/* 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/mongoc-config.h"
#include "mongoc/mongoc-crypto-private.h"

#ifdef MONGOC_ENABLE_CRYPTO_COMMON_CRYPTO
#include "mongoc/mongoc-crypto-common-crypto-private.h"
#include <CommonCrypto/CommonHMAC.h>
#include <CommonCrypto/CommonDigest.h>


void
mongoc_crypto_common_crypto_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) */
   CCHmac (
      kCCHmacAlgSHA1, key, (size_t) key_len, data, (size_t) data_len, hmac_out);
}

bool
mongoc_crypto_common_crypto_sha1 (mongoc_crypto_t *crypto,
                                  const unsigned char *input,
                                  const size_t input_len,
                                  unsigned char *hash_out)
{
   if (CC_SHA1 (input, (CC_LONG) input_len, hash_out)) {
      return true;
   }
   return false;
}

void
mongoc_crypto_common_crypto_hmac_sha256 (mongoc_crypto_t *crypto,
                                         const void *key,
                                         int key_len,
                                         const unsigned char *data,
                                         int data_len,
                                         unsigned char *hmac_out)
{
   CCHmac (kCCHmacAlgSHA256,
           key,
           (size_t) key_len,
           data,
           (size_t) data_len,
           hmac_out);
}

bool
mongoc_crypto_common_crypto_sha256 (mongoc_crypto_t *crypto,
                                    const unsigned char *input,
                                    const size_t input_len,
                                    unsigned char *hash_out)
{
   if (CC_SHA256 (input, (CC_LONG) input_len, hash_out)) {
      return true;
   }
   return false;
}

#endif
