| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COMPONENTS_WEBCRYPTO_ALGORITHMS_AES_H_ |
| #define COMPONENTS_WEBCRYPTO_ALGORITHMS_AES_H_ |
| |
| #include <stdint.h> |
| |
| #include "components/webcrypto/algorithm_implementation.h" |
| |
| namespace webcrypto { |
| |
| // Base class for AES algorithms that provides the implementation for key |
| // creation and export. |
| class AesAlgorithm : public AlgorithmImplementation { |
| public: |
| // |all_key_usages| is the set of all WebCrypto key usages that are |
| // allowed for imported or generated keys. |jwk_suffix| is the suffix |
| // used when constructing JWK names for the algorithm. For instance A128CBC |
| // is the JWK name for 128-bit AES-CBC. The |jwk_suffix| in this case would |
| // be "CBC". |
| AesAlgorithm(blink::WebCryptoKeyUsageMask all_key_usages, |
| const std::string& jwk_suffix); |
| |
| // This is the same as the other AesAlgorithm constructor where |
| // |all_key_usages| is pre-filled to values for encryption/decryption |
| // algorithms (supports usages for: encrypt, decrypt, wrap, unwrap). |
| explicit AesAlgorithm(const std::string& jwk_suffix); |
| |
| Status GenerateKey(const blink::WebCryptoAlgorithm& algorithm, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usages, |
| GenerateKeyResult* result) const override; |
| |
| Status VerifyKeyUsagesBeforeImportKey( |
| blink::WebCryptoKeyFormat format, |
| blink::WebCryptoKeyUsageMask usages) const override; |
| |
| Status ImportKeyRaw(const CryptoData& key_data, |
| const blink::WebCryptoAlgorithm& algorithm, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usages, |
| blink::WebCryptoKey* key) const override; |
| |
| Status ImportKeyJwk(const CryptoData& key_data, |
| const blink::WebCryptoAlgorithm& algorithm, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usages, |
| blink::WebCryptoKey* key) const override; |
| |
| Status ExportKeyRaw(const blink::WebCryptoKey& key, |
| std::vector<uint8_t>* buffer) const override; |
| |
| Status ExportKeyJwk(const blink::WebCryptoKey& key, |
| std::vector<uint8_t>* buffer) const override; |
| |
| Status DeserializeKeyForClone(const blink::WebCryptoKeyAlgorithm& algorithm, |
| blink::WebCryptoKeyType type, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usages, |
| const CryptoData& key_data, |
| blink::WebCryptoKey* key) const override; |
| |
| Status GetKeyLength(const blink::WebCryptoAlgorithm& key_length_algorithm, |
| bool* has_length_bits, |
| unsigned int* length_bits) const override; |
| |
| private: |
| const blink::WebCryptoKeyUsageMask all_key_usages_; |
| const std::string jwk_suffix_; |
| }; |
| |
| } // namespace webcrypto |
| |
| #endif // COMPONENTS_WEBCRYPTO_ALGORITHMS_AES_H_ |