sha1c.c File Reference

Local copy of the public domain SHA-1 library code by David Ireland. More...

#include "tsk_base_i.h"

Macros
#define	expand(W, i)
#define	f1(x, y, z)
#define	f2(x, y, z)
#define	f3(x, y, z)
#define	f4(x, y, z)
#define	h0init   0x67452301UL
#define	h1init   0xEFCDAB89UL
#define	h2init   0x98BADCFEUL
#define	h3init   0x10325476UL
#define	h4init   0xC3D2E1F0UL
#define	K1   0x5A827999UL /* Rounds 0-19 */
#define	K2   0x6ED9EBA1UL /* Rounds 20-39 */
#define	K3   0x8F1BBCDCUL /* Rounds 40-59 */
#define	K4   0xCA62C1D6UL /* Rounds 60-79 */
#define	ROTL(n, X)
#define	SHS_DATASIZE   64
#define	SHS_DIGESTSIZE   20
#define	subRound(a, b, c, d, e, f, k, data)

Functions
void	TSK_SHA_Final (TSK_SHA_CTX *shsInfo, BYTE *output)
	Calculate the hash of the data added to the context.
void	TSK_SHA_Init (TSK_SHA_CTX *shsInfo)
	Initialize a SHA-1 context so that data can be added to it.
void	TSK_SHA_Update (TSK_SHA_CTX *shsInfo, const BYTE *buffer, unsigned int count)
	Add data to an initialized SHA-1 context.

Detailed Description

Local copy of the public domain SHA-1 library code by David Ireland.

Macro Definition Documentation

expand

#define expand	(		W,
			i )

Value:

( W[ i & 15 ] = ROTL( 1, ( W[ i & 15 ] ^ W[ (i - 14) & 15 ] ^ \
W[ (i - 8) & 15 ] ^ W[ (i - 3) & 15 ] ) ) )

f1

#define f1	(		x,
			y,
			z )

Value:

( z ^ ( x & ( y ^ z ) ) )   /* Rounds  0-19 */

f2

#define f2	(		x,
			y,
			z )

Value:

( x ^ y ^ z )       /* Rounds 20-39 */

f3

#define f3	(		x,
			y,
			z )

Value:

( ( x & y ) | ( z & ( x | y ) ) )   /* Rounds 40-59 */

f4

#define f4	(		x,
			y,
			z )

Value:

( x ^ y ^ z )       /* Rounds 60-79 */

ROTL

#define ROTL	(		n,
			X )

Value:

( ( ( X ) << n ) | ( ( X ) >> ( 32 - n ) ) )

subRound

#define subRound	(		a,
			b,
			c,
			d,
			e,
			f,
			k,
			data )

Value:

( e += ROTL( 5, a ) + f( b, c, d ) + k + data, b = ROTL( 30, b ) )