sha256.c File Reference

#include <openssl/sha.h>
#include <string.h>
#include <openssl/mem.h>
#include "../../internal.h"
#include "../digest/md32_common.h"
#include "internal.h"

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Macros
#define	Ch(x, y, z)   (((x) & (y)) ^ ((~(x)) & (z)))
#define	Maj(x, y, z)   (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#define	ROUND_00_15(i, a, b, c, d, e, f, g, h)
#define	ROUND_16_63(i, a, b, c, d, e, f, g, h, X)
#define	Sigma0(x)
#define	sigma0(x)   (CRYPTO_rotr_u32((x), 7) ^ CRYPTO_rotr_u32((x), 18) ^ ((x) >> 3))
#define	Sigma1(x)
#define	sigma1(x)   (CRYPTO_rotr_u32((x), 17) ^ CRYPTO_rotr_u32((x), 19) ^ ((x) >> 10))

Functions
uint8_t *	SHA224 (const uint8_t *data, size_t len, uint8_t out[SHA224_DIGEST_LENGTH])
int	SHA224_Final (uint8_t out[SHA224_DIGEST_LENGTH], SHA256_CTX *ctx)
int	SHA224_Init (SHA256_CTX *sha)
int	SHA224_Update (SHA256_CTX *ctx, const void *data, size_t len)
uint8_t *	SHA256 (const uint8_t *data, size_t len, uint8_t out[SHA256_DIGEST_LENGTH])
static void	sha256_block_data_order (uint32_t *state, const uint8_t *in, size_t num)
int	SHA256_Final (uint8_t out[SHA256_DIGEST_LENGTH], SHA256_CTX *c)
static int	sha256_final_impl (uint8_t *out, SHA256_CTX *c)
int	SHA256_Init (SHA256_CTX *sha)
void	SHA256_Transform (SHA256_CTX *c, const uint8_t data[SHA256_CBLOCK])
void	SHA256_TransformBlocks (uint32_t state[8], const uint8_t *data, size_t num_blocks)
int	SHA256_Update (SHA256_CTX *c, const void *data, size_t len)

Variables
static const uint32_t	K256 [64]

Macro Definition Documentation

Ch

#define Ch	(		x,
			y,
			z
	)		(((x) & (y)) ^ ((~(x)) & (z)))

Definition at line 199 of file sha256.c.

Maj

#define Maj	(		x,
			y,
			z
	)		(((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))

Definition at line 200 of file sha256.c.

ROUND_00_15

#define ROUND_00_15	(		i,
			a,
			b,
			c,
			d,
			e,
			f,
			g,
			h
	)

Value:

  do {                                           \
    T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i]; \
    h = Sigma0(a) + Maj(a, b, c);                \
    d += T1;                                     \
    h += T1;                                     \
  } while (0)

Definition at line 202 of file sha256.c.

ROUND_16_63

#define ROUND_16_63	(		i,
			a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			X
	)

Value:

  do {                                                 \
    s0 = X[(i + 1) & 0x0f];                            \
    s0 = sigma0(s0);                                   \
    s1 = X[(i + 14) & 0x0f];                           \
    s1 = sigma1(s1);                                   \
    T1 = X[(i) & 0x0f] += s0 + s1 + X[(i + 9) & 0x0f]; \
    ROUND_00_15(i, a, b, c, d, e, f, g, h);            \
  } while (0)

Definition at line 210 of file sha256.c.

Sigma0

#define Sigma0

(

x

)

Value:

  (CRYPTO_rotr_u32((x), 2) ^ CRYPTO_rotr_u32((x), 13) ^ \
   CRYPTO_rotr_u32((x), 22))

Definition at line 188 of file sha256.c.

sigma0

#define sigma0

(

x

)

(CRYPTO_rotr_u32((x), 7) ^ CRYPTO_rotr_u32((x), 18) ^ ((x) >> 3))

Definition at line 194 of file sha256.c.

Sigma1

#define Sigma1

(

x

)

Value:

  (CRYPTO_rotr_u32((x), 6) ^ CRYPTO_rotr_u32((x), 11) ^ \
   CRYPTO_rotr_u32((x), 25))

Definition at line 191 of file sha256.c.

sigma1

#define sigma1

(

x

)

(CRYPTO_rotr_u32((x), 17) ^ CRYPTO_rotr_u32((x), 19) ^ ((x) >> 10))

Definition at line 196 of file sha256.c.

Function Documentation

SHA224()

uint8_t* SHA224	(	const uint8_t *	data,
		size_t	len,
		uint8_t	out[SHA224_DIGEST_LENGTH]
	)

Definition at line 96 of file sha256.c.

SHA224_Final()

int SHA224_Final	(	uint8_t	out[SHA224_DIGEST_LENGTH],
		SHA256_CTX *	ctx
	)

Definition at line 164 of file sha256.c.

SHA224_Init()

int SHA224_Init

(

SHA256_CTX *

sha

)

Definition at line 68 of file sha256.c.

SHA224_Update()

int SHA224_Update	(	SHA256_CTX *	ctx,
		const void *	data,
		size_t	len
	)

Definition at line 131 of file sha256.c.

SHA256()

uint8_t* SHA256	(	const uint8_t *	data,
		size_t	len,
		uint8_t	out[SHA256_DIGEST_LENGTH]
	)

Definition at line 106 of file sha256.c.

sha256_block_data_order()

static void sha256_block_data_order ( uint32_t *  state, const uint8_t *  in, size_t  num  )

static

Definition at line 220 of file sha256.c.

SHA256_Final()

int SHA256_Final	(	uint8_t	out[SHA256_DIGEST_LENGTH],
		SHA256_CTX *	c
	)

Definition at line 156 of file sha256.c.

sha256_final_impl()

static int sha256_final_impl ( uint8_t *  out, SHA256_CTX *  c  )

static

Definition at line 135 of file sha256.c.

SHA256_Init()

int SHA256_Init

(

SHA256_CTX *

sha

)

Definition at line 82 of file sha256.c.

SHA256_Transform()

void SHA256_Transform	(	SHA256_CTX *	c,
		const uint8_t	data[SHA256_CBLOCK]
	)

Definition at line 121 of file sha256.c.

SHA256_TransformBlocks()

void SHA256_TransformBlocks	(	uint32_t	state[8],
		const uint8_t *	data,
		size_t	num_blocks
	)

Definition at line 309 of file sha256.c.

SHA256_Update()

int SHA256_Update	(	SHA256_CTX *	c,
		const void *	data,
		size_t	len
	)

Definition at line 125 of file sha256.c.

Variable Documentation

K256

const uint32_t K256[64]

static

Initial value:

= {
    0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
    0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
    0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
    0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
    0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
    0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
    0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
    0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
    0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
    0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
    0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
    0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
    0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL}

Definition at line 172 of file sha256.c.