Common definitions for the SHA-224/256 hash functions. More...

Detailed Description

Common definitions for the SHA-224/256 hash functions.

Author: Colin Percival; Christian Mehlis; Rene Kijewski; Hermann Lelong; Peter Kietzmann

Definition in file sha2xx_common.h.

#include <string.h>
#include <stdint.h>

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Data Structures
struct	sha2xx_context_t
	Structure to hold the SHA-2XX context. More...

Functions
void	sha2xx_pad (sha2xx_context_t *ctx)
	SHA-2XX initialization. More...

void	sha2xx_update (sha2xx_context_t ctx, const void data, size_t len)
	Add bytes into the hash. More...

void	sha2xx_final (sha2xx_context_t ctx, void digest, size_t dig_len)
	SHA-2XX finalization. More...

Variables
static const uint32_t	K [64]
	SHA-224 and SHA-256 Constants. More...

#define	Ch(x, y, z) ((x & (y ^ z)) ^ z)
	Elementary functions used by SHA2XX.

#define	Maj(x, y, z) ((x & (y \| z)) \| (y & z))

#define	SHR(x, n) (x >> n)

#define	ROTR(x, n) ((x >> n) \| (x << (32 - n)))

#define	S0(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))

#define	S1(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))

#define	s0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3))

#define	s1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10))

Data Structures