content/child/webcrypto/openssl/aes_algorithm_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_AES_ALGORITHM_OPENSSL_H_
   6 #define CONTENT_CHILD_WEBCRYPTO_OPENSSL_AES_ALGORITHM_OPENSSL_H_
   7
   8 #include "content/child/webcrypto/algorithm_implementation.h"
   9
  10 namespace content {
  11
  12 namespace webcrypto {
  13
  14 // Base class for AES algorithms that provides the implementation for key
  15 // creation and export.
  16 class AesAlgorithm : public AlgorithmImplementation {
  17  public:
  18   // |all_key_usages| is the set of all WebCrypto key usages that are
  19   // allowed for imported or generated keys. |jwk_suffix| is the suffix
  20   // used when constructing JWK names for the algorithm. For instance A128CBC
  21   // is the JWK name for 128-bit AES-CBC. The |jwk_suffix| in this case would
  22   // be "CBC".
  23   AesAlgorithm(blink::WebCryptoKeyUsageMask all_key_usages,
  24                const std::string& jwk_suffix);
  25
  26   // This is the same as the other AesAlgorithm constructor where
  27   // |all_key_usages| is pre-filled to values for encryption/decryption
  28   // algorithms (supports usages for: encrypt, decrypt, wrap, unwrap).
  29   explicit AesAlgorithm(const std::string& jwk_suffix);
  30
  31   Status GenerateKey(const blink::WebCryptoAlgorithm& algorithm,
  32                      bool extractable,
  33                      blink::WebCryptoKeyUsageMask usages,
  34                      GenerateKeyResult* result) const override;
  35
  36   Status VerifyKeyUsagesBeforeImportKey(
  37       blink::WebCryptoKeyFormat format,
  38       blink::WebCryptoKeyUsageMask usages) const override;
  39
  40   Status ImportKeyRaw(const CryptoData& key_data,
  41                       const blink::WebCryptoAlgorithm& algorithm,
  42                       bool extractable,
  43                       blink::WebCryptoKeyUsageMask usages,
  44                       blink::WebCryptoKey* key) const override;
  45
  46   Status ImportKeyJwk(const CryptoData& key_data,
  47                       const blink::WebCryptoAlgorithm& algorithm,
  48                       bool extractable,
  49                       blink::WebCryptoKeyUsageMask usages,
  50                       blink::WebCryptoKey* key) const override;
  51
  52   Status ExportKeyRaw(const blink::WebCryptoKey& key,
  53                       std::vector<uint8_t>* buffer) const override;
  54
  55   Status ExportKeyJwk(const blink::WebCryptoKey& key,
  56                       std::vector<uint8_t>* buffer) const override;
  57
  58   Status SerializeKeyForClone(
  59       const blink::WebCryptoKey& key,
  60       blink::WebVector<uint8_t>* key_data) const override;
  61
  62   Status DeserializeKeyForClone(const blink::WebCryptoKeyAlgorithm& algorithm,
  63                                 blink::WebCryptoKeyType type,
  64                                 bool extractable,
  65                                 blink::WebCryptoKeyUsageMask usages,
  66                                 const CryptoData& key_data,
  67                                 blink::WebCryptoKey* key) const override;
  68
  69   Status GetKeyLength(const blink::WebCryptoAlgorithm& key_length_algorithm,
  70                       bool* has_length_bits,
  71                       unsigned int* length_bits) const override;
  72
  73  private:
  74   const blink::WebCryptoKeyUsageMask all_key_usages_;
  75   const std::string jwk_suffix_;
  76 };
  77
  78 }  // namespace webcrypto
  79
  80 }  // namespace content
  81
  82 #endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_AES_ALGORITHM_OPENSSL_H_