hash_impl.h File Reference

#include "hash.h"
#include <stdlib.h>
#include <stdint.h>
#include <string.h>

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Macros
#define	Ch(x, y, z)   ((z) ^ ((x) & ((y) ^ (z))))
#define	Maj(x, y, z)   (((x) & (y)) | ((z) & ((x) | (y))))
#define	Sigma0(x)   (((x) >> 2 | (x) << 30) ^ ((x) >> 13 | (x) << 19) ^ ((x) >> 22 | (x) << 10))
#define	Sigma1(x)   (((x) >> 6 | (x) << 26) ^ ((x) >> 11 | (x) << 21) ^ ((x) >> 25 | (x) << 7))
#define	sigma0(x)   (((x) >> 7 | (x) << 25) ^ ((x) >> 18 | (x) << 14) ^ ((x) >> 3))
#define	sigma1(x)   (((x) >> 17 | (x) << 15) ^ ((x) >> 19 | (x) << 13) ^ ((x) >> 10))
#define	Round(a, b, c, d, e, f, g, h, k, w)
#define	BE32(p)   ((((p) & 0xFF) << 24) | (((p) & 0xFF00) << 8) | (((p) & 0xFF0000) >> 8) | (((p) & 0xFF000000) >> 24))

Functions
static void	secp256k1_sha256_initialize (secp256k1_sha256 *hash)
static void	secp256k1_sha256_transform (uint32_t *s, const uint32_t *chunk)
	Perform one SHA-256 transformation, processing 16 big endian 32-bit words. More...
static void	secp256k1_sha256_write (secp256k1_sha256 *hash, const unsigned char *data, size_t len)
static void	secp256k1_sha256_finalize (secp256k1_sha256 *hash, unsigned char *out32)
static void	secp256k1_hmac_sha256_initialize (secp256k1_hmac_sha256 *hash, const unsigned char *key, size_t keylen)
static void	secp256k1_hmac_sha256_write (secp256k1_hmac_sha256 *hash, const unsigned char *data, size_t size)
static void	secp256k1_hmac_sha256_finalize (secp256k1_hmac_sha256 *hash, unsigned char *out32)
static void	secp256k1_rfc6979_hmac_sha256_initialize (secp256k1_rfc6979_hmac_sha256 *rng, const unsigned char *key, size_t keylen)
static void	secp256k1_rfc6979_hmac_sha256_generate (secp256k1_rfc6979_hmac_sha256 *rng, unsigned char *out, size_t outlen)
static void	secp256k1_rfc6979_hmac_sha256_finalize (secp256k1_rfc6979_hmac_sha256 *rng)

Macro Definition Documentation

BE32

#define BE32

(

p

)

((((p) & 0xFF) << 24) | (((p) & 0xFF00) << 8) | (((p) & 0xFF0000) >> 8) | (((p) & 0xFF000000) >> 24))

Definition at line 33 of file hash_impl.h.

Referenced by secp256k1_sha256_finalize(), and secp256k1_sha256_transform().

Ch

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

Definition at line 16 of file hash_impl.h.

Maj

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

Definition at line 17 of file hash_impl.h.

Round

#define Round	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h,
			k,
			w
	)

Value:

do { \
    uint32_t t1 = (h) + Sigma1(e) + Ch((e), (f), (g)) + (k) + (w); \
    uint32_t t2 = Sigma0(a) + Maj((a), (b), (c)); \
    (d) += t1; \
    (h) = t1 + t2; \
} while(0)

Definition at line 23 of file hash_impl.h.

Referenced by secp256k1_sha256_transform().

Sigma0

#define Sigma0

(

x

)

(((x) >> 2 | (x) << 30) ^ ((x) >> 13 | (x) << 19) ^ ((x) >> 22 | (x) << 10))

Definition at line 18 of file hash_impl.h.

sigma0

#define sigma0

(

x

)

(((x) >> 7 | (x) << 25) ^ ((x) >> 18 | (x) << 14) ^ ((x) >> 3))

Definition at line 20 of file hash_impl.h.

Referenced by secp256k1_sha256_transform().

Sigma1

#define Sigma1

(

x

)

(((x) >> 6 | (x) << 26) ^ ((x) >> 11 | (x) << 21) ^ ((x) >> 25 | (x) << 7))

Definition at line 19 of file hash_impl.h.

sigma1

#define sigma1

(

x

)

(((x) >> 17 | (x) << 15) ^ ((x) >> 19 | (x) << 13) ^ ((x) >> 10))

Definition at line 21 of file hash_impl.h.

Referenced by secp256k1_sha256_transform().

Function Documentation

secp256k1_hmac_sha256_finalize()

static void secp256k1_hmac_sha256_finalize ( secp256k1_hmac_sha256 *  hash, unsigned char *  out32  )

static

Definition at line 197 of file hash_impl.h.

References secp256k1_hmac_sha256::inner, secp256k1_hmac_sha256::outer, secp256k1_sha256_finalize(), and secp256k1_sha256_write().

Referenced by secp256k1_rfc6979_hmac_sha256_generate(), and secp256k1_rfc6979_hmac_sha256_initialize().

secp256k1_hmac_sha256_initialize()

static void secp256k1_hmac_sha256_initialize ( secp256k1_hmac_sha256 *  hash, const unsigned char *  key, size_t  keylen  )

static

Definition at line 165 of file hash_impl.h.

References secp256k1_hmac_sha256::inner, memcpy(), secp256k1_hmac_sha256::outer, secp256k1_sha256_finalize(), secp256k1_sha256_initialize(), and secp256k1_sha256_write().

Referenced by secp256k1_rfc6979_hmac_sha256_generate(), and secp256k1_rfc6979_hmac_sha256_initialize().

secp256k1_hmac_sha256_write()

static void secp256k1_hmac_sha256_write ( secp256k1_hmac_sha256 *  hash, const unsigned char *  data, size_t  size  )

static

Definition at line 193 of file hash_impl.h.

References secp256k1_hmac_sha256::inner, and secp256k1_sha256_write().

Referenced by secp256k1_rfc6979_hmac_sha256_generate(), and secp256k1_rfc6979_hmac_sha256_initialize().

secp256k1_rfc6979_hmac_sha256_finalize()

static void secp256k1_rfc6979_hmac_sha256_finalize ( secp256k1_rfc6979_hmac_sha256 *  rng )

static

Definition at line 267 of file hash_impl.h.

References secp256k1_rfc6979_hmac_sha256::k, secp256k1_rfc6979_hmac_sha256::retry, and secp256k1_rfc6979_hmac_sha256::v.

secp256k1_rfc6979_hmac_sha256_generate()

static void secp256k1_rfc6979_hmac_sha256_generate ( secp256k1_rfc6979_hmac_sha256 *  rng, unsigned char *  out, size_t  outlen  )

static

Definition at line 236 of file hash_impl.h.

References secp256k1_rfc6979_hmac_sha256::k, memcpy(), secp256k1_rfc6979_hmac_sha256::retry, secp256k1_hmac_sha256_finalize(), secp256k1_hmac_sha256_initialize(), secp256k1_hmac_sha256_write(), and secp256k1_rfc6979_hmac_sha256::v.

secp256k1_rfc6979_hmac_sha256_initialize()

static void secp256k1_rfc6979_hmac_sha256_initialize ( secp256k1_rfc6979_hmac_sha256 *  rng, const unsigned char *  key, size_t  keylen  )

static

Definition at line 206 of file hash_impl.h.

References secp256k1_rfc6979_hmac_sha256::k, secp256k1_rfc6979_hmac_sha256::retry, secp256k1_hmac_sha256_finalize(), secp256k1_hmac_sha256_initialize(), secp256k1_hmac_sha256_write(), and secp256k1_rfc6979_hmac_sha256::v.

secp256k1_sha256_finalize()

static void secp256k1_sha256_finalize ( secp256k1_sha256 *  hash, unsigned char *  out32  )

static

Definition at line 149 of file hash_impl.h.

References BE32, secp256k1_sha256::bytes, memcpy(), secp256k1_sha256::s, and secp256k1_sha256_write().

Referenced by secp256k1_hmac_sha256_finalize(), and secp256k1_hmac_sha256_initialize().

secp256k1_sha256_initialize()

static void secp256k1_sha256_initialize ( secp256k1_sha256 *  hash )

static

Definition at line 36 of file hash_impl.h.

References secp256k1_sha256::bytes, and secp256k1_sha256::s.

Referenced by secp256k1_hmac_sha256_initialize().

secp256k1_sha256_transform()

static void secp256k1_sha256_transform ( uint32_t *  s, const uint32_t *  chunk  )

static

Perform one SHA-256 transformation, processing 16 big endian 32-bit words.

Definition at line 49 of file hash_impl.h.

References BE32, Round, sigma0, and sigma1.

Referenced by secp256k1_sha256_write().

secp256k1_sha256_write()

static void secp256k1_sha256_write ( secp256k1_sha256 *  hash, const unsigned char *  data, size_t  len  )

static

Definition at line 131 of file hash_impl.h.

References secp256k1_sha256::buf, secp256k1_sha256::bytes, memcpy(), secp256k1_sha256::s, and secp256k1_sha256_transform().

Referenced by secp256k1_hmac_sha256_finalize(), secp256k1_hmac_sha256_initialize(), secp256k1_hmac_sha256_write(), and secp256k1_sha256_finalize().