什么是sm3，是一种类似于sha256的哈希算法，是咱们国家的哈希标准算法；
最近在使用sm3算法时，同样的一份数据，调用同样的sm3接口，发现得到的结果是不一样的；
那么在应用过的过程中，如果同样的算法出的结果不一样，那验证签名业务就会不过，出问题；
最后发现是sm3算法在内部使用了unsigned long,
这里要注意 long, 在 windows64平台下占用4个字节 ；
而long, 在linux64平台下占用8个字节；
这种差异直接导致了windows和linux结果的差异；
原sm3.cpp 中使用了 unsigned long ，如下
#ifndef GET_ULONG_BE
#define GET_ULONG_BE(n,b,i) \
{ \
(n) = ( (unsigned long) (b)[(i) ] << 24 ) \
| ( (unsigned long) (b)[(i) + 1] << 16 ) \
| ( (unsigned long) (b)[(i) + 2] << 8 ) \
| ( (unsigned long) (b)[(i) + 3] ); \
}
#endif
//解决方式就是，修改sm3.cpp，将所有unsigned long 改成 unsigned int;
这样即支持linux和windows平台就保持一致了；
修改后的源码
sm3.h
/**
* \file sm3.h
* thanks to Xyssl
* SM3 standards:http://www.oscca.gov.cn/News/201012/News_1199.htm
* author:goldboar
* email:[email protected]
* 2011-10-26
*/
#ifndef XYSSL_SM3_H
#define XYSSL_SM3_H /**
* \brief SM3 context structure
*/
typedef struct
{
unsigned long total[2]; /*!< number of bytes processed */
unsigned long state[8]; /*!< intermediate digest state */
unsigned char buffer[64]; /*!< data block being processed */ unsigned char ipad[64]; /*!< HMAC: inner padding */
unsigned char opad[64]; /*!< HMAC: outer padding */ }
sm3_context; #ifdef __cplusplus
extern "C" {
#endif /**
* \brief SM3 context setup
*
* \param ctx context to be initialized
*/
void sm3_starts( sm3_context *ctx ); /**
* \brief SM3 process buffer
*
* \param ctx SM3 context
* \param input buffer holding the data
* \param ilen length of the input data
*/
void sm3_update( sm3_context *ctx, unsigned char *input, int ilen ); /**
* \brief SM3 final digest
*
* \param ctx SM3 context
*/
void sm3_finish( sm3_context *ctx, unsigned char output[32] ); /**
* \brief Output = SM3( input buffer )
*
* \param input buffer holding the data
* \param ilen length of the input data
* \param output SM3 checksum result
*/
void sm3( unsigned char *input, int ilen,
unsigned char output[32]); /**
* \brief Output = SM3( file contents )
*
* \param path input file name
* \param output SM3 checksum result
*
* \return 0 if successful, 1 if fopen failed,
* or 2 if fread failed
*/
int sm3_file( char *path, unsigned char output[32] ); /**
* \brief SM3 HMAC context setup
*
* \param ctx HMAC context to be initialized
* \param key HMAC secret key
* \param keylen length of the HMAC key
*/
void sm3_hmac_starts( sm3_context *ctx, unsigned char *key, int keylen); /**
* \brief SM3 HMAC process buffer
*
* \param ctx HMAC context
* \param input buffer holding the data
* \param ilen length of the input data
*/
void sm3_hmac_update( sm3_context *ctx, unsigned char *input, int ilen ); /**
* \brief SM3 HMAC final digest
*
* \param ctx HMAC context
* \param output SM3 HMAC checksum result
*/
void sm3_hmac_finish( sm3_context *ctx, unsigned char output[32] ); /**
* \brief Output = HMAC-SM3( hmac key, input buffer )
*
* \param key HMAC secret key
* \param keylen length of the HMAC key
* \param input buffer holding the data
* \param ilen length of the input data
* \param output HMAC-SM3 result
*/
void sm3_hmac( unsigned char *key, int keylen,
unsigned char *input, int ilen,
unsigned char output[32] ); #ifdef __cplusplus
}
#endif #endif /* sm3.h */
sm3.cpp
/*
* SM3 Hash alogrith
* thanks to Xyssl
* author:goldboar
* email:[email protected]
* 2011-10-26
*/ //Testing data from SM3 Standards
//http://www.oscca.gov.cn/News/201012/News_1199.htm
// Sample 1
// Input:"abc"
// Output:66c7f0f4 62eeedd9 d1f2d46b dc10e4e2 4167c487 5cf2f7a2 297da02b 8f4ba8e0 // Sample 2
// Input:"abcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd"
// Outpuf:debe9ff9 2275b8a1 38604889 c18e5a4d 6fdb70e5 387e5765 293dcba3 9c0c5732 #include "sm3.h"
#include <string.h>
#include <stdio.h> /*
* 32-bit integer manipulation macros (big endian)
*/
#ifndef GET_ULONG_BE
#define GET_ULONG_BE(n,b,i) \
{ \
(n) = ( (unsigned int) (b)[(i) ] << 24 ) \
| ( (unsigned int) (b)[(i) + 1] << 16 ) \
| ( (unsigned int) (b)[(i) + 2] << 8 ) \
| ( (unsigned int) (b)[(i) + 3] ); \
}
#endif #ifndef PUT_ULONG_BE
#define PUT_ULONG_BE(n,b,i) \
{ \
(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
(b)[(i) + 3] = (unsigned char) ( (n) ); \
}
#endif /*
* SM3 context setup
*/
void sm3_starts( sm3_context *ctx )
{
ctx->total[0] = 0;
ctx->total[1] = 0; ctx->state[0] = 0x7380166F;
ctx->state[1] = 0x4914B2B9;
ctx->state[2] = 0x172442D7;
ctx->state[3] = 0xDA8A0600;
ctx->state[4] = 0xA96F30BC;
ctx->state[5] = 0x163138AA;
ctx->state[6] = 0xE38DEE4D;
ctx->state[7] = 0xB0FB0E4E; } static void sm3_process( sm3_context *ctx, unsigned char data[64] )
{
unsigned int SS1, SS2, TT1, TT2, W[68],W1[64];
unsigned int A, B, C, D, E, F, G, H;
unsigned int T[64];
unsigned int Temp1,Temp2,Temp3,Temp4,Temp5;
int j;
#ifdef _DEBUG
int i;
#endif // for(j=0; j < 68; j++)
// W[j] = 0;
// for(j=0; j < 64; j++)
// W1[j] = 0; for(j = 0; j < 16; j++)
T[j] = 0x79CC4519;
for(j =16; j < 64; j++)
T[j] = 0x7A879D8A; GET_ULONG_BE( W[ 0], data, 0 );
GET_ULONG_BE( W[ 1], data, 4 );
GET_ULONG_BE( W[ 2], data, 8 );
GET_ULONG_BE( W[ 3], data, 12 );
GET_ULONG_BE( W[ 4], data, 16 );
GET_ULONG_BE( W[ 5], data, 20 );
GET_ULONG_BE( W[ 6], data, 24 );
GET_ULONG_BE( W[ 7], data, 28 );
GET_ULONG_BE( W[ 8], data, 32 );
GET_ULONG_BE( W[ 9], data, 36 );
GET_ULONG_BE( W[10], data, 40 );
GET_ULONG_BE( W[11], data, 44 );
GET_ULONG_BE( W[12], data, 48 );
GET_ULONG_BE( W[13], data, 52 );
GET_ULONG_BE( W[14], data, 56 );
GET_ULONG_BE( W[15], data, 60 ); #ifdef _DEBUG
printf("Message with padding:\n");
for(i=0; i< 8; i++)
printf("%08x ",W[i]);
printf("\n");
for(i=8; i< 16; i++)
printf("%08x ",W[i]);
printf("\n");
#endif #define FF0(x,y,z) ( (x) ^ (y) ^ (z))
#define FF1(x,y,z) (((x) & (y)) | ( (x) & (z)) | ( (y) & (z))) #define GG0(x,y,z) ( (x) ^ (y) ^ (z))
#define GG1(x,y,z) (((x) & (y)) | ( (~(x)) & (z)) ) #define SHL(x,n) (((x) & 0xFFFFFFFF) << n)
#define ROTL(x,n) (SHL((x),n) | ((x) >> (32 - n))) #define P0(x) ((x) ^ ROTL((x),9) ^ ROTL((x),17))
#define P1(x) ((x) ^ ROTL((x),15) ^ ROTL((x),23)) for(j = 16; j < 68; j++ )
{
//W[j] = P1( W[j-16] ^ W[j-9] ^ ROTL(W[j-3],15)) ^ ROTL(W[j - 13],7 ) ^ W[j-6];
//Why thd release's result is different with the debug's ?
//Below is okay. Interesting, Perhaps VC6 has a bug of Optimizaiton. Temp1 = W[j-16] ^ W[j-9];
Temp2 = ROTL(W[j-3],15);
Temp3 = Temp1 ^ Temp2;
Temp4 = P1(Temp3);
Temp5 = ROTL(W[j - 13],7 ) ^ W[j-6];
W[j] = Temp4 ^ Temp5;
} #ifdef _DEBUG
printf("Expanding message W0-67:\n");
for(i=0; i<68; i++)
{
printf("%08x ",W[i]);
if(((i+1) % 8) == 0) printf("\n");
}
printf("\n");
#endif for(j = 0; j < 64; j++)
{
W1[j] = W[j] ^ W[j+4];
} #ifdef _DEBUG
printf("Expanding message W'0-63:\n");
for(i=0; i<64; i++)
{
printf("%08x ",W1[i]);
if(((i+1) % 8) == 0) printf("\n");
}
printf("\n");
#endif A = ctx->state[0];
B = ctx->state[1];
C = ctx->state[2];
D = ctx->state[3];
E = ctx->state[4];
F = ctx->state[5];
G = ctx->state[6];
H = ctx->state[7];
#ifdef _DEBUG
printf("j A B C D E F G H\n");
printf(" %08x %08x %08x %08x %08x %08x %08x %08x\n",A,B,C,D,E,F,G,H);
#endif for(j =0; j < 16; j++)
{
SS1 = ROTL((ROTL(A,12) + E + ROTL(T[j],j)), 7);
SS2 = SS1 ^ ROTL(A,12);
TT1 = FF0(A,B,C) + D + SS2 + W1[j];
TT2 = GG0(E,F,G) + H + SS1 + W[j];
D = C;
C = ROTL(B,9);
B = A;
A = TT1;
H = G;
G = ROTL(F,19);
F = E;
E = P0(TT2);
#ifdef _DEBUG
printf("%02d %08x %08x %08x %08x %08x %08x %08x %08x\n",j,A,B,C,D,E,F,G,H);
#endif
} for(j =16; j < 64; j++)
{
SS1 = ROTL((ROTL(A,12) + E + ROTL(T[j],j)), 7);
SS2 = SS1 ^ ROTL(A,12);
TT1 = FF1(A,B,C) + D + SS2 + W1[j];
TT2 = GG1(E,F,G) + H + SS1 + W[j];
D = C;
C = ROTL(B,9);
B = A;
A = TT1;
H = G;
G = ROTL(F,19);
F = E;
E = P0(TT2);
#ifdef _DEBUG
printf("%02d %08x %08x %08x %08x %08x %08x %08x %08x\n",j,A,B,C,D,E,F,G,H);
#endif
} ctx->state[0] ^= A;
ctx->state[1] ^= B;
ctx->state[2] ^= C;
ctx->state[3] ^= D;
ctx->state[4] ^= E;
ctx->state[5] ^= F;
ctx->state[6] ^= G;
ctx->state[7] ^= H;
#ifdef _DEBUG
printf(" %08x %08x %08x %08x %08x %08x %08x %08x\n",ctx->state[0],ctx->state[1],ctx->state[2],
ctx->state[3],ctx->state[4],ctx->state[5],ctx->state[6],ctx->state[7]);
#endif
} /*
* SM3 process buffer
*/
void sm3_update( sm3_context *ctx, unsigned char *input, int ilen )
{
int fill;
unsigned int left; if( ilen <= 0 )
return; left = ctx->total[0] & 0x3F;
fill = 64 - left; ctx->total[0] += ilen;
ctx->total[0] &= 0xFFFFFFFF; if( ctx->total[0] < (unsigned int) ilen )
ctx->total[1]++; if( left && ilen >= fill )
{
memcpy( (void *) (ctx->buffer + left),
(void *) input, fill );
sm3_process( ctx, ctx->buffer );
input += fill;
ilen -= fill;
left = 0;
} while( ilen >= 64 )
{
sm3_process( ctx, input );
input += 64;
ilen -= 64;
} if( ilen > 0 )
{
memcpy( (void *) (ctx->buffer + left),
(void *) input, ilen );
}
} static const unsigned char sm3_padding[64] =
{
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
}; /*
* SM3 final digest
*/
void sm3_finish( sm3_context *ctx, unsigned char output[32] )
{
unsigned int last, padn;
unsigned int high, low;
unsigned char msglen[8]; high = ( ctx->total[0] >> 29 )
| ( ctx->total[1] << 3 );
low = ( ctx->total[0] << 3 ); PUT_ULONG_BE( high, msglen, 0 );
PUT_ULONG_BE( low, msglen, 4 ); last = ctx->total[0] & 0x3F;
padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last ); sm3_update( ctx, (unsigned char *) sm3_padding, padn );
sm3_update( ctx, msglen, 8 ); PUT_ULONG_BE( ctx->state[0], output, 0 );
PUT_ULONG_BE( ctx->state[1], output, 4 );
PUT_ULONG_BE( ctx->state[2], output, 8 );
PUT_ULONG_BE( ctx->state[3], output, 12 );
PUT_ULONG_BE( ctx->state[4], output, 16 );
PUT_ULONG_BE( ctx->state[5], output, 20 );
PUT_ULONG_BE( ctx->state[6], output, 24 );
PUT_ULONG_BE( ctx->state[7], output, 28 );
} /*
* output = SM3( input buffer )
*/
void sm3( unsigned char *input, int ilen,
unsigned char output[32] )
{
sm3_context ctx; sm3_starts( &ctx );
sm3_update( &ctx, input, ilen );
sm3_finish( &ctx, output ); memset( &ctx, 0, sizeof( sm3_context ) );
} /*
* output = SM3( file contents )
*/
int sm3_file( char *path, unsigned char output[32] )
{
FILE *f;
size_t n;
sm3_context ctx;
unsigned char buf[1024]; if( ( f = fopen( path, "rb" ) ) == NULL )
return( 1 ); sm3_starts( &ctx ); while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
sm3_update( &ctx, buf, (int) n ); sm3_finish( &ctx, output ); memset( &ctx, 0, sizeof( sm3_context ) ); if( ferror( f ) != 0 )
{
fclose( f );
return( 2 );
} fclose( f );
return( 0 );
} /*
* SM3 HMAC context setup
*/
void sm3_hmac_starts( sm3_context *ctx, unsigned char *key, int keylen )
{
int i;
unsigned char sum[32]; if( keylen > 64 )
{
sm3( key, keylen, sum );
keylen = 32;
//keylen = ( is224 ) ? 28 : 32;
key = sum;
} memset( ctx->ipad, 0x36, 64 );
memset( ctx->opad, 0x5C, 64 ); for( i = 0; i < keylen; i++ )
{
ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] );
ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] );
} sm3_starts( ctx);
sm3_update( ctx, ctx->ipad, 64 ); memset( sum, 0, sizeof( sum ) );
} /*
* SM3 HMAC process buffer
*/
void sm3_hmac_update( sm3_context *ctx, unsigned char *input, int ilen )
{
sm3_update( ctx, input, ilen );
} /*
* SM3 HMAC final digest
*/
void sm3_hmac_finish( sm3_context *ctx, unsigned char output[32] )
{
int hlen;
unsigned char tmpbuf[32]; //is224 = ctx->is224;
hlen = 32; sm3_finish( ctx, tmpbuf );
sm3_starts( ctx );
sm3_update( ctx, ctx->opad, 64 );
sm3_update( ctx, tmpbuf, hlen );
sm3_finish( ctx, output ); memset( tmpbuf, 0, sizeof( tmpbuf ) );
} /*
* output = HMAC-SM#( hmac key, input buffer )
*/
void sm3_hmac( unsigned char *key, int keylen,
unsigned char *input, int ilen,
unsigned char output[32] )
{
sm3_context ctx; sm3_hmac_starts( &ctx, key, keylen);
sm3_hmac_update( &ctx, input, ilen );
sm3_hmac_finish( &ctx, output ); memset( &ctx, 0, sizeof( sm3_context ) );
}
测试代码test.c
#include <stdio.h>
#include "sm3.h" int main () { //test sm3_hash
unsigned char tp[2] = {0x1,0x2};
unsigned char hspV[2014] = {0};
int hspL = 0;
sm3(tp, 2, hspV);
FILE *fp = NULL;
fp = fopen("./sm3hsv.dat","wb");
fwrite(hspV,1,32,fp);
fclose(fp);
printf("sm3=%d\n",hspL);
return 0;
}
最后通过md5比较生成的hash文件即可验证；