Sha256: 531b6915b550a404ab2df7a4066971c660855679bdb1925db55348e81f27a65e
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Size: 1.86 KB
Versions: 35
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Stored size: 1.86 KB
Contents
/*
* Copyright 2013 Couchbase, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "hmac.h"
#include "md5.h"
#include <string.h>
/**
* The code in this function is based on the code provided in rfc 2104.
* http://www.ietf.org/rfc/rfc2104.txt
*/
void cbsasl_hmac_md5(unsigned char *text,
int textlen,
unsigned char *key,
int keylen,
unsigned char *digest)
{
MD5_CTX context;
unsigned char k_ipad[65];
unsigned char k_opad[65];
unsigned char tk[16];
int i;
if (keylen > 64) {
MD5_CTX ctx;
cbsasl_MD5_Init(&ctx);
cbsasl_MD5_Update(&ctx, key, keylen);
cbsasl_MD5_Final(tk, &ctx);
key = tk;
keylen = 16;
}
memset(k_ipad, 0, sizeof(k_ipad));
memset(k_opad, 0, sizeof(k_opad));
memcpy(k_ipad, key, keylen);
memcpy(k_opad, key, keylen);
for (i = 0; i < 64; i++) {
k_ipad[i] ^= 0x36;
k_opad[i] ^= 0x5c;
}
/* Perform inner md5 */
cbsasl_MD5_Init(&context);
cbsasl_MD5_Update(&context, k_ipad, 64);
cbsasl_MD5_Update(&context, text, textlen);
cbsasl_MD5_Final(digest, &context);
/* Perform outer md5 */
cbsasl_MD5_Init(&context);
cbsasl_MD5_Update(&context, k_opad, 64);
cbsasl_MD5_Update(&context, digest, 16);
cbsasl_MD5_Final(digest, &context);
}
Version data entries
35 entries across 35 versions & 2 rubygems