sha256-internal.c File Reference

#include "includes.h"
#include "common.h"
#include "sha256.h"
#include "crypto.h"

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Classes
struct	sha256_state
Defines
#define	block_size   64
#define	Ch(x, y, z)   (z ^ (x & (y ^ z)))
#define	Gamma0(x)   (S(x, 7) ^ S(x, 18) ^ R(x, 3))
#define	Gamma1(x)   (S(x, 17) ^ S(x, 19) ^ R(x, 10))
#define	Maj(x, y, z)   (((x | y) & z) | (x & y))
#define	MIN(x, y)   (((x) < (y)) ? (x) : (y))
#define	R(x, n)   (((x)&0xFFFFFFFFUL)>>(n))
#define	RND(a, b, c, d, e, f, g, h, i)
#define	RORc(x, y)
#define	S(x, n)   RORc((x), (n))
#define	Sigma0(x)   (S(x, 2) ^ S(x, 13) ^ S(x, 22))
#define	Sigma1(x)   (S(x, 6) ^ S(x, 11) ^ S(x, 25))
Functions
static int	sha256_compress (struct sha256_state *md, unsigned char *buf)
static int	sha256_done (struct sha256_state *md, unsigned char *out)
static void	sha256_init (struct sha256_state *md)
static int	sha256_process (struct sha256_state *md, const unsigned char *in, unsigned long inlen)
int	sha256_vector (size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
Variables
static const unsigned long	K [64]

---

Define Documentation

#define block_size   64

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

Definition at line 84 of file sha256-internal.c.

#define Gamma0

(

x

)

(S(x, 7) ^ S(x, 18) ^ R(x, 3))

Definition at line 90 of file sha256-internal.c.

#define Gamma1

(

x

)

(S(x, 17) ^ S(x, 19) ^ R(x, 10))

Definition at line 91 of file sha256-internal.c.

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

Definition at line 85 of file sha256-internal.c.

#define MIN	(	x,
		y		)	(((x) < (y)) ? (x) : (y))

Definition at line 93 of file sha256-internal.c.

#define R	(	x,
		n		)	(((x)&0xFFFFFFFFUL)>>(n))

Definition at line 87 of file sha256-internal.c.

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

Value:

t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
        t1 = Sigma0(a) + Maj(a, b, c);                  \
        d += t0;                                        \
        h  = t0 + t1;

#define RORc	(	x,
		y		)

Value:

( ((((unsigned long) (x) & 0xFFFFFFFFUL) >> (unsigned long) ((y) & 31)) | \
   ((unsigned long) (x) << (unsigned long) (32 - ((y) & 31)))) & 0xFFFFFFFFUL)

Definition at line 81 of file sha256-internal.c.

#define S	(	x,
		n		)	RORc((x), (n))

Definition at line 86 of file sha256-internal.c.

#define Sigma0

(

x

)

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

Definition at line 88 of file sha256-internal.c.

#define Sigma1

(

x

)

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

Definition at line 89 of file sha256-internal.c.

---

Function Documentation

static int sha256_compress	(	struct sha256_state *	md,
		unsigned char *	buf
	)			[static]

Definition at line 97 of file sha256-internal.c.

static int sha256_done	(	struct sha256_state *	md,
		unsigned char *	out
	)			[static]

Terminate the hash to get the digest

Parameters:

	md	The hash state
	out	[out] The destination of the hash (32 bytes)

Returns:

CRYPT_OK if successful

Definition at line 202 of file sha256-internal.c.

static void sha256_init

(

struct sha256_state *

md

)

[static]

Definition at line 140 of file sha256-internal.c.

static int sha256_process	(	struct sha256_state *	md,
		const unsigned char *	in,
		unsigned long	inlen
	)			[static]

Process a block of memory though the hash

Parameters:

	md	The hash state
	in	The data to hash
	inlen	The length of the data (octets)

Returns:

CRYPT_OK if successful

Definition at line 161 of file sha256-internal.c.

int sha256_vector	(	size_t	num_elem,
		const u8 *	addr[],
		const size_t *	len,
		u8 *	mac
	)

sha256_vector - SHA256 hash for data vector : Number of elements in the data vector : Pointers to the data areas : Lengths of the data blocks : Buffer for the hash Returns: 0 on success, -1 of failure

Definition at line 41 of file sha256-internal.c.

---

Variable Documentation

const unsigned long K[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 63 of file sha256-internal.c.