163 lines
6.1 KiB
C
163 lines
6.1 KiB
C
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#include "utils_hmac.h"
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#include "utils_md5.h"
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#include "utils_sha1.h"
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#define KEY_IOPAD_SIZE 64
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#define MD5_DIGEST_SIZE 16
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#define SHA1_DIGEST_SIZE 20
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//const char * base64char = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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/*-------------------------------------------------*/
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/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>hmacmd5<64><35><EFBFBD><EFBFBD> */
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/*<2A><><EFBFBD><EFBFBD>Ѱ<EFBFBD>ҵĿ<D2B5>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD> */
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/*-------------------------------------------------*/
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void utils_hmac_md5(const char *msg, int msg_len, char *digest, const char *key, int key_len)
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{
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unsigned char k_ipad[KEY_IOPAD_SIZE]; /* inner padding - key XORd with ipad */
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unsigned char k_opad[KEY_IOPAD_SIZE]; /* outer padding - key XORd with opad */
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unsigned char out[MD5_DIGEST_SIZE];
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int i;
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iot_md5_context context;
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if((NULL == msg) || (NULL == digest) || (NULL == key)) {
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return;
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}
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if(key_len > KEY_IOPAD_SIZE) {
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return;
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}
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/* start out by storing key in pads */
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memset(k_ipad, 0, sizeof(k_ipad));
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memset(k_opad, 0, sizeof(k_opad));
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memcpy(k_ipad, key, key_len);
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memcpy(k_opad, key, key_len);
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/* XOR key with ipad and opad values */
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for (i = 0; i < KEY_IOPAD_SIZE; i++) {
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k_ipad[i] ^= 0x36;
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k_opad[i] ^= 0x5c;
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}
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/* perform inner MD5 */
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utils_md5_init(&context); /* init context for 1st pass */
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utils_md5_starts(&context); /* setup context for 1st pass */
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utils_md5_update(&context, k_ipad, KEY_IOPAD_SIZE); /* start with inner pad */
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utils_md5_update(&context, (unsigned char *) msg, msg_len); /* then text of datagram */
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utils_md5_finish(&context, out); /* finish up 1st pass */
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/* perform outer MD5 */
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utils_md5_init(&context); /* init context for 2nd pass */
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utils_md5_starts(&context); /* setup context for 2nd pass */
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utils_md5_update(&context, k_opad, KEY_IOPAD_SIZE); /* start with outer pad */
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utils_md5_update(&context, out, MD5_DIGEST_SIZE); /* then results of 1st hash */
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utils_md5_finish(&context, out); /* finish up 2nd pass */
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for (i = 0; i < MD5_DIGEST_SIZE; ++i) {
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digest[i * 2] = utils_hb2hex(out[i] >> 4);
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digest[i * 2 + 1] = utils_hb2hex(out[i]);
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}
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}
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/*-------------------------------------------------*/
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/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>hmacsha1<61><31><EFBFBD><EFBFBD> */
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/*<2A><><EFBFBD><EFBFBD>Ѱ<EFBFBD>ҵĿ<D2B5>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD> */
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/*-------------------------------------------------*/
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void utils_hmac_sha1(const char *msg, int msg_len, char *digest, const char *key, int key_len)
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{
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iot_sha1_context context;
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unsigned char k_ipad[KEY_IOPAD_SIZE]; /* inner padding - key XORd with ipad */
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unsigned char k_opad[KEY_IOPAD_SIZE]; /* outer padding - key XORd with opad */
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unsigned char out[SHA1_DIGEST_SIZE];
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int i;
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if((NULL == msg) || (NULL == digest) || (NULL == key)) {
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return;
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}
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if(key_len > KEY_IOPAD_SIZE) {
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return;
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}
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/* start out by storing key in pads */
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memset(k_ipad, 0, sizeof(k_ipad));
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memset(k_opad, 0, sizeof(k_opad));
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memcpy(k_ipad, key, key_len);
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memcpy(k_opad, key, key_len);
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/* XOR key with ipad and opad values */
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for (i = 0; i < KEY_IOPAD_SIZE; i++) {
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k_ipad[i] ^= 0x36;
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k_opad[i] ^= 0x5c;
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}
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/* perform inner SHA */
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utils_sha1_init(&context); /* init context for 1st pass */
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utils_sha1_starts(&context); /* setup context for 1st pass */
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utils_sha1_update(&context, k_ipad, KEY_IOPAD_SIZE); /* start with inner pad */
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utils_sha1_update(&context, (unsigned char *) msg, msg_len); /* then text of datagram */
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utils_sha1_finish(&context, out); /* finish up 1st pass */
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/* perform outer SHA */
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utils_sha1_init(&context); /* init context for 2nd pass */
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utils_sha1_starts(&context); /* setup context for 2nd pass */
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utils_sha1_update(&context, k_opad, KEY_IOPAD_SIZE); /* start with outer pad */
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utils_sha1_update(&context, out, SHA1_DIGEST_SIZE); /* then results of 1st hash */
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utils_sha1_finish(&context, out); /* finish up 2nd pass */
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for (i = 0; i < SHA1_DIGEST_SIZE; ++i) {
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digest[i * 2] = utils_hb2hex(out[i] >> 4);
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digest[i * 2 + 1] = utils_hb2hex(out[i]);
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}
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}
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///*-------------------------------------------------*/
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///*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>base64<36><34><EFBFBD><EFBFBD> */
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///*<2A><><EFBFBD><EFBFBD>Ѱ<EFBFBD>ҵĿ<D2B5>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD> */
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///*-------------------------------------------------*/
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//int base64_decode( const char * base64, unsigned char * bindata )
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//{
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// int i, j;
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// unsigned char k;
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// unsigned char temp[4];
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// for ( i = 0, j = 0; base64[i] != '\0' ; i += 4 )
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// {
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// memset( temp, 0xFF, sizeof(temp) );
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// for ( k = 0 ; k < 64 ; k ++ )
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// {
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// if ( base64char[k] == base64[i] )
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// temp[0]= k;
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// }
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// for ( k = 0 ; k < 64 ; k ++ )
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// {
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// if ( base64char[k] == base64[i+1] )
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// temp[1]= k;
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// }
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// for ( k = 0 ; k < 64 ; k ++ )
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// {
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// if ( base64char[k] == base64[i+2] )
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// temp[2]= k;
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// }
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// for ( k = 0 ; k < 64 ; k ++ )
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// {
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// if ( base64char[k] == base64[i+3] )
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// temp[3]= k;
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// }
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// bindata[j++] = ((unsigned char)(((unsigned char)(temp[0] << 2))&0xFC)) |
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// ((unsigned char)((unsigned char)(temp[1]>>4)&0x03));
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// if ( base64[i+2] == '=' )
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// break;
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// bindata[j++] = ((unsigned char)(((unsigned char)(temp[1] << 4))&0xF0)) |
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// ((unsigned char)((unsigned char)(temp[2]>>2)&0x0F));
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// if ( base64[i+3] == '=' )
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// break;
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// bindata[j++] = ((unsigned char)(((unsigned char)(temp[2] << 6))&0xF0)) |
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// ((unsigned char)(temp[3]&0x3F));
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// }
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// return j;
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//}
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