pc_hmac_sha256_ctx Struct Reference

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

#include <hmac_sha256.h>

Public Attributes
pc_sha256_ctx	inner
	Inner hash context (key XOR ipad prepended).
uint8_t	okey [64]
	Outer key block (key XOR opad), stored for the final step.

Detailed Description

Streaming HMAC-SHA2-256 context.

For MACs assembled from separate pieces - e.g. the SSH packet MAC over (uint32_be(seq_num) || plaintext_packet):

pc_hmac_sha256_init(&ctx, key, key_len); pc_hmac_sha256_update(&ctx, seq_bytes, 4); pc_hmac_sha256_update(&ctx, packet, pkt_len); pc_hmac_sha256_final(&ctx, mac_out);

Definition at line 56 of file hmac_sha256.h.

Member Data Documentation

inner

pc_sha256_ctx pc_hmac_sha256_ctx::inner

Inner hash context (key XOR ipad prepended).

Definition at line 58 of file hmac_sha256.h.

Referenced by pc_hmac_sha256_final(), pc_hmac_sha256_init(), and pc_hmac_sha256_update().

okey

uint8_t pc_hmac_sha256_ctx::okey[64]

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

Definition at line 59 of file hmac_sha256.h.

Referenced by pc_hmac_sha256_final(), and pc_hmac_sha256_init().

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

• src/crypto/mac/hmac_sha256.h