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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 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 #include "content/renderer/webcrypto/webcrypto_util.h" | 5 #include "content/renderer/webcrypto/webcrypto_util.h" |
6 | 6 |
7 #include "base/base64.h" | 7 #include "base/base64.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h" | 9 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h" |
10 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" | 10 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h" |
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154 Status::Status(const char* error_details_utf8) | 154 Status::Status(const char* error_details_utf8) |
155 : error_details_(error_details_utf8) { | 155 : error_details_(error_details_utf8) { |
156 } | 156 } |
157 | 157 |
158 const uint8* Uint8VectorStart(const std::vector<uint8>& data) { | 158 const uint8* Uint8VectorStart(const std::vector<uint8>& data) { |
159 if (data.empty()) | 159 if (data.empty()) |
160 return NULL; | 160 return NULL; |
161 return &data[0]; | 161 return &data[0]; |
162 } | 162 } |
163 | 163 |
164 void ShrinkBuffer(blink::WebArrayBuffer* buffer, unsigned new_size) { | 164 void ShrinkBuffer(blink::WebArrayBuffer* buffer, unsigned int new_size) { |
165 DCHECK_LE(new_size, buffer->byteLength()); | 165 DCHECK_LE(new_size, buffer->byteLength()); |
166 | 166 |
167 if (new_size == buffer->byteLength()) | 167 if (new_size == buffer->byteLength()) |
168 return; | 168 return; |
169 | 169 |
170 blink::WebArrayBuffer new_buffer = blink::WebArrayBuffer::create(new_size, 1); | 170 blink::WebArrayBuffer new_buffer = blink::WebArrayBuffer::create(new_size, 1); |
171 DCHECK(!new_buffer.isNull()); | 171 DCHECK(!new_buffer.isNull()); |
172 memcpy(new_buffer.data(), buffer->data(), new_size); | 172 memcpy(new_buffer.data(), buffer->data(), new_size); |
173 *buffer = new_buffer; | 173 *buffer = new_buffer; |
174 } | 174 } |
175 | 175 |
176 blink::WebArrayBuffer CreateArrayBuffer(const uint8* data, unsigned data_size) { | 176 blink::WebArrayBuffer CreateArrayBuffer(const uint8* data, |
| 177 unsigned int data_size) { |
177 blink::WebArrayBuffer buffer = blink::WebArrayBuffer::create(data_size, 1); | 178 blink::WebArrayBuffer buffer = blink::WebArrayBuffer::create(data_size, 1); |
178 DCHECK(!buffer.isNull()); | 179 DCHECK(!buffer.isNull()); |
179 if (data_size) // data_size == 0 might mean the data pointer is invalid | 180 if (data_size) // data_size == 0 might mean the data pointer is invalid |
180 memcpy(buffer.data(), data, data_size); | 181 memcpy(buffer.data(), data, data_size); |
181 return buffer; | 182 return buffer; |
182 } | 183 } |
183 | 184 |
184 // This function decodes unpadded 'base64url' encoded data, as described in | 185 // This function decodes unpadded 'base64url' encoded data, as described in |
185 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. To do this, first | 186 // RFC4648 (http://www.ietf.org/rfc/rfc4648.txt) Section 5. To do this, first |
186 // change the incoming data to 'base64' encoding by applying the appropriate | 187 // change the incoming data to 'base64' encoding by applying the appropriate |
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233 blink::WebCryptoAlgorithm CreateHmacAlgorithmByHashId( | 234 blink::WebCryptoAlgorithm CreateHmacAlgorithmByHashId( |
234 blink::WebCryptoAlgorithmId hash_id) { | 235 blink::WebCryptoAlgorithmId hash_id) { |
235 DCHECK(IsHashAlgorithm(hash_id)); | 236 DCHECK(IsHashAlgorithm(hash_id)); |
236 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( | 237 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( |
237 blink::WebCryptoAlgorithmIdHmac, | 238 blink::WebCryptoAlgorithmIdHmac, |
238 new blink::WebCryptoHmacParams(CreateAlgorithm(hash_id))); | 239 new blink::WebCryptoHmacParams(CreateAlgorithm(hash_id))); |
239 } | 240 } |
240 | 241 |
241 blink::WebCryptoAlgorithm CreateHmacKeyGenAlgorithm( | 242 blink::WebCryptoAlgorithm CreateHmacKeyGenAlgorithm( |
242 blink::WebCryptoAlgorithmId hash_id, | 243 blink::WebCryptoAlgorithmId hash_id, |
243 unsigned key_length_bytes) { | 244 unsigned int key_length_bytes) { |
244 DCHECK(IsHashAlgorithm(hash_id)); | 245 DCHECK(IsHashAlgorithm(hash_id)); |
245 // key_length_bytes == 0 means unspecified | 246 // key_length_bytes == 0 means unspecified |
246 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( | 247 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( |
247 blink::WebCryptoAlgorithmIdHmac, | 248 blink::WebCryptoAlgorithmIdHmac, |
248 new blink::WebCryptoHmacKeyParams( | 249 new blink::WebCryptoHmacKeyParams( |
249 CreateAlgorithm(hash_id), (key_length_bytes != 0), key_length_bytes)); | 250 CreateAlgorithm(hash_id), (key_length_bytes != 0), key_length_bytes)); |
250 } | 251 } |
251 | 252 |
252 blink::WebCryptoAlgorithm CreateRsaSsaAlgorithm( | 253 blink::WebCryptoAlgorithm CreateRsaSsaAlgorithm( |
253 blink::WebCryptoAlgorithmId hash_id) { | 254 blink::WebCryptoAlgorithmId hash_id) { |
254 DCHECK(IsHashAlgorithm(hash_id)); | 255 DCHECK(IsHashAlgorithm(hash_id)); |
255 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( | 256 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( |
256 blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5, | 257 blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5, |
257 new blink::WebCryptoRsaSsaParams(CreateAlgorithm(hash_id))); | 258 new blink::WebCryptoRsaSsaParams(CreateAlgorithm(hash_id))); |
258 } | 259 } |
259 | 260 |
260 blink::WebCryptoAlgorithm CreateRsaOaepAlgorithm( | 261 blink::WebCryptoAlgorithm CreateRsaOaepAlgorithm( |
261 blink::WebCryptoAlgorithmId hash_id) { | 262 blink::WebCryptoAlgorithmId hash_id) { |
262 DCHECK(IsHashAlgorithm(hash_id)); | 263 DCHECK(IsHashAlgorithm(hash_id)); |
263 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( | 264 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( |
264 blink::WebCryptoAlgorithmIdRsaOaep, | 265 blink::WebCryptoAlgorithmIdRsaOaep, |
265 new blink::WebCryptoRsaOaepParams( | 266 new blink::WebCryptoRsaOaepParams( |
266 CreateAlgorithm(hash_id), false, NULL, 0)); | 267 CreateAlgorithm(hash_id), false, NULL, 0)); |
267 } | 268 } |
268 | 269 |
269 blink::WebCryptoAlgorithm CreateRsaKeyGenAlgorithm( | 270 blink::WebCryptoAlgorithm CreateRsaKeyGenAlgorithm( |
270 blink::WebCryptoAlgorithmId algorithm_id, | 271 blink::WebCryptoAlgorithmId algorithm_id, |
271 unsigned modulus_length, | 272 unsigned int modulus_length, |
272 const std::vector<uint8>& public_exponent) { | 273 const std::vector<uint8>& public_exponent) { |
273 DCHECK(algorithm_id == blink::WebCryptoAlgorithmIdRsaEsPkcs1v1_5 || | 274 DCHECK(algorithm_id == blink::WebCryptoAlgorithmIdRsaEsPkcs1v1_5 || |
274 algorithm_id == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 || | 275 algorithm_id == blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5 || |
275 algorithm_id == blink::WebCryptoAlgorithmIdRsaOaep); | 276 algorithm_id == blink::WebCryptoAlgorithmIdRsaOaep); |
276 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( | 277 return blink::WebCryptoAlgorithm::adoptParamsAndCreate( |
277 algorithm_id, | 278 algorithm_id, |
278 new blink::WebCryptoRsaKeyGenParams( | 279 new blink::WebCryptoRsaKeyGenParams( |
279 modulus_length, | 280 modulus_length, |
280 webcrypto::Uint8VectorStart(public_exponent), | 281 webcrypto::Uint8VectorStart(public_exponent), |
281 public_exponent.size())); | 282 public_exponent.size())); |
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313 return 128; | 314 return 128; |
314 default: | 315 default: |
315 NOTREACHED(); | 316 NOTREACHED(); |
316 return 0; | 317 return 0; |
317 } | 318 } |
318 } | 319 } |
319 | 320 |
320 } // namespace webcrypto | 321 } // namespace webcrypto |
321 | 322 |
322 } // namespace content | 323 } // namespace content |
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