED FB EE 1D 5E 5D FB E6 F7 4F 19 31 21 7C 67 C2
    00060:   BD F4 62 53 DB 9C E3 48 72 41 F2 DB D8 4E 2D AB
    00070:   DF 65 45 58 51 B0 B1 9A EF EC 00 29 00 02 00 00

    Record layer message:
    type:                    16
    legacy_record_version:   0303
    length:                  0080
    fragment:                020000410303933EA21E49C31BC3A345
                             6165889684CAA5576CE7924A24F58113
                             808DBD9EF85610C3802A561550EC78D6
                             ED51AC2439D7E7C101000009FF010001
                             0000170000

    00000:   16 03 03 00 80 02 00 00 7C 03 03 82 82 82 82 82
    00010:   82 82 82 82 82 82 82 82 82 82 82 82 82 82 82 82
    00020:   82 82 82 82 82 82 82 82 82 82 82 00 C1 04 00 00
    00030:   54 00 2B 00 02 03 04 00 33 00 44 00 23 00 40 3D
    00040:   2F B0 67 E1 06 CC 99 80 FB 88 42 81 11 64 BA 70
    00050:   8B BB 50 38 D5 ED FB EE 1D 5E 5D FB E6 F7 4F 19
    00060:   31 21 7C 67 C2 BD F4 62 53 DB 9C E3 48 72 41 F2
    00070:   DB D8 4E 2D AB DF 65 45 58 51 B0 B1 9A EF EC 00
    00080:   29 00 02 00 00

    ---------------------------Client---------------------------

    d_C^res:
    00000:   02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
    00010:   02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02

    Q_S^res:
    00000:   3D 2F B0 67 E1 06 CC 99 80 FB 88 42 81 11 64 BA
    00010:   70 8B BB 50 38 D5 ED FB EE 1D 5E 5D FB E6 F7 4F
    00020:   19 31 21 7C 67 C2 BD F4 62 53 DB 9C E3 48 72 41
    00030:   F2 DB D8 4E 2D AB DF 65 45 58 51 B0 B1 9A EF EC

    ECDHE:
    00000:   98 5A 86 59 D5 5A 8D 48 E0 E6 77 13 96 58 0B 2C
    00010:   DC DA 37 E9 2A EE 18 14 D1 0E 1B F2 A4 4F 0D 24

    ---------------------------Server---------------------------

    d_S^res:
    00000:   83 83 83 83 83 83 83 83 83 83 83 83 83 83 83 83
    00010:   83 83 83 83 83 83 83 83 83 83 83 83 83 83 83 83

    Q_C^res:
    00000:   D3 5A A7 95 C4 52 45 09 49 59 1D 60 E7 D5 C0 76
    00010:   05 6D 66 46 F3 B8 07 08 CD C2 E7 03 4D E8 5F 68
    00020:   D1 12 2D C3 2A 3B 98 6D 40 FF 91 06 22 A0 6C 12
    00030:   26 D9 EC 3A 7D 3A 52 E0 A3 7C 28 2C 47 60 2A 43

    ECDHE:
    00000:   98 5A 86 59 D5 5A 8D 48 E0 E6 77 13 96 58 0B 2C
    00010:   DC DA 37 E9 2A EE 18 14 D1 0E 1B F2 A4 4F 0D 24

    ---------------------------Server---------------------------

    EncryptedExtensions message:
    msg_type:                08
    length:                  000002
    body:
      extensions:
        length:              0000
        vector:              --

    00000:   08 00 00 02 00 00

    Record payload protection:

      EarlySecret = HKDF-Extract(Salt: 0^256, IKM: ePSK):
      00000:   42 30 7A 99 68 18 34 0D D0 56 2F 7F EB E6 2A B5
      00010:   70 F3 BC 88 9C A9 29 3A 89 0D F2 09 B9 1B BB F3

      Derived #0 = Derive-Secret(EarlySecret, "derived", "") =
      HKDF-Expand-Label(EarlySecret, "derived", "", 32):
      00000:   6B 4E 9C 49 C5 C6 F1 7F 60 B2 B8 4B 55 0A 16 38
      00010:   14 09 5B 80 88 8E C0 B0 CA 52 E4 09 0C B3 F8 BE

      HandshakeSecret = HKDF-Extract(Salt: Derived #0, IKM: ECDHE):
      00000:   A9 CB E6 58 50 2F 3F D1 18 66 51 5F D6 15 E9 88
      00010:   0D 1E 61 B5 28 34 BB FD 5F 19 C2 4C 53 C8 79 7F

      HM1 = (FE 00 00 20 | Hash(ClientHello1), HelloRetryRequest,
       ClientHello2, ServerHello)

      TH1 = Transcript-Hash(HM1):
      00000:   88 8D 5D 1E 15 98 65 05 97 3E F2 0F 9A FA F5 71
      00010:   20 A3 66 C2 D2 19 91 D1 5E 25 07 0C 3D 07 D5 E9

      server_handshake_traffic_secret (SHTS):
      SHTS = Derive-Secret(HandshakeSecret, "s hs traffic", HM1) =
        HKDF-Expand-Label(HandshakeSecret, "s hs traffic", TH1, 32):
        00000:   4E F8 68 E5 5B 27 F8 88 8A 6F 82 DA A7 0B 01 1B
        00010:   DA B1 77 95 10 F0 88 78 A0 22 2B 3E 2C 76 E6 83

      server_write_key_hs = HKDF-Expand-Label(SHTS, "key", "", 32):
      00000:   DB 61 9B 58 F4 41 1E 33 4F 07 EA C7 7C EF EF CA
      00010:   78 41 F5 40 88 B8 D0 D5 CE 6A 62 C9 82 85 C6 81

      server_write_iv_hs = HKDF-Expand-Label(SHTS, "iv", "", 16):
      00000:   FC 9E 2A C6 63 04 C2 5B

      server_record_write_key = TLSTREE(server_write_key_hs, 0):
      00000:   3C 7D F3 5E AC F4 FE 71 EA 6A DC E0 DC 44 5D D3
      00010:   A9 29 EF CD 08 3F 18 2F BD 51 42 BA 68 6D 38 84

      seqnum:
      00000:   00 00 00 00 00 00 00 00

      nonce:
      00000:   7C 9E 2A C6 63 04 C2 5B

      additional_data:
      00000:   17 03 03 00 0F

      TLSInnerPlaintext:
      00000:   08 00 00 02 00 00 16

      TLSCiphertext:
      00000:   17 03 03 00 0F 49 67 A7 E1 AE 7B FB 37 5A 0F 4B
      00010:   25 45 91 17

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  000F
    encrypted_record:        4967A7E1AE7BFB375A0F4B
                             25459117

    00000:   17 03 03 00 0F 49 67 A7 E1 AE 7B FB 37 5A 0F 4B
    00010:   25 45 91 17

    ---------------------------Server---------------------------

    server_finished_key = HKDF-Expand-Label(SHTS, "finished", "", 32):
    00000:   AF 41 F7 7A CB 18 B4 C5 9D E0 F7 8D 46 D5 AE 95
    00010:   7A A4 92 A7 D8 D8 2A 36 F4 B2 09 B8 20 7C 79 03

    HMFinished = (FE 00 00 20 | Hash(ClientHello1), HelloRetryRequest,
     ClientHello2, ServerHello, EncryptedExtensions)

    Transcript-Hash(HMFinished):
    00000:   E0 5D D6 C9 DE BA 09 3D 72 AD 6F 4A 7D 0E 11 95
    00010:   FC E7 AE 31 93 F2 FF 5B 2D 0B F6 14 8E CB E7 B9

    FinishedHash =
    HMAC(server_finished_key,Transcript-Hash(HMFinished)):
    00000:   96 14 5B 61 68 E0 1C 4C F2 99 50 96 EE 12 C8 6B
    00010:   1F 53 1F 96 0A 48 9D E9 C3 44 2A 24 33 E9 AE EE

    Finished message:
    msg_type:                14
    length:                  000020
    body:
      verify_data:           96145B6168E01C4CF2995096EE12C86B
                             1F531F960A489DE9C3442A2433E9AEEE

    00000:   14 00 00 20 96 14 5B 61 68 E0 1C 4C F2 99 50 96
    00010:   EE 12 C8 6B 1F 53 1F 96 0A 48 9D E9 C3 44 2A 24
    00020:   33 E9 AE EE

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_hs, 1):
      00000:   3C 7D F3 5E AC F4 FE 71 EA 6A DC E0 DC 44 5D D3
      00010:   A9 29 EF CD 08 3F 18 2F BD 51 42 BA 68 6D 38 84

      seqnum:
      00000:   00 00 00 00 00 00 00 01

      nonce:
      00000:   7C 9E 2A C6 63 04 C2 5A

      additional_data:
      00000:   17 03 03 00 2D

      TLSInnerPlaintext:
      00000:   14 00 00 20 96 14 5B 61 68 E0 1C 4C F2 99 50 96
      00010:   EE 12 C8 6B 1F 53 1F 96 0A 48 9D E9 C3 44 2A 24
      00020:   33 E9 AE EE 16

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  002D
    encrypted_record:        3BFB2AEADBC349FD89AFB8E481F8426B
                             CC6B7F5D975FE05E5B28755C00BF353F
                             CA6A48E9F0145993C40CE06F37

    TLSCiphertext:
      00000:   17 03 03 00 2D 3B FB 2A EA DB C3 49 FD 89 AF B8
      00010:   E4 81 F8 42 6B CC 6B 7F 5D 97 5F E0 5E 5B 28 75
      00020:   5C 00 BF 35 3F CA 6A 48 E9 F0 14 59 93 C4 0C E0
      00030:   6F 37

    ---------------------------Client---------------------------

    EarlySecret = HKDF-Extract(Salt: 0^256, IKM: ePSK):
      00000:   42 30 7A 99 68 18 34 0D D0 56 2F 7F EB E6 2A B5
      00010:   70 F3 BC 88 9C A9 29 3A 89 0D F2 09 B9 1B BB F3

    Derived #0 = Derive-Secret(EarlySecret, "derived", "") =
      HKDF-Expand-Label(EarlySecret, "derived", "", 32):
      00000:   6B 4E 9C 49 C5 C6 F1 7F 60 B2 B8 4B 55 0A 16 38
      00010:   14 09 5B 80 88 8E C0 B0 CA 52 E4 09 0C B3 F8 BE

    HandshakeSecret = HKDF-Extract(Salt: Derived #0, IKM: ECDHE):
    00000:   A9 CB E6 58 50 2F 3F D1 18 66 51 5F D6 15 E9 88
    00010:   0D 1E 61 B5 28 34 BB FD 5F 19 C2 4C 53 C8 79 7F

    HM1 = (FE 00 00 20 | Hash(ClientHello1), HelloRetryRequest,
     ClientHello2, ServerHello)

    TH1 = Transcript-Hash(HM1):
    00000:   88 8D 5D 1E 15 98 65 05 97 3E F2 0F 9A FA F5 71
    00010:   20 A3 66 C2 D2 19 91 D1 5E 25 07 0C 3D 07 D5 E9

    client_handshake_traffic_secret (CHTS):
    CHTS = Derive-Secret(HandshakeSecret, "c hs traffic", HM1) =
      HKDF-Expand-Label(HandshakeSecret, "c hs traffic", TH1, 32):
      00000:    DF 00 4B 79 A1 D3 51 55 97 1B 0E 84 C8 91 99 7F
      00010:    FE E6 D0 1B 27 04 23 CC 74 64 4B 25 47 3E 78 60

    client_finished_key = HKDF-Expand-Label(CHTS, "finished", "", 32):
    00000:   1F A6 7D 28 9F F2 A6 85 C7 BE 13 FD F5 60 A6 D5
    00010:   A9 F5 EA 85 63 AD 6C C7 B4 85 30 76 59 A5 55 81

    HM2 = (FE 00 00 20 | Hash(ClientHello1), HelloRetryRequest,
     ClientHello2, ServerHello,
      EncryptedExtensions, Server Finished)

    TH2 =Transcript-Hash(HM2):
    00000:   53 06 24 EE 07 6F FF E1 04 DC 15 EB B4 2D 78 8F
    00010:   1E 4F EB 3E 8C 2D CF A5 CB 85 D7 2F 81 D0 6D 15

    FinishedHash = HMAC(client_finished_key, TH2):
    00000:   BB 83 09 94 BE 38 A9 8F FC A3 BF D2 35 CD 80 7E
    00010:   81 82 1E 67 37 AB 98 31 43 DC A9 7B 9E E0 23 25

    Finished message:
    msg_type:                14
    length:                  000020
    body:
      verify_data:           BB830994BE38A98FFCA3BFD235CD807E
                             81821E6737AB983143DCA97B9EE02325

    00000:   14 00 00 20 BB 83 09 94 BE 38 A9 8F FC A3 BF D2
    00010:   35 CD 80 7E 81 82 1E 67 37 AB 98 31 43 DC A9 7B
    00020:   9E E0 23 25

    Record payload protection:

      client_write_key_hs = HKDF-Expand-Label(CHTS, "key", "", 32):
      00000:   DF 66 60 1E DD D6 4E 96 1D FC 7D D0 21 2E F2 25
      00010:   C0 05 33 E6 DA A4 AD 24 18 5E BE B2 24 B5 46 B8

      client_write_iv_hs = HKDF-Expand-Label(CHTS, "iv", "", 16):
      00000:   E8 94 3C 9F A2 88 56 A1

      client_record_write_key = TLSTREE(client_write_key_hs, 0):
      00000:   BD 00 9F FC 04 A0 52 9E 60 78 EB A5 A0 7A DE 74
      00010:   93 7F F3 A1 AB 75 F7 AE 05 19 04 78 51 9B 6D F3

      seqnum:
      00000:   00 00 00 00 00 00 00 00

      nonce:
      00000:   68 94 3C 9F A2 88 56 A1

      additional_data:
      00000:   17 03 03 00 2D

      TLSInnerPlaintext:
      00000:   14 00 00 20 BB 83 09 94 BE 38 A9 8F FC A3 BF D2
      00010:   35 CD 80 7E 81 82 1E 67 37 AB 98 31 43 DC A9 7B
      00020:   9E E0 23 25 16

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  002D
    encrypted_record:        14254CA6B9EBCC4A951A3D1F1040B0B1
                             45446DF131946CEECBDB6A8EC534F194
                             223281B56532A703C492160E2C

    TLSCiphertext:
      00000:   17 03 03 00 2D 14 25 4C A6 B9 EB CC 4A 95 1A 3D
      00010:   1F 10 40 B0 B1 45 44 6D F1 31 94 6C EE CB DB 6A
      00020:   8E C5 34 F1 94 22 32 81 B5 65 32 A7 03 C4 92 16
      00030:   0E 2C

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

    Record payload protection:
      Derived #1 = Derive-Secret(HandshakeSecret, "derived", "") =
       HKDF-Expand-Label(HandshakeSecret, "derived", "", 32):
       00000:   BC 4D 6F E3 D9 43 78 21 1D 3D 64 1C 75 92 EB AA
       00010:   7A A2 96 47 9C 57 BD D1 E1 4C 7B 04 9F 6D F1 CD

      MainSecret = HKDF-Extract(Salt: Derived #1, IKM: 0^256):
      00000:   DB FF 82 86 2E 54 A1 41 3E 6C 2E D8 2C 6D A5 AF
      00010:   FD BF DE 12 30 2E 49 75 5B 61 F2 06 32 E1 0A 42

      HM2 = (FE 00 00 20 | Hash(ClientHello1), HelloRetryRequest,
       ClientHello2, ServerHello,
        EncryptedExtensions, Server Finished)

      TH2 = Transcript-Hash(HM2):
      00000:   53 06 24 EE 07 6F FF E1 04 DC 15 EB B4 2D 78 8F
      00010:   1E 4F EB 3E 8C 2D CF A5 CB 85 D7 2F 81 D0 6D 15

      SATS = Derive-Secret(MainSecret, "s ap traffic", HM2) =
       HKDF-Expand-Label(MainSecret, "s ap traffic", TH2, 32):
       00000:   52 91 26 2B EC B5 22 69 34 3A E8 27 9B 43 54 B1
       00010:   89 22 D5 15 04 60 8B A7 21 C4 72 46 7E EE E8 78

      server_write_key_ap = HKDF-Expand-Label(SATS, "key", "", 32):
      00000:   15 D9 2C 51 47 B2 13 10 ED ED F5 5B 3D 7A B7 76
      00000:   81 7D 6F E2 FC F2 30 D7 E3 F2 92 75 F6 E2 41 EC

      server_write_iv_ap = HKDF-Expand-Label(SATS, "iv", "", 8):
      00000:   71 2E 2F 11 CD 50 6E B9

      server_record_write_key = TLSTREE(server_write_key_ap, 0):
      00000:   7B B8 81 55 35 98 DE F5 34 FC AF 9B 77 A3 35 5B
      00010:   C3 BC A3 87 4D 67 40 F6 CB F5 C1 B6 D3 5C 65 ED

      seqnum:
      00000:   00 00 00 00 00 00 00 00

      nonce:
      00000:   71 2E 2F 11 CD 50 6E B9

      additional_data:
      00000:   17 03 03 04 09

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0409
    encrypted_record:        7CAA82039F67326C2D735EE809B57750
                             945F5CE2B0C47B8EF1ECADA3D3F1AD9E
                             3FBA5926FDB2B61197D08B8B1399167B
                             6C249C90C0A3101452FD72078FBFB057
                             31E06215019395DDCF44AA763DCB1ACA
                             8B3F47D033FBA12E7C0FBB4DFBDABD8B
                             97E996E8E36231BE8015412B90CCCFBB
                             E2BC967E597FC2E7B251A9BBEBAA245B
                             63139387203DB90BD1BF5300A5B577BF
                             46793DB1AA30FEDFD1E6A5
                             [...]
                             E1D55816BFD6BFFBF6E6FB23D86117D2
                             47441BC211D078199C1F8340BE808BA6
                             E5BE092B9E081E95D4A57672A07970A6
                             1FEF2F4B12A0F401FA30B813FE7CD1BF
                             881485157381B8489EC36296C6EE7538
                             0FB1DAA1B1473358FD87AA41D5DBA089
                             F528BD5F3B41B34002D945D7E0C49EFA
                             54A4EFB0DA4049F5F248B3F7D46FEC05
                             A25BBE0A5120106BC21C1EA25EFF3125
                             E079CA0F7FFA56FD89C1A80DA0A3

    TLSCiphertext:
      00000000:    17 03 03 04 09 7C AA 82 03 9F 67 32 6C 2D 73 5E
      00000010:    E8 09 B5 77 50 94 5F 5C E2 B0 C4 7B 8E F1 EC AD
      00000020:    A3 D3 F1 AD 9E 3F BA 59 26 FD B2 B6 11 97 D0 8B
      00000030:    8B 13 99 16 7B 6C 24 9C 90 C0 A3 10 14 52 FD 72
      00000040:    07 8F BF B0 57 31 E0 62 15 01 93 95 DD CF 44 AA
      00000050:    76 3D CB 1A CA 8B 3F 47 D0 33 FB A1 2E 7C 0F BB
      00000060:    4D FB DA BD 8B 97 E9 96 E8 E3 62 31 BE 80 15 41
      00000070:    2B 90 CC CF BB E2 BC 96 7E 59 7F C2 E7 B2 51 A9
      00000080:    BB EB AA 24 5B 63 13 93 87 20 3D B9 0B D1 BF 53
      00000090:    00 A5 B5 77 BF 46 79 3D B1 AA 30 FE DF D1 E6 A5
      [...]
      00000370:    E1 D5 58 16 BF D6 BF FB F6 E6 FB 23 D8 61 17 D2
      00000380:    47 44 1B C2 11 D0 78 19 9C 1F 83 40 BE 80 8B A6
      00000390:    E5 BE 09 2B 9E 08 1E 95 D4 A5 76 72 A0 79 70 A6
      000003A0:    1F EF 2F 4B 12 A0 F4 01 FA 30 B8 13 FE 7C D1 BF
      000003B0:    88 14 85 15 73 81 B8 48 9E C3 62 96 C6 EE 75 38
      000003C0:    0F B1 DA A1 B1 47 33 58 FD 87 AA 41 D5 DB A0 89
      000003D0:    F5 28 BD 5F 3B 41 B3 40 02 D9 45 D7 E0 C4 9E FA
      000003E0:    54 A4 EF B0 DA 40 49 F5F2 48 B3 F7 D4 6F EC 05
      000003F0:    A2 5B BE 0A 51 20 10 6B C2 1C 1E A2 5E FF 31 25
      00000400:    E0 79 CA 0F 7F FA 56 FD 89 C1 A8 0D A0 A3

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 1):
      00000:   7B B8 81 55 35 98 DE F5 34 FC AF 9B 77 A3 35 5B
      00010:   C3 BC A3 87 4D 67 40 F6 CB F5 C1 B6 D3 5C 65 ED

      seqnum:
      00000:   00 00 00 00 00 00 00 01

      nonce:
      00000:   71 2E 2F 11 CD 50 6E B8

      additional_data:
      00000:   17 03 03 04 09

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0409
    encrypted_record:        DC593FC6FAFC5191242B632E144504A2
                             61AEF332970FF8316FA4DE507BFB471E
                             A83C713FF950791078FD9A3178D02682
                             66E12BC970FFB1EE4A56600DF32ABF9F
                             A318FF45C91CDEF42E1C1D450059729B
                             1BB6925F773A1E8F304E7AB143F0FC16
                             EF16BC4E0DF60D76DE43390F9CD257DE
                             D256209B1675378FE6822CBB19A53620
                             BD5B240282CF4977F1C572AB3B1DD6CF
                             497F2757286B7E49CF80C7 [...]
                             EE2E29D3F79640D9CA3C35181B9CE939
                             CA16A862AC460424B6AEF6B89D533406
                             7724CCF2466A804F09FAB3EBE737F99C
                             6498EFF2379CAD6596C3C352F4426876
                             95ACBC4FB44B5D069FB66605E47945FE
                             2F11509FF7B5961BE8AB43EC2060D822
                             A994D97C59C8058C951708029AE0BEDA
                             8045ECA025FE02E6D2EFAF13202012E9
                             E34358DE79E561CCEC8F549E70073EE6
                             938F4A1AAE97465970D65260604C

    TLSCiphertext:
      00000000:   17 03 03 04 09 DC 59 3F C6 FA FC 51 91 24 2B 63
      00000010:   2E 14 45 04 A2 61 AE F3 32 97 0F F8 31 6F A4 DE
      00000020:   50 7B FB 47 1E A8 3C 71 3F F9 50 79 10 78 FD 9A
      00000030:   31 78 D0 26 82 66 E1 2B C9 70 FF B1 EE 4A 56 60
      00000040:   0D F3 2A BF 9F A3 18 FF 45 C9 1C DE F4 2E 1C 1D
      00000050:   45 00 59 72 9B 1B B6 92 5F 77 3A 1E 8F 30 4E 7A
      00000060:   B1 43 F0 FC 16 EF 16 BC 4E 0D F6 0D 76 DE 43 39
      00000070:   0F 9C D2 57 DE D2 56 20 9B 16 75 37 8F E6 82 2C
      00000080:   BB 19 A5 36 20 BD 5B 24 02 82 CF 49 77 F1 C5 72
      00000090:   AB 3B 1D D6 CF 49 7F 27 57 28 6B 7E 49 CF 80 C7
      [...]
      00000370:   EE 2E 29 D3 F7 96 40 D9 CA 3C 35 18 1B 9C E9 39
      00000380:   CA 16 A8 62 AC 46 04 24 B6 AE F6 B8 9D 53 34 06
      00000390:   77 24 CC F2 46 6A 80 4F 09 FA B3 EB E7 37 F9 9C
      000003A0:   64 98 EF F2 37 9C AD 65 96 C3 C3 52 F4 42 68 76
      000003B0:   95 AC BC 4F B4 4B 5D 06 9F B6 66 05 E4 79 45 FE
      000003C0:   2F 11 50 9F F7 B5 96 1B E8 AB 43 EC 20 60 D8 22
      000003D0:   A9 94 D9 7C 59 C8 05 8C 95 17 08 02 9A E0 BE DA
      000003E0:   80 45 EC A0 25 FE 02 E6 D2 EF AF 13 20 20 12 E9
      000003F0:   E3 43 58 DE 79 E5 61 CC EC 8F 54 9E 70 07 3E E6
      00000400:   93 8F 4A 1A AE 97 46 59 70 D6 52 60 60 4C

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 128):
      00000:   93 D5 D6 E1 03 6F DF B3 EF BF 31 E6 DA 5E EC E6
      00010:   85 17 1C 97 7F F9 CD 6C 3A 3F 67 C0 22 4A B6 EB

      seqnum:
      00000:   00 00 00 00 00 00 00 80
      nonce:
      00000:   71 2E 2F 11 CD 50 6E 39

      additional_data:
      00000:   17 03 03 04 09

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0409
    encrypted_record:        56A7E2F32541DB0EE1563F8CA79EB129
                             3192E2122BA8A89A6CF05B151D205AEC
                             EB60321D0F637A98880814BEF639FC08
                             A1E8222D95A54E5593F8BB9CF520D3FA
                             7D38D960E00665BB736A7AFF49D7A7BA
                             D092DDB1714655EDF1A9A24F4727DA7E
                             873135F2A0534FAF7825EA99401FE1F0
                             1E8C4246D2B55CEBE768FA205B3F7890
                             9827B912C6AA9FDDE3CFCA47F2D9E2E2
                             0FBEE9606D0E0105A7C97A [...]
                             A72D5F8E43ABC13984593F16DCECBE7B
                             26AF73FDC82D7BE1F913B846D2612531
                             BA0F05FF0C52DEFC8674AF3A1AE27393
                             FC092D45DCD0F71E2B54B60EC618C2A4
                             5BE72EC19B5FB263C2DC780FF3093FD5
                             D2F75185E437BE8BB3E5C26F9E0E71B3
                             C5D6CCA2E0D2F44BB1ACDA17B189F21E
                             C97C748502A2155E3ADC3CCC1BA14EEB
                             7CDAA018253FCB57D53A12F548C5456C
                             DDA00385EE1C0826AB58E964007C

    TLSCiphertext:
      00000000:   17 03 03 04 09 56 A7 E2 F3 25 41 DB 0E E1 56 3F
      00000010:   8C A7 9E B1 29 31 92 E2 12 2B A8 A8 9A 6C F0 5B
      00000020:   15 1D 20 5A EC EB 60 32 1D 0F 63 7A 98 88 08 14
      00000030:   BE F6 39 FC 08 A1 E8 22 2D 95 A5 4E 55 93 F8 BB
      00000040:   9C F5 20 D3 FA 7D 38 D9 60 E0 06 65 BB 73 6A 7A
      00000050:   FF 49 D7 A7 BA D0 92 DD B1 71 46 55 ED F1 A9 A2
      00000060:   4F 47 27 DA 7E 87 31 35 F2 A0 53 4F AF 78 25 EA
      00000070:   99 40 1F E1 F0 1E 8C 42 46 D2 B5 5C EB E7 68 FA
      00000080:   20 5B 3F 78 90 98 27 B9 12 C6 AA 9F DD E3 CF CA
      00000090:   47 F2 D9 E2 E2 0F BE E9 60 6D 0E 01 05 A7 C9 7A
      [...]
      00000370:   A7 2D 5F 8E 43 AB C1 39 84 59 3F 16 DC EC BE 7B
      00000380:   26 AF 73 FD C8 2D 7B E1 F9 13 B8 46 D2 61 25 31
      00000390:   BA 0F 05 FF 0C 52 DE FC 86 74 AF 3A 1A E2 73 93
      000003A0:   FC 09 2D 45 DC D0 F7 1E 2B 54 B6 0E C6 18 C2 A4
      000003B0:   5B E7 2E C1 9B 5F B2 63 C2 DC 78 0F F3 09 3F D5
      000003C0:   D2 F7 51 85 E4 37 BE 8B B3 E5 C2 6F 9E 0E 71 B3
      000003D0:   C5 D6 CC A2 E0 D2 F4 4B B1 AC DA 17 B1 89 F2 1E
      000003E0:   C9 7C 74 85 02 A2 15 5E 3A DC 3C CC 1B A1 4E EB
      000003F0:   7C DA A0 18 25 3F CB 57 D5 3A 12 F5 48 C5 45 6C
      00000400:  DD A0 03 85 EE 1C 08 26 AB 58 E9 64 00 7C

    ---------------------------Server---------------------------

    Application data:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

    Record payload protection:

      server_record_write_key = TLSTREE(server_write_key_ap, 129):
      00000:   93 D5 D6 E1 03 6F DF B3 EF BF 31 E6 DA 5E EC E6
      00010:   85 17 1C 97 7F F9 CD 6C 3A 3F 67 C0 22 4A B6 EB

      seqnum:
      00000:   00 00 00 00 00 00 00 81

      nonce:
      00000:   71 2E 2F 11 CD 50 6E 38

      additional_data:
      00000:   17 03 03 04 09

      TLSInnerPlaintext:
      00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      [...]
      000003F0:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      00000400:  17

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  0409
    encrypted_record:        EE73C4CAE69FD30BC4B3A66CA571CD9F
                             3C7AA2C2BA9F428A82249720F717738F
                             8C35AC7745B701F3B0CEE993EB2CFDAB
                             4468B22297A8286C2572DE366AC38B70
                             471B26A1EC4F19D68E7EDA0A231C3BD1
                             98013FA05BAC92E774A370EB10C0CBD9
                             15BACD0117A885804B9A475B44A6F3E8
                             7D7BCA40F3F52EF4AB624B6EDD3094F9
                             86269E409F8BB76CEB4BE26D4B1AF54C
                             0A14D41C291EB8E181F79A [...]
                             10C401A9423D02804B51DDBFE5925294
                             ADEE0067193FED8F66CBEED9475873B8
                             8A730496487E8E7F45FC05EEE9C628AF
                             E9236696F41A1505AA7392BF71C7EED3
                             78035013ADE1EF07DE5A0230669E133E
                             0D18B6C977A7FE94F4D22AB29CBAA6B5
                             CDDBF4B35598C0007F3BA69D3FA2730D
                             F51D867E1E47CFDE22CAEACD4C5AFD97
                             088AEB92D12CE3C685C4E517730B8339
                             4FC8514264E2F15E51CE439DED1D

    TLSCiphertext:
      00000000:   17 03 03 04 09 EE 73 C4 CA E6 9F D3 0B C4 B3 A6
      00000010:   6C A5 71 CD 9F 3C 7A A2 C2 BA 9F 42 8A 82 24 97
      00000020:   20 F7 17 73 8F 8C 35 AC 77 45 B7 01 F3 B0 CE E9
      00000030:   93 EB 2C FD AB 44 68 B2 22 97 A8 28 6C 25 72 DE
      00000040:   36 6A C3 8B 70 47 1B 26 A1 EC 4F 19 D6 8E 7E DA
      00000050:   0A 23 1C 3B D1 98 01 3F A0 5B AC 92 E7 74 A3 70
      00000060:   EB 10 C0 CB D9 15 BA CD 01 17 A8 85 80 4B 9A 47
      00000070:   5B 44 A6 F3 E8 7D 7B CA 40 F3 F5 2E F4 AB 62 4B
      00000080:   6E DD 30 94 F9 86 26 9E 40 9F 8B B7 6C EB 4B E2
      00000090:   6D 4B 1A F5 4C 0A 14 D4 1C 29 1E B8 E1 81 F7 9A
      [...]
      00000370:   10 C4 01 A9 42 3D 02 80 4B 51 DD BF E5 92 52 94
      00000380:   AD EE 00 67 19 3F ED 8F 66 CB EE D9 47 58 73 B8
      00000390:   8A 73 04 96 48 7E 8E 7F 45 FC 05 EE E9 C6 28 AF
      000003A0:   E9 23 66 96 F4 1A 15 05 AA 73 92 BF 71 C7 EE D3
      000003B0:   78 03 50 13 AD E1 EF 07 DE 5A 02 30 66 9E 13 3E
      000003C0:   0D 18 B6 C9 77 A7 FE 94 F4 D2 2A B2 9C BA A6 B5
      000003D0:   CD DB F4 B3 55 98 C0 00 7F 3B A6 9D 3F A2 73 0D
      000003E0:   F5 1D 86 7E 1E 47 CF DE 22 CA EA CD 4C 5A FD 97
      000003F0:   08 8A EB 92 D1 2C E3 C6 85 C4 E5 17 73 0B 83 39
      00000400:   4F C8 51 42 64 E2 F1 5E 51 CE 43 9D ED 1D

    ---------------------------Server---------------------------
    Alert message:
    level:                   01
    description:             00

    00000:   01 00

    Record payload protection:

     server_record_write_key = TLSTREE(server_write_key_ap, 130):
      00000:   93 D5 D6 E1 03 6F DF B3 EF BF 31 E6 DA 5E EC E6
      00010:   85 17 1C 97 7F F9 CD 6C 3A 3F 67 C0 22 4A B6 EB

      seqnum:
      00000:   00 00 00 00 00 00 00 82

      nonce:
      00000:   71 2E 2F 11 CD 50 6E 3B

      additional_data:
      00000:   17 03 03 00 0B

      TLSInnerPlaintext:
      00000:   01 00 15

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  000B
    encrypted_record:        447A3FAE8F86C135189B10

    TLSCiphertext:
      00000:   17 03 03 00 0B 44 7A 3F AE 8F 86 C1 35 18 9B 10

    ---------------------------Client---------------------------
    Alert message:
    level:                   01
    description:             00

    00000:   01 00

    Record payload protection:

      Derived #1 = Derive-Secret(HandshakeSecret, "derived", "") =
       HKDF-Expand-Label(HandshakeSecret, "derived", "", 32):
       00000:   BC 4D 6F E3 D9 43 78 21 1D 3D 64 1C 75 92 EB AA
       00010:   7A A2 96 47 9C 57 BD D1 E1 4C 7B 04 9F 6D F1 CD

      MainSecret = HKDF-Extract(Salt: Derived #1, IKM: 0^256):
      00000:   DB FF 82 86 2E 54 A1 41 3E 6C 2E D8 2C 6D A5 AF
      00010:   FD BF DE 12 30 2E 49 75 5B 61 F2 06 32 E1 0A 42

      HM2 = (FE 00 00 20 | Hash(ClientHello1), HelloRetryRequest,
         ClientHello2, ServerHello, EncryptedExtensions,
         Server Finished)

      TH2 = Transcript-Hash(HM2):
      00000:   53 06 24 EE 07 6F FF E1 04 DC 15 EB B4 2D 78 8F
      00010:   1E 4F EB 3E 8C 2D CF A5 CB 85 D7 2F 81 D0 6D 15

      client_application_traffic_secret (CATS):
      CATS = Derive-Secret(MainSecret, "c ap traffic", HM2) =
       HKDF-Expand-Label(MainSecret, "c ap traffic", TH2, 32):
       20 D9 85 D5 B8 4D 9D 8D 4E 5E CF CD BC DD 67 41
       55 F1 82 F7 28 7B 18 4D A5 53 42 5C 6C 64 57 83

      client_write_key_ap = HKDF-Expand-Label(CATS, "key", "", 32):
      00000:   EB D2 71 DE 19 FE E1 8B B1 99 8F 69 AF 5B 6A E1
      00010:   89 58 E8 D3 70 2F 12 FB B5 B0 3F 6F D6 91 FE FA

      client_write_iv_ap = HKDF-Expand-Label(CATS, "iv", "", 8):
      00000:   18 FB 03 8D BF 72 41 E6

      client_record_write_key = TLSTREE(client_write_key_ap, 0):
      00000:   86 2A 74 18 0B 4A E4 C2 D1 5F 4A 62 ED 8A 4A 75
      00010:   B0 8D 72 B0 46 AF DE CB 3A 8E F0 C2 67 F4 56 BD

      seqnum:
      00000:   00 00 00 00 00 00 00 00

      nonce:
      00000:   18 FB 03 8D BF 72 41 E6

      additional_data:
      00000:   17 03 03 00 0B

      TLSInnerPlaintext:
      00000:   01 00 15

    Record layer message:
    type:                    17
    legacy_record_version:   0303
    length:                  000B
    encrypted_record:        464AEEAD391D97987169F3

    TLSCiphertext:
      00000:   17 03 03 00 0B 46 4A EE AD 39 1D 97 98 71 69 F3

¶

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## Authors' Addresses