sha1.c File Reference

#include "sha1.h"
#include <assert.h>
#include <string.h>

Go to the source code of this file.

Data Structures
union	CHAR64LONG16

Macros
#define	SHA1HANDSOFF   /* Copies data before messing with it. */
#define	_DIAGASSERT(cond)   assert(cond)
#define	rol(value, bits)   (((value) << (bits)) | ((value) >> (32 - (bits))))
#define	blk0(i)
#define	blk(i)
#define	R0(v, w, x, y, z, i)   z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
#define	R1(v, w, x, y, z, i)   z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
#define	R2(v, w, x, y, z, i)   z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
#define	R3(v, w, x, y, z, i)   z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
#define	R4(v, w, x, y, z, i)   z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);

Functions
void	SHA1_Transform (uint32_t state[5], const uint8_t buffer[64])
int	SHA1_Init (SHA1_CTX *context)
void	SHA1_Update (SHA1_CTX *context, const uint8_t *data, size_t len)
int	SHA1_Finish (SHA1_CTX *context, uint8_t digest[20])

Macro Definition Documentation

_DIAGASSERT

#define _DIAGASSERT

(

cond

)

assert(cond)

Definition at line 35 of file sha1.c.

Referenced by SHA1_Finish(), SHA1_Init(), SHA1_Transform(), and SHA1_Update().

blk

#define blk

(

i

)

Value:

(block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
    ^block->l[(i+2)&15]^block->l[i&15],1))

Definition at line 58 of file sha1.c.

blk0

#define blk0

(

i

)

Value:

(block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
    |(rol(block->l[i],8)&0x00FF00FF))

Definition at line 53 of file sha1.c.

R0

#define R0	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);

Definition at line 64 of file sha1.c.

Referenced by SHA1_Transform().

R1

#define R1	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);

Definition at line 65 of file sha1.c.

Referenced by SHA1_Transform().

R2

#define R2	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);

Definition at line 66 of file sha1.c.

Referenced by SHA1_Transform().

R3

#define R3	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);

Definition at line 67 of file sha1.c.

Referenced by SHA1_Transform().

R4

#define R4	(		v,
			w,
			x,
			y,
			z,
			i
	)		z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);

Definition at line 68 of file sha1.c.

Referenced by SHA1_Transform().

rol

#define rol	(		value,
			bits
	)		(((value) << (bits)) | ((value) >> (32 - (bits))))

Definition at line 46 of file sha1.c.

SHA1HANDSOFF

#define SHA1HANDSOFF   /* Copies data before messing with it. */

Definition at line 22 of file sha1.c.

Function Documentation

SHA1_Finish()

int SHA1_Finish	(	SHA1_CTX *	context,
		uint8_t	digest[20]
	)

Definition at line 248 of file sha1.c.

References _DIAGASSERT, SHA1_CTX::count, SHA1_Update(), and SHA1_CTX::state.

SHA1_Init()

int SHA1_Init

(

SHA1_CTX *

context

)

Definition at line 202 of file sha1.c.

References _DIAGASSERT, SHA1_CTX::count, and SHA1_CTX::state.

SHA1_Transform()

void SHA1_Transform	(	uint32_t	state[5],
		const uint8_t	buffer[64]
	)

Definition at line 132 of file sha1.c.

References _DIAGASSERT, R0, R1, R2, R3, and R4.

Referenced by SHA1_Update().

SHA1_Update()

void SHA1_Update	(	SHA1_CTX *	context,
		const uint8_t *	data,
		size_t	len
	)

Definition at line 221 of file sha1.c.

References _DIAGASSERT, SHA1_CTX::buffer, SHA1_CTX::count, len, SHA1_Transform(), and SHA1_CTX::state.

Referenced by SHA1_Finish().