sha2_256.64.c File Reference

SHA-256 implementation based on FIPS 180-4 (Federal Information Processing Standards Publication 180-4). More...

#include <sha2.h>
#include <memory.h>
#include <utils.h>

Classes
struct	sha256_ctx_t

Macros
#define	CH(x, y, z)
#define	MAJ(x, y, z)
#define	EP0(x)
#define	EP1(x)
#define	SIG0(x)
#define	SIG1(x)

Typedefs
typedef struct sha256_ctx_t	sha256_ctx_t

Functions
	MODULE ("turnstone.lib.crypto")
void	sha256_transform (sha256_ctx_t *ctx, const uint8_t *data)
uint8_t *	sha256_hash (uint8_t *data, size_t length)
sha256_ctx_t *	sha256_init (void)
int8_t	sha256_update (sha256_ctx_t *ctx, const uint8_t *data, size_t len)
uint8_t *	sha256_final (sha256_ctx_t *ctx)
sha224_ctx_t *	sha224_init (void)
int8_t	sha224_update (sha224_ctx_t *ctx, const uint8_t *data, size_t len)
uint8_t *	sha224_final (sha224_ctx_t *ctx)
uint8_t *	sha224_hash (uint8_t *data, size_t length)

Variables
static const uint32_t	sha256_k [64]

Detailed Description

SHA-256 implementation based on FIPS 180-4 (Federal Information Processing Standards Publication 180-4).

This work is licensed under TURNSTONE OS Public License. Please read and understand latest version of Licence.

Macro Definition Documentation

CH

#define CH	(		x,
			y,
			z )

Value:

(((x) & (y)) ^ (~(x) & (z)))

EP0

#define EP0

(

x

)

Value:

(ROTRIGHT32(x, 2) ^ ROTRIGHT32(x, 13) ^ ROTRIGHT32(x, 22))

EP1

#define EP1

(

x

)

Value:

(ROTRIGHT32(x, 6) ^ ROTRIGHT32(x, 11) ^ ROTRIGHT32(x, 25))

MAJ

#define MAJ	(		x,
			y,
			z )

Value:

(((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))

SIG0

#define SIG0

(

x

)

Value:

(ROTRIGHT32(x, 7) ^ ROTRIGHT32(x, 18) ^ ((x) >> 3))

SIG1

#define SIG1

(

x

)

Value:

(ROTRIGHT32(x, 17) ^ ROTRIGHT32(x, 19) ^ ((x) >> 10))

Variable Documentation

sha256_k

const uint32_t sha256_k[64]

static

Initial value:

= {
    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
}