content/child/webcrypto/openssl/aes_key_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_OPENSSL_H_
   6 #define CONTENT_CHILD_WEBCRYPTO_OPENSSL_AES_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   virtual Status VerifyKeyUsagesBeforeGenerateKey(
  32       blink::WebCryptoKeyUsageMask usage_mask) const OVERRIDE;
  33
  34   virtual Status GenerateSecretKey(const blink::WebCryptoAlgorithm& algorithm,
  35                                    bool extractable,
  36                                    blink::WebCryptoKeyUsageMask usage_mask,
  37                                    blink::WebCryptoKey* key) const OVERRIDE;
  38
  39   virtual Status VerifyKeyUsagesBeforeImportKey(
  40       blink::WebCryptoKeyFormat format,
  41       blink::WebCryptoKeyUsageMask usage_mask) const OVERRIDE;
  42
  43   virtual Status ImportKeyRaw(const CryptoData& key_data,
  44                               const blink::WebCryptoAlgorithm& algorithm,
  45                               bool extractable,
  46                               blink::WebCryptoKeyUsageMask usage_mask,
  47                               blink::WebCryptoKey* key) const OVERRIDE;
  48
  49   virtual Status ImportKeyJwk(const CryptoData& key_data,
  50                               const blink::WebCryptoAlgorithm& algorithm,
  51                               bool extractable,
  52                               blink::WebCryptoKeyUsageMask usage_mask,
  53                               blink::WebCryptoKey* key) const OVERRIDE;
  54
  55   virtual Status ExportKeyRaw(const blink::WebCryptoKey& key,
  56                               std::vector<uint8_t>* buffer) const OVERRIDE;
  57
  58   virtual Status ExportKeyJwk(const blink::WebCryptoKey& key,
  59                               std::vector<uint8_t>* buffer) const OVERRIDE;
  60
  61  private:
  62   const blink::WebCryptoKeyUsageMask all_key_usages_;
  63   const std::string jwk_suffix_;
  64 };
  65
  66 }  // namespace webcrypto
  67
  68 }  // namespace content
  69
  70 #endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_AES_OPENSSL_H_