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mongoc-crypto-openssl.c
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mongoc-crypto-openssl.c
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/*
* Copyright 2016 MongoDB, 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 "mongoc-config.h"
#include <bson/bson.h>
#ifdef MONGOC_ENABLE_CRYPTO_LIBCRYPTO
#include "mongoc-crypto-openssl-private.h"
#include "mongoc-crypto-private.h"
#include <openssl/sha.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
void
mongoc_crypto_openssl_hmac_sha1 (mongoc_crypto_t *crypto,
const void *key,
int key_len,
const unsigned char *data,
int data_len,
unsigned char *hmac_out)
{
/* U1 = HMAC(input, salt + 0001) */
HMAC (EVP_sha1 (), key, key_len, data, data_len, hmac_out, NULL);
}
#if OPENSSL_VERSION_NUMBER < 0x10100000L || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
EVP_MD_CTX *
EVP_MD_CTX_new (void)
{
return bson_malloc0 (sizeof (EVP_MD_CTX));
}
void
EVP_MD_CTX_free (EVP_MD_CTX *ctx)
{
EVP_MD_CTX_cleanup (ctx);
bson_free (ctx);
}
#endif
bool
mongoc_crypto_openssl_sha1 (mongoc_crypto_t *crypto,
const unsigned char *input,
const size_t input_len,
unsigned char *hash_out)
{
EVP_MD_CTX *digest_ctxp = EVP_MD_CTX_new ();
bool rval = false;
if (1 != EVP_DigestInit_ex (digest_ctxp, EVP_sha1 (), NULL)) {
goto cleanup;
}
if (1 != EVP_DigestUpdate (digest_ctxp, input, input_len)) {
goto cleanup;
}
rval = (1 == EVP_DigestFinal_ex (digest_ctxp, hash_out, NULL));
cleanup:
EVP_MD_CTX_free (digest_ctxp);
return rval;
}
void
mongoc_crypto_openssl_hmac_sha256 (mongoc_crypto_t *crypto,
const void *key,
int key_len,
const unsigned char *data,
int data_len,
unsigned char *hmac_out)
{
/* U1 = HMAC(input, salt + 0001) */
HMAC (EVP_sha256 (), key, key_len, data, data_len, hmac_out, NULL);
}
bool
mongoc_crypto_openssl_sha256 (mongoc_crypto_t *crypto,
const unsigned char *input,
const size_t input_len,
unsigned char *hash_out)
{
EVP_MD_CTX *digest_ctxp = EVP_MD_CTX_new ();
bool rval = false;
if (1 != EVP_DigestInit_ex (digest_ctxp, EVP_sha256 (), NULL)) {
goto cleanup;
}
if (1 != EVP_DigestUpdate (digest_ctxp, input, input_len)) {
goto cleanup;
}
rval = (1 == EVP_DigestFinal_ex (digest_ctxp, hash_out, NULL));
cleanup:
EVP_MD_CTX_free (digest_ctxp);
return rval;
}
#endif