sha-1.h

来自「SHA-1加密算法源代码.具有完整的加解密过程」· C头文件 代码 · 共 43 行

#ifndef _SHA1_H_
#define _SHA1_H_

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include "stdafx.h"

#undef BIG_ENDIAN_HOST
typedef unsigned int u32;

/****************
 * Rotate a 32 bit integer by n bytes
 ****************/
#if defined(__GNUC__) && defined(__i386__)
static inline u32 rol( u32 x, int n)
{
	__asm__("roll %%cl,%0"
            :"=r" (x)
            :"0" (x),"c" (n));
	return x;
}
#else
#define rol(x,n) ( ((x) << (n)) | ((x) >> (32-(n))) )
#endif


typedef struct {
    u32  h0,h1,h2,h3,h4;
    u32  nblocks;
    unsigned char buf[64];
    int  count;
} SHA1_CONTEXT;


void sha1_init( SHA1_CONTEXT *hd );
void transform( SHA1_CONTEXT *hd, unsigned char *data );
void sha1_write( SHA1_CONTEXT *hd, unsigned char *inbuf, size_t inlen);
void sha1_final(SHA1_CONTEXT *hd);
 
#endif