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| 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_SHARED_CRYPTO_H_ | |
| 6 #define CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_ | |
| 7 | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "base/compiler_specific.h" | |
| 12 #include "base/memory/scoped_ptr.h" | |
| 13 #include "content/common/content_export.h" | |
| 14 #include "third_party/WebKit/public/platform/WebCrypto.h" | |
| 15 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" | |
| 16 | |
| 17 namespace content { | |
| 18 | |
| 19 namespace webcrypto { | |
| 20 | |
| 21 class CryptoData; | |
| 22 class Status; | |
| 23 | |
| 24 // Do one-time initialization. It is safe to call this multiple times. | |
| 25 // May be called concurrently from multiple threads. | |
| 26 CONTENT_EXPORT void Init(); | |
| 27 | |
| 28 // The functions exported by shared_crypto.h provide a common entry point for | |
| 29 // synchronous crypto operations. | |
| 30 // | |
| 31 // Here is how the layer cake looks. | |
| 32 // | |
| 33 // Blink | |
| 34 // | | |
| 35 // ==============|========================== | |
| 36 // | | |
| 37 // content | |
| 38 // | | |
| 39 // | | |
| 40 // v | |
| 41 // WebCryptoImpl (Implements the blink::WebCrypto interface for | |
| 42 // | asynchronous completions; posts tasks to | |
| 43 // | the webcrypto worker pool to fulfill the request | |
| 44 // using the synchronous methods of shared_crypto.h) | |
| 45 // | | |
| 46 // | [shared_crypto_unittest.cc] | |
| 47 // | / | |
| 48 // | / (The blink::WebCrypto interface is not | |
| 49 // | / testable from the chromium side because | |
| 50 // | / the result object is not mockable. | |
| 51 // | / Tests are done on shared_crypto instead. | |
| 52 // V v | |
| 53 // [shared_crypto.h] (Exposes synchronous functions in the | |
| 54 // | webcrypto:: namespace. This does | |
| 55 // | common validations, infers default | |
| 56 // | parameters, and casts the algorithm | |
| 57 // | parameters to the right types) | |
| 58 // | | |
| 59 // V | |
| 60 // [platform_crypto.h] (Exposes functions in the webcrypto::platform | |
| 61 // | namespace) | |
| 62 // | | |
| 63 // | | |
| 64 // V | |
| 65 // [platform_crypto_{nss|openssl}.cc] (Implements using the platform crypto | |
| 66 // library) | |
| 67 // | |
| 68 // The shared_crypto.h functions are responsible for: | |
| 69 // | |
| 70 // * Validating the key usages | |
| 71 // * Inferring default parameters when not specified | |
| 72 // * Validating key exportability | |
| 73 // * Validating algorithm with key.algorithm | |
| 74 // * Converting the Blink key to a more specific platform::{PublicKey, | |
| 75 // PrivateKey, SymKey} and making sure it was the right type. | |
| 76 // * Validating alogorithm specific parameters (for instance, was the iv for | |
| 77 // AES-CBC 16 bytes). | |
| 78 // * Parse a JWK | |
| 79 | |
| 80 CONTENT_EXPORT Status Encrypt(const blink::WebCryptoAlgorithm& algorithm, | |
| 81 const blink::WebCryptoKey& key, | |
| 82 const CryptoData& data, | |
| 83 std::vector<uint8>* buffer); | |
| 84 | |
| 85 CONTENT_EXPORT Status Decrypt(const blink::WebCryptoAlgorithm& algorithm, | |
| 86 const blink::WebCryptoKey& key, | |
| 87 const CryptoData& data, | |
| 88 std::vector<uint8>* buffer); | |
| 89 | |
| 90 CONTENT_EXPORT Status Digest(const blink::WebCryptoAlgorithm& algorithm, | |
| 91 const CryptoData& data, | |
| 92 std::vector<uint8>* buffer); | |
| 93 | |
| 94 CONTENT_EXPORT scoped_ptr<blink::WebCryptoDigestor> CreateDigestor( | |
| 95 blink::WebCryptoAlgorithmId algorithm); | |
| 96 | |
| 97 CONTENT_EXPORT Status | |
| 98 GenerateSecretKey(const blink::WebCryptoAlgorithm& algorithm, | |
| 99 bool extractable, | |
| 100 blink::WebCryptoKeyUsageMask usage_mask, | |
| 101 blink::WebCryptoKey* key); | |
| 102 | |
| 103 CONTENT_EXPORT Status | |
| 104 GenerateKeyPair(const blink::WebCryptoAlgorithm& algorithm, | |
| 105 bool extractable, | |
| 106 blink::WebCryptoKeyUsageMask usage_mask, | |
| 107 blink::WebCryptoKey* public_key, | |
| 108 blink::WebCryptoKey* private_key); | |
| 109 | |
| 110 CONTENT_EXPORT Status ImportKey(blink::WebCryptoKeyFormat format, | |
| 111 const CryptoData& key_data, | |
| 112 const blink::WebCryptoAlgorithm& algorithm, | |
| 113 bool extractable, | |
| 114 blink::WebCryptoKeyUsageMask usage_mask, | |
| 115 blink::WebCryptoKey* key); | |
| 116 | |
| 117 CONTENT_EXPORT Status ExportKey(blink::WebCryptoKeyFormat format, | |
| 118 const blink::WebCryptoKey& key, | |
| 119 std::vector<uint8>* buffer); | |
| 120 | |
| 121 CONTENT_EXPORT Status Sign(const blink::WebCryptoAlgorithm& algorithm, | |
| 122 const blink::WebCryptoKey& key, | |
| 123 const CryptoData& data, | |
| 124 std::vector<uint8>* buffer); | |
| 125 | |
| 126 CONTENT_EXPORT Status | |
| 127 VerifySignature(const blink::WebCryptoAlgorithm& algorithm, | |
| 128 const blink::WebCryptoKey& key, | |
| 129 const CryptoData& signature, | |
| 130 const CryptoData& data, | |
| 131 bool* signature_match); | |
| 132 | |
| 133 CONTENT_EXPORT Status | |
| 134 WrapKey(blink::WebCryptoKeyFormat format, | |
| 135 const blink::WebCryptoKey& key_to_wrap, | |
| 136 const blink::WebCryptoKey& wrapping_key, | |
| 137 const blink::WebCryptoAlgorithm& wrapping_algorithm, | |
| 138 std::vector<uint8>* buffer); | |
| 139 | |
| 140 CONTENT_EXPORT Status | |
| 141 UnwrapKey(blink::WebCryptoKeyFormat format, | |
| 142 const CryptoData& wrapped_key_data, | |
| 143 const blink::WebCryptoKey& wrapping_key, | |
| 144 const blink::WebCryptoAlgorithm& wrapping_algorithm, | |
| 145 const blink::WebCryptoAlgorithm& algorithm, | |
| 146 bool extractable, | |
| 147 blink::WebCryptoKeyUsageMask usage_mask, | |
| 148 blink::WebCryptoKey* key); | |
| 149 | |
| 150 // Called on the target Blink thread. | |
| 151 CONTENT_EXPORT bool SerializeKeyForClone(const blink::WebCryptoKey& key, | |
| 152 blink::WebVector<uint8>* key_data); | |
| 153 | |
| 154 // Called on the target Blink thread. | |
| 155 CONTENT_EXPORT bool DeserializeKeyForClone( | |
| 156 const blink::WebCryptoKeyAlgorithm& algorithm, | |
| 157 blink::WebCryptoKeyType type, | |
| 158 bool extractable, | |
| 159 blink::WebCryptoKeyUsageMask usage_mask, | |
| 160 const CryptoData& key_data, | |
| 161 blink::WebCryptoKey* key); | |
| 162 | |
| 163 namespace platform { | |
| 164 class SymKey; | |
| 165 class PublicKey; | |
| 166 class PrivateKey; | |
| 167 } | |
| 168 | |
| 169 Status ToPlatformSymKey(const blink::WebCryptoKey& key, platform::SymKey** out); | |
| 170 | |
| 171 Status ToPlatformPublicKey(const blink::WebCryptoKey& key, | |
| 172 platform::PublicKey** out); | |
| 173 | |
| 174 Status ToPlatformPrivateKey(const blink::WebCryptoKey& key, | |
| 175 platform::PrivateKey** out); | |
| 176 | |
| 177 // Returns Staus::Success() if |usages| is valid for |key_type| and |algorithm|. | |
| 178 // Otherwise returns a failure | |
| 179 Status CheckKeyUsages(blink::WebCryptoAlgorithmId algorithm, | |
| 180 blink::WebCryptoKeyType key_type, | |
| 181 blink::WebCryptoKeyUsageMask usages); | |
| 182 | |
| 183 } // namespace webcrypto | |
| 184 | |
| 185 } // namespace content | |
| 186 | |
| 187 #endif // CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_ | |
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