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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_UTIL_H_ | 5 #ifndef CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_UTIL_H_ |
6 #define CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_UTIL_H_ | 6 #define CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_UTIL_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 #include <vector> | 10 #include <vector> |
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176 }; | 176 }; |
177 | 177 |
178 // Returns a pointer to the start of |data|, or NULL if it is empty. This is a | 178 // Returns a pointer to the start of |data|, or NULL if it is empty. This is a |
179 // convenience function for getting the pointer, and should not be used beyond | 179 // convenience function for getting the pointer, and should not be used beyond |
180 // the expected lifetime of |data|. | 180 // the expected lifetime of |data|. |
181 CONTENT_EXPORT const uint8* Uint8VectorStart(const std::vector<uint8>& data); | 181 CONTENT_EXPORT const uint8* Uint8VectorStart(const std::vector<uint8>& data); |
182 | 182 |
183 // Shrinks a WebArrayBuffer to a new size. | 183 // Shrinks a WebArrayBuffer to a new size. |
184 // TODO(eroman): This works by re-allocating a new buffer. It would be better if | 184 // TODO(eroman): This works by re-allocating a new buffer. It would be better if |
185 // the WebArrayBuffer could just be truncated instead. | 185 // the WebArrayBuffer could just be truncated instead. |
186 void ShrinkBuffer(blink::WebArrayBuffer* buffer, unsigned new_size); | 186 void ShrinkBuffer(blink::WebArrayBuffer* buffer, unsigned int new_size); |
187 | 187 |
188 // Creates a WebArrayBuffer from a uint8 byte array | 188 // Creates a WebArrayBuffer from a uint8 byte array |
189 blink::WebArrayBuffer CreateArrayBuffer(const uint8* data, unsigned data_size); | 189 blink::WebArrayBuffer CreateArrayBuffer(const uint8* data, |
| 190 unsigned int data_size); |
190 | 191 |
191 // This function decodes unpadded 'base64url' encoded data, as described in | 192 // This function decodes unpadded 'base64url' encoded data, as described in |
192 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. | 193 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. |
193 // In Web Crypto, this type of encoding is only used inside JWK. | 194 // In Web Crypto, this type of encoding is only used inside JWK. |
194 bool Base64DecodeUrlSafe(const std::string& input, std::string* output); | 195 bool Base64DecodeUrlSafe(const std::string& input, std::string* output); |
195 | 196 |
196 CONTENT_EXPORT bool IsHashAlgorithm(blink::WebCryptoAlgorithmId alg_id); | 197 CONTENT_EXPORT bool IsHashAlgorithm(blink::WebCryptoAlgorithmId alg_id); |
197 | 198 |
198 // Returns the "hash" param for an algorithm if it exists, otherwise returns | 199 // Returns the "hash" param for an algorithm if it exists, otherwise returns |
199 // a null algorithm. | 200 // a null algorithm. |
200 blink::WebCryptoAlgorithm GetInnerHashAlgorithm( | 201 blink::WebCryptoAlgorithm GetInnerHashAlgorithm( |
201 const blink::WebCryptoAlgorithm& algorithm); | 202 const blink::WebCryptoAlgorithm& algorithm); |
202 | 203 |
203 // Creates a WebCryptoAlgorithm without any parameters. | 204 // Creates a WebCryptoAlgorithm without any parameters. |
204 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateAlgorithm( | 205 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateAlgorithm( |
205 blink::WebCryptoAlgorithmId id); | 206 blink::WebCryptoAlgorithmId id); |
206 | 207 |
207 // Creates an HMAC algorithm whose inner hash algorithm is determined by the | 208 // Creates an HMAC algorithm whose inner hash algorithm is determined by the |
208 // specified algorithm ID. It is an error to call this method with a hash | 209 // specified algorithm ID. It is an error to call this method with a hash |
209 // algorithm that is not SHA*. | 210 // algorithm that is not SHA*. |
210 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateHmacAlgorithmByHashId( | 211 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateHmacAlgorithmByHashId( |
211 blink::WebCryptoAlgorithmId hash_id); | 212 blink::WebCryptoAlgorithmId hash_id); |
212 | 213 |
213 // Creates an HMAC algorithm whose parameters struct is compatible with key | 214 // Creates an HMAC algorithm whose parameters struct is compatible with key |
214 // generation. It is an error to call this with a hash_id that is not a SHA*. | 215 // generation. It is an error to call this with a hash_id that is not a SHA*. |
215 // The key_length_bytes parameter is optional, with zero meaning unspecified. | 216 // The key_length_bytes parameter is optional, with zero meaning unspecified. |
216 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateHmacKeyGenAlgorithm( | 217 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateHmacKeyGenAlgorithm( |
217 blink::WebCryptoAlgorithmId hash_id, | 218 blink::WebCryptoAlgorithmId hash_id, |
218 unsigned key_length_bytes); | 219 unsigned int key_length_bytes); |
219 | 220 |
220 // Creates an RSASSA-PKCS1-v1_5 algorithm. It is an error to call this with a | 221 // Creates an RSASSA-PKCS1-v1_5 algorithm. It is an error to call this with a |
221 // hash_id that is not a SHA*. | 222 // hash_id that is not a SHA*. |
222 blink::WebCryptoAlgorithm CreateRsaSsaAlgorithm( | 223 blink::WebCryptoAlgorithm CreateRsaSsaAlgorithm( |
223 blink::WebCryptoAlgorithmId hash_id); | 224 blink::WebCryptoAlgorithmId hash_id); |
224 | 225 |
225 // Creates an RSA-OAEP algorithm. It is an error to call this with a hash_id | 226 // Creates an RSA-OAEP algorithm. It is an error to call this with a hash_id |
226 // that is not a SHA*. | 227 // that is not a SHA*. |
227 blink::WebCryptoAlgorithm CreateRsaOaepAlgorithm( | 228 blink::WebCryptoAlgorithm CreateRsaOaepAlgorithm( |
228 blink::WebCryptoAlgorithmId hash_id); | 229 blink::WebCryptoAlgorithmId hash_id); |
229 | 230 |
230 // Creates an RSA algorithm with ID algorithm_id, whose parameters struct is | 231 // Creates an RSA algorithm with ID algorithm_id, whose parameters struct is |
231 // compatible with key generation. | 232 // compatible with key generation. |
232 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateRsaKeyGenAlgorithm( | 233 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateRsaKeyGenAlgorithm( |
233 blink::WebCryptoAlgorithmId algorithm_id, | 234 blink::WebCryptoAlgorithmId algorithm_id, |
234 unsigned modulus_length, | 235 unsigned int modulus_length, |
235 const std::vector<uint8>& public_exponent); | 236 const std::vector<uint8>& public_exponent); |
236 | 237 |
237 // Creates an AES-CBC algorithm. | 238 // Creates an AES-CBC algorithm. |
238 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateAesCbcAlgorithm( | 239 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateAesCbcAlgorithm( |
239 const std::vector<uint8>& iv); | 240 const std::vector<uint8>& iv); |
240 | 241 |
241 // Creates and AES-GCM algorithm. | 242 // Creates and AES-GCM algorithm. |
242 blink::WebCryptoAlgorithm CreateAesGcmAlgorithm( | 243 blink::WebCryptoAlgorithm CreateAesGcmAlgorithm( |
243 const std::vector<uint8>& iv, | 244 const std::vector<uint8>& iv, |
244 const std::vector<uint8>& additional_data, | 245 const std::vector<uint8>& additional_data, |
245 uint8 tag_length_bytes); | 246 uint8 tag_length_bytes); |
246 | 247 |
247 // Returns the internal block size for SHA-* | 248 // Returns the internal block size for SHA-* |
248 unsigned int ShaBlockSizeBytes(blink::WebCryptoAlgorithmId hash_id); | 249 unsigned int ShaBlockSizeBytes(blink::WebCryptoAlgorithmId hash_id); |
249 | 250 |
250 } // namespace webcrypto | 251 } // namespace webcrypto |
251 | 252 |
252 } // namespace content | 253 } // namespace content |
253 | 254 |
254 #endif // CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_UTIL_H_ | 255 #endif // CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_UTIL_H_ |
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