SshHmacCtx Struct Reference

Streaming HMAC-SHA2-256 context. More...

#include <ssh_hmac_sha256.h>

Public Attributes
SshSha256Ctx	inner
	Inner hash context (key XOR ipad prepended).
uint8_t	okey [64]
	Outer key block (key XOR opad), stored for final step.

Detailed Description

Streaming HMAC-SHA2-256 context.

For the packet MAC where data arrives in two separate pieces:

1. 4-byte big-endian sequence number
2. plaintext packet bytes

Usage: ssh_hmac_sha256_init(&ctx, key); ssh_hmac_sha256_update(&ctx, seq_bytes, 4); ssh_hmac_sha256_update(&ctx, packet, pkt_len); ssh_hmac_sha256_final(&ctx, mac_out);

Definition at line 64 of file ssh_hmac_sha256.h.

Member Data Documentation

inner

SshSha256Ctx SshHmacCtx::inner

Inner hash context (key XOR ipad prepended).

Definition at line 66 of file ssh_hmac_sha256.h.

Referenced by ssh_hmac_sha256_final(), ssh_hmac_sha256_init(), and ssh_hmac_sha256_update().

okey

uint8_t SshHmacCtx::okey[64]

Outer key block (key XOR opad), stored for final step.

Definition at line 67 of file ssh_hmac_sha256.h.

Referenced by ssh_hmac_sha256_final(), and ssh_hmac_sha256_init().

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The documentation for this struct was generated from the following file:

• src/network_drivers/presentation/ssh/crypto/ssh_hmac_sha256.h