content/child/webcrypto/openssl/util_openssl.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_WEBCRYPTO_OPENSSL_UTIL_OPENSSL_H_
   6 #define CONTENT_CHILD_WEBCRYPTO_OPENSSL_UTIL_OPENSSL_H_
   7
   8 #include <vector>
   9
  10 #include <openssl/ossl_typ.h>
  11
  12 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
  13 #include "third_party/WebKit/public/platform/WebCryptoKey.h"
  14
  15 namespace content {
  16
  17 namespace webcrypto {
  18
  19 class CryptoData;
  20 class Status;
  21
  22 // The values of these constants correspond with the "enc" parameter of
  23 // EVP_CipherInit_ex(), do not change.
  24 enum EncryptOrDecrypt { DECRYPT=0, ENCRYPT=1 };
  25
  26 const EVP_MD* GetDigest(blink::WebCryptoAlgorithmId id);
  27
  28 // Does either encryption or decryption for an AEAD algorithm.
  29 //   * |mode| controls whether encryption or decryption is done
  30 //   * |aead_alg| the algorithm (for instance AES-GCM)
  31 //   * |buffer| where the ciphertext or plaintext is written to.
  32 Status AeadEncryptDecrypt(EncryptOrDecrypt mode,
  33                           const std::vector<uint8_t>& raw_key,
  34                           const CryptoData& data,
  35                           unsigned int tag_length_bytes,
  36                           const CryptoData& iv,
  37                           const CryptoData& additional_data,
  38                           const EVP_AEAD* aead_alg,
  39                           std::vector<uint8_t>* buffer);
  40
  41 }  // namespace webcrypto
  42
  43 }  // namespace content
  44
  45 #endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_UTIL_OPENSSL_H_