國密SM3算法在linux和windows平臺結果不一致問題
阿新 • • 發佈：2019-03-01
www 國密 from test star ipad define linu plus
什麽是sm3，是一種類似於sha256的哈希算法，是咱們國家的哈希標準算法；
最近在使用sm3算法時，同樣的一份數據，調用同樣的sm3接口，發現得到的結果是不一樣的；
那麽在應用過的過程中，如果同樣的算法出的結果不一樣，那驗證簽名業務就會不過，出問題；
最後發現是sm3算法在內部使用了unsigned long,
這裏要註意 long, 在 windows64平臺下占用4個字節 ；
而long, 在linux64平臺下占用8個字節；
這種差異直接導致了windows和linux結果的差異；
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
//解決方式就是，修改sm3.cpp，將所有unsigned long 改成 unsigned int;
這樣即支持linux和windows平臺就保持一致了；
修改後的源碼
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 ) ); }
測試代碼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;
}
最後通過md5比較生成的hash文件即可驗證；
國密SM3算法在linux和windows平臺結果不一致問題