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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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