hmac_sha512.cpp File Reference

HMAC-SHA2-512 implementation (RFC 2104). See hmac_sha512.h. More...

#include "crypto/mac/hmac_sha512.h"
#include "crypto/crypto_opt.h"

Go to the source code of this file.

Namespaces
namespace	PC_CRYPTO_HOT

Functions
void	PC_CRYPTO_HOT::build_key_block (const uint8_t *key, size_t key_len, uint8_t block[PC_SHA512_BLOCK_LEN], uint8_t pad_byte)
void	pc_hmac_sha512_init (pc_hmac_sha512_ctx *ctx, const uint8_t *key, size_t key_len)
	Begin an HMAC-SHA2-512 over key (keys > 128 bytes are pre-hashed per RFC 2104).
void	pc_hmac_sha512_update (pc_hmac_sha512_ctx *ctx, const uint8_t *data, size_t len)
	Feed len message bytes.
void	pc_hmac_sha512_final (pc_hmac_sha512_ctx *ctx, uint8_t mac[PC_HMAC_SHA512_LEN])
	Finish, writing the 64-byte MAC.
void	pc_hmac_sha512 (const uint8_t *key, size_t key_len, const uint8_t *data, size_t len, uint8_t mac[PC_HMAC_SHA512_LEN])
	One-shot HMAC-SHA2-512 over a single buffer.

Detailed Description

HMAC-SHA2-512 implementation (RFC 2104). See hmac_sha512.h.

HMAC(K, m) = H((K XOR opad) || H((K XOR ipad) || m)), H = SHA-512, block = 128 bytes, ipad = 0x36 repeated, opad = 0x5c repeated.

Definition in file hmac_sha512.cpp.

Function Documentation

pc_hmac_sha512_init()

void pc_hmac_sha512_init	(	pc_hmac_sha512_ctx *	ctx,
		const uint8_t *	key,
		size_t	key_len
	)

Begin an HMAC-SHA2-512 over key (keys > 128 bytes are pre-hashed per RFC 2104).

Definition at line 40 of file hmac_sha512.cpp.

References pc_hmac_sha512_ctx::inner, pc_hmac_sha512_ctx::okey, PC_SHA512_BLOCK_LEN, pc_sha512_init(), and pc_sha512_update().

Referenced by pc_hmac_sha512().

pc_hmac_sha512_update()

void pc_hmac_sha512_update	(	pc_hmac_sha512_ctx *	ctx,
		const uint8_t *	data,
		size_t	len
	)

Feed len message bytes.

Definition at line 49 of file hmac_sha512.cpp.

References pc_hmac_sha512_ctx::inner, and pc_sha512_update().

Referenced by pc_hmac_sha512().

pc_hmac_sha512_final()

void pc_hmac_sha512_final	(	pc_hmac_sha512_ctx *	ctx,
		uint8_t	mac[PC_HMAC_SHA512_LEN]
	)

Finish, writing the 64-byte MAC.

Definition at line 54 of file hmac_sha512.cpp.

References pc_hmac_sha512_ctx::inner, pc_hmac_sha512_ctx::okey, PC_SHA512_BLOCK_LEN, PC_SHA512_DIGEST_LEN, pc_sha512_final(), pc_sha512_init(), and pc_sha512_update().

Referenced by pc_hmac_sha512().

pc_hmac_sha512()

void pc_hmac_sha512	(	const uint8_t *	key,
		size_t	key_len,
		const uint8_t *	data,
		size_t	len,
		uint8_t	mac[PC_HMAC_SHA512_LEN]
	)

One-shot HMAC-SHA2-512 over a single buffer.

Definition at line 65 of file hmac_sha512.cpp.

References pc_hmac_sha512_final(), pc_hmac_sha512_init(), and pc_hmac_sha512_update().