HMAC SHA1调试, 在虚拟机和openwrt下运行结果不同?

源码如下: 共2个. 

/******************************************************************************
 *
 * Copyright (C) 2012 kelo.yang
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation under the terms of the GNU General Public License is hereby
 * granted. No representations are made about the suitability of this software
 * for any purpose. It is provided "as is" without express or implied warranty.
 * See the GNU General Public License for more details.
 *
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#if defined(__WIN32__) || defined(_WIN32)
    typedef unsigned long    __u32;
    typedef unsigned char    __u8;

#else
    typedef unsigned int    __u32;
    typedef unsigned char    __u8;
#endif

typedef struct {
    __u32 state[5];
    __u32 count[2];
    __u8  buffer[64];
} SHA1_CTX;

#if defined(rol)
#undef rol
#endif

#define SHA1HANDSOFF

#ifndef SHA_DIGESTSIZE
#define SHA_DIGESTSIZE 20
#endif

#ifndef SHA_BLOCKSIZE
#define SHA_BLOCKSIZE 64
#endif

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

/* blk0() and blk() perform the initial expand. */
/* I got the idea of expanding during the round function from SSLeay */
#ifndef ___LITTLE_ENDIAN
#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
    |(rol(block->l[i],8)&0x00FF00FF))
#else
#define blk0(i) block->l[i]
#endif
#define blk(i) (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))

/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
#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);


#define DBG printf

//-----------------------------------------------------------------------------------------------

/* Hash a single 512-bit block. This is the core of the algorithm. */
void SHA1Transform(__u32 state[5], __u8 buffer[64])
{
    __u32 a, b, c, d, e;
    typedef union {
        unsigned char c[64];
        __u32 l[16];
    } CHAR64LONG16;

    CHAR64LONG16* block;

#ifdef SHA1HANDSOFF
    static unsigned char workspace[64];
    block = (CHAR64LONG16*)workspace;
    //NdisMoveMemory(block, buffer, 64);
    memcpy(block, buffer, 64);

#else
    block = (CHAR64LONG16*)buffer;
#endif
    /* Copy context->state[] to working vars */
    a = state[0];
    b = state[1];
    c = state[2];
    d = state[3];
    e = state[4];
    /* 4 rounds of 20 operations each. Loop unrolled. */
    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
    /* Add the working vars back into context.state[] */
    state[0] += a;
    state[1] += b;
    state[2] += c;
    state[3] += d;
    state[4] += e;
    /* Wipe variables */
    a = b = c = d = e = 0;
}

/* SHA1Init - Initialize new context */
void SHA1Init(SHA1_CTX* context)
{
    /* SHA1 initialization constants */
    context->state[0] = 0x67452301;
    context->state[1] = 0xEFCDAB89;
    context->state[2] = 0x98BADCFE;
    context->state[3] = 0x10325476;
    context->state[4] = 0xC3D2E1F0;
    context->count[0] = context->count[1] = 0;
}

/* Run your data through this. */
void SHA1Update(SHA1_CTX* context, unsigned char* data, __u32 len)
{
    __u32 i, j;

  j = context->count[0];
  if ((context->count[0] += len << 3) < j)
        context->count[1]++;
  context->count[1] += (len>>29);
  j = (j >> 3) & 63;
  if ((j + len) > 63) {
        //NdisMoveMemory(&context->buffer[j], data, (i = 64-j));
    memcpy(&context->buffer[j], data, (i = 64-j));
    SHA1Transform(context->state, context->buffer);
    for ( ; i + 63 < len; i += 64) {
        SHA1Transform(context->state, &data[i]);
    }
    j = 0;
  }
  else i = 0;
  //NdisMoveMemory(&context->buffer[j], &data[i], len - i);
  memcpy(&context->buffer[j], &data[i], len - i);
}

/* Add padding and return the message digest. */
void SHA1Final(unsigned char digest[20], SHA1_CTX* context)
{
    __u32 i, j;
    unsigned char finalcount[8];

  for (i = 0; i < 8; i++) {
      finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
       >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
  }
  SHA1Update(context, (unsigned char *)"\200", 1);
  while ((context->count[0] & 504) != 448) {
      SHA1Update(context, (unsigned char *)"\0", 1);
  }
  SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
  for (i = 0; i < 20; i++) {
      digest[i] = (unsigned char)
       ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
  }
  i = j = 0;
  memset(context->buffer, 0x00, 64);
  memset(context->state, 0x00, 20);
  memset(context->count, 0x00, 8);
  memset(&finalcount, 0x00, 8);

#ifdef SHA1HANDSOFF /* make SHA1Transform overwrite its own static vars */
    SHA1Transform(context->state, context->buffer);
#endif
}

void truncate(char* d1, char* d2, int len)
{
    int i ;
    for (i = 0 ; i < len ; i++) d2[i] = d1[i];
}

/* Function to compute the digest */
void hmac_sha(const char *k, const char *d, char *out)
{
    int    lk = strlen(k);
    int    ld = strlen(d);

    SHA1_CTX ictx, octx ;
    char isha[SHA_DIGESTSIZE], osha[SHA_DIGESTSIZE] ;
    char key[SHA_DIGESTSIZE] ;
    char buf[SHA_BLOCKSIZE] ;
    int i , j;
    char str[100];

    DBG("lk = %d, ld = %d\n", lk, ld);
    if (lk > SHA_BLOCKSIZE) {
        SHA1_CTX tctx ;
        SHA1Init(&tctx) ;
        SHA1Update(&tctx, (unsigned char* )k, lk) ;
        SHA1Final((unsigned char *)key, &tctx) ;

        k = key ;
        lk = SHA_DIGESTSIZE ;
    }

    /**** Inner Digest ****/
    SHA1Init(&ictx) ;

    /* Pad the key for inner digest */
    for (i = 0 ; i < lk ; ++i) buf[i] = k[i] ^ 0x36 ;
    for (i = lk ; i < SHA_BLOCKSIZE ; ++i) buf[i] = 0x36 ;

    //SHA1Update(&ictx, buf, SHA_BLOCKSIZE) ;
    SHA1Update(&ictx, (unsigned char *)buf, SHA_BLOCKSIZE) ;
    SHA1Update(&ictx, (unsigned char *)d, ld) ;
    SHA1Final((unsigned char *)isha, &ictx) ;

    j = 0;
    for (i=0; i<SHA_DIGESTSIZE; i++) {
        j += sprintf(str+j, "%02X", (unsigned char)isha[i]);
    }
    DBG("hmac_sha: isha = %s\n", str);

    /**** Outter Digest ****/
    SHA1Init(&octx) ;

    /* Pad the key for outter digest */
    for (i = 0 ; i < lk ; ++i) buf[i] = k[i] ^ 0x5C ;
    for (i = lk ; i < SHA_BLOCKSIZE ; ++i) buf[i] = 0x5C ;

    //SHA1Update(&octx, buf, SHA_BLOCKSIZE) ;
    //SHA1Update(&octx, isha, SHA_DIGESTSIZE) ;
    //SHA1Final(osha, &octx) ;
    SHA1Update(&octx, (unsigned char *)buf, SHA_BLOCKSIZE) ;
    SHA1Update(&octx, (unsigned char *)isha, SHA_DIGESTSIZE) ;
    SHA1Final((unsigned char *)osha, &octx) ;

    j = 0;
    for (i=0; i<SHA_DIGESTSIZE; i++) {
        j += sprintf(str+j, "%02X", (unsigned char)osha[i]);
    }
    DBG("hmac_sha: osha = %s\n", str);

  truncate(osha, out, SHA_DIGESTSIZE);
    j = 0;
    for (i=0; i<SHA_DIGESTSIZE; i++) {
        j += sprintf(str+j, "%02X", (unsigned char)out[i]);
    }
    DBG("hmac_sha: ret = %s\n", str);
}

#调用代码如下, 

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "hmacSha1.h"

#define HMAC_SHA1_OUT_LEN 21

int main(int agrc, char *argv[])
{
    int i, j, len;
    char str_tmp[100];

    //---- hmac_sha1,
    char *access_key = "E1y1RIxovXBM3riJ28fhhUU6auL7Ok";
    //char access_key_len = strlen(access_key);
    char *string_to_sign = "1234567890";
    //char string_to_sign_len = strlen(string_to_sign);
    char *hmac_sha1_out = (char *)malloc(sizeof(char) * HMAC_SHA1_OUT_LEN);

    memset(hmac_sha1_out, 0, sizeof(hmac_sha1_out));
    memset(str_tmp, 0, sizeof(str_tmp));
    hmac_sha(access_key, string_to_sign, hmac_sha1_out);
    j = 0;
    len = strlen(hmac_sha1_out);
    for (i=0; i<len; i++) {
        j += sprintf(str_tmp +j, "%02X", (unsigned char)hmac_sha1_out[i]);
    }
    printf("hmac_sha : len = %d, %s\n", strlen(hmac_sha1_out), str_tmp);    //len = 20, BB86B7E01129ABB02826D69BC285B39771762759

    free(hmac_sha1_out);
    //---- hmac_sha1 End

    return 1;
}

#Makefile: 

OPENWRT = 0

ifeq ($(OPENWRT), 1)
    CC = ~/OpenWrt-SDK-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/bin/mips-openwrt-linux-gcc

else
    CC = gcc
endif

CFLAGS += -Wall -O2
#CFLAGS += -g

#可执行文件名和相关的obj文件
APP_BINARY = hello
OBJ = hmac_sha1.o hmacSha1.o

all: APP_FILE

%.o: %.c
    $(CC) $(CFLAGS) -c -o $@ $<

#单独编译的文件部分放在此
APP_FILE: $(OBJ)
    $(CC) $(CFLAGS) $(OBJ) -o $(APP_BINARY)    $(LFLAGS)

clean:
    @echo "cleanning project"
    $(RM) *.a *.o *~ *.so *.lo $(APP_BINARY)
    @echo "clean completed"

.PHONY: clean

1. 虚拟机, 运行结果如下
xxg@xxg-desktop:~/1-wire/hmac_sha1$ ./hello
lk = 30, ld = 10
hmac_sha: isha = 1C09351EBE14071F3EBD455E687C0182C69BD4BE
hmac_sha: osha = BB86B7E01129ABB02826D69BC285B39771762759
hmac_sha: ret = BB86B7E01129ABB02826D69BC285B39771762759
hmac_sha : len = 20, BB86B7E01129ABB02826D69BC285B39771762759

2. openwrt下, 运行结果如下
root@OpenWrt:/xutest# chmod +x hello
root@OpenWrt:/xutest# ./hello
lk = 30, ld = 10
hmac_sha: isha = 0BB90C8EA6E0E18D1EBD8EAFF173BABAA4596860
hmac_sha: osha = DAE4FD3CC9B58CBE23BABCCE5B62C14880FECEEB
hmac_sha: ret = DAE4FD3CC9B58CBE23BABCCE5B62C14880FECEEB
hmac_sha : len = 20, DAE4FD3CC9B58CBE23BABCCE5B62C14880FECEEB

---

解决: Makefile修改如下

OPENWRT = 0

ifeq ($(OPENWRT), 1)
  CC = ~/OpenWrt-SDK-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/bin/mips-openwrt-linux-gcc
  DEFS = -D___LITTLE_ENDIAN
else
  CC = gcc
endif

CFLAGS += -Wall -O2 $(DEFS)
#CFLAGS += -g