| // 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 CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_ |
| #define CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_ |
| |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "content/common/content_export.h" |
| #include "third_party/WebKit/public/platform/WebCrypto.h" |
| #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" |
| |
| namespace content { |
| |
| namespace webcrypto { |
| |
| class CryptoData; |
| class Status; |
| |
| // Do one-time initialization. It is safe to call this multiple times. |
| // May be called concurrently from multiple threads. |
| CONTENT_EXPORT void Init(); |
| |
| // The functions exported by shared_crypto.h provide a common entry point for |
| // synchronous crypto operations. |
| // |
| // Here is how the layer cake looks. |
| // |
| // Blink |
| // | |
| // ==============|========================== |
| // | |
| // content |
| // | |
| // | |
| // v |
| // WebCryptoImpl (Implements the blink::WebCrypto interface for |
| // | asynchronous completions; posts tasks to |
| // | the webcrypto worker pool to fulfill the request |
| // using the synchronous methods of shared_crypto.h) |
| // | |
| // | [shared_crypto_unittest.cc] |
| // | / |
| // | / (The blink::WebCrypto interface is not |
| // | / testable from the chromium side because |
| // | / the result object is not mockable. |
| // | / Tests are done on shared_crypto instead. |
| // V v |
| // [shared_crypto.h] (Exposes synchronous functions in the |
| // | webcrypto:: namespace. This does |
| // | common validations, infers default |
| // | parameters, and casts the algorithm |
| // | parameters to the right types) |
| // | |
| // V |
| // [platform_crypto.h] (Exposes functions in the webcrypto::platform |
| // | namespace) |
| // | |
| // | |
| // V |
| // [platform_crypto_{nss|openssl}.cc] (Implements using the platform crypto |
| // library) |
| // |
| // The shared_crypto.h functions are responsible for: |
| // |
| // * Validating the key usages |
| // * Inferring default parameters when not specified |
| // * Validating key exportability |
| // * Validating algorithm with key.algorithm |
| // * Converting the Blink key to a more specific platform::{PublicKey, |
| // PrivateKey, SymKey} and making sure it was the right type. |
| // * Validating alogorithm specific parameters (for instance, was the iv for |
| // AES-CBC 16 bytes). |
| // * Parse a JWK |
| |
| CONTENT_EXPORT Status Encrypt(const blink::WebCryptoAlgorithm& algorithm, |
| const blink::WebCryptoKey& key, |
| const CryptoData& data, |
| std::vector<uint8>* buffer); |
| |
| CONTENT_EXPORT Status Decrypt(const blink::WebCryptoAlgorithm& algorithm, |
| const blink::WebCryptoKey& key, |
| const CryptoData& data, |
| std::vector<uint8>* buffer); |
| |
| CONTENT_EXPORT Status Digest(const blink::WebCryptoAlgorithm& algorithm, |
| const CryptoData& data, |
| std::vector<uint8>* buffer); |
| |
| CONTENT_EXPORT scoped_ptr<blink::WebCryptoDigestor> CreateDigestor( |
| blink::WebCryptoAlgorithmId algorithm); |
| |
| CONTENT_EXPORT Status |
| GenerateSecretKey(const blink::WebCryptoAlgorithm& algorithm, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usage_mask, |
| blink::WebCryptoKey* key); |
| |
| CONTENT_EXPORT Status |
| GenerateKeyPair(const blink::WebCryptoAlgorithm& algorithm, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usage_mask, |
| blink::WebCryptoKey* public_key, |
| blink::WebCryptoKey* private_key); |
| |
| CONTENT_EXPORT Status ImportKey(blink::WebCryptoKeyFormat format, |
| const CryptoData& key_data, |
| const blink::WebCryptoAlgorithm& algorithm, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usage_mask, |
| blink::WebCryptoKey* key); |
| |
| CONTENT_EXPORT Status ExportKey(blink::WebCryptoKeyFormat format, |
| const blink::WebCryptoKey& key, |
| std::vector<uint8>* buffer); |
| |
| CONTENT_EXPORT Status Sign(const blink::WebCryptoAlgorithm& algorithm, |
| const blink::WebCryptoKey& key, |
| const CryptoData& data, |
| std::vector<uint8>* buffer); |
| |
| CONTENT_EXPORT Status |
| VerifySignature(const blink::WebCryptoAlgorithm& algorithm, |
| const blink::WebCryptoKey& key, |
| const CryptoData& signature, |
| const CryptoData& data, |
| bool* signature_match); |
| |
| CONTENT_EXPORT Status |
| WrapKey(blink::WebCryptoKeyFormat format, |
| const blink::WebCryptoKey& key_to_wrap, |
| const blink::WebCryptoKey& wrapping_key, |
| const blink::WebCryptoAlgorithm& wrapping_algorithm, |
| std::vector<uint8>* buffer); |
| |
| CONTENT_EXPORT Status |
| UnwrapKey(blink::WebCryptoKeyFormat format, |
| const CryptoData& wrapped_key_data, |
| const blink::WebCryptoKey& wrapping_key, |
| const blink::WebCryptoAlgorithm& wrapping_algorithm, |
| const blink::WebCryptoAlgorithm& algorithm, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usage_mask, |
| blink::WebCryptoKey* key); |
| |
| // Called on the target Blink thread. |
| CONTENT_EXPORT bool SerializeKeyForClone(const blink::WebCryptoKey& key, |
| blink::WebVector<uint8>* key_data); |
| |
| // Called on the target Blink thread. |
| CONTENT_EXPORT bool DeserializeKeyForClone( |
| const blink::WebCryptoKeyAlgorithm& algorithm, |
| blink::WebCryptoKeyType type, |
| bool extractable, |
| blink::WebCryptoKeyUsageMask usage_mask, |
| const CryptoData& key_data, |
| blink::WebCryptoKey* key); |
| |
| namespace platform { |
| class SymKey; |
| class PublicKey; |
| class PrivateKey; |
| } |
| |
| Status ToPlatformSymKey(const blink::WebCryptoKey& key, platform::SymKey** out); |
| |
| Status ToPlatformPublicKey(const blink::WebCryptoKey& key, |
| platform::PublicKey** out); |
| |
| Status ToPlatformPrivateKey(const blink::WebCryptoKey& key, |
| platform::PrivateKey** out); |
| |
| // Returns Staus::Success() if |usages| is valid for |key_type| and |algorithm|. |
| // Otherwise returns a failure |
| Status CheckKeyUsages(blink::WebCryptoAlgorithmId algorithm, |
| blink::WebCryptoKeyType key_type, |
| blink::WebCryptoKeyUsageMask usages); |
| |
| } // namespace webcrypto |
| |
| } // namespace content |
| |
| #endif // CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_ |