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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 #include "content/child/webcrypto/openssl/aes_algorithm_openssl.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "content/child/webcrypto/crypto_data.h" | |
| 9 #include "content/child/webcrypto/jwk.h" | |
| 10 #include "content/child/webcrypto/openssl/key_openssl.h" | |
| 11 #include "content/child/webcrypto/openssl/util_openssl.h" | |
| 12 #include "content/child/webcrypto/status.h" | |
| 13 #include "content/child/webcrypto/webcrypto_util.h" | |
| 14 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" | |
| 15 | |
| 16 namespace content { | |
| 17 | |
| 18 namespace webcrypto { | |
| 19 | |
| 20 AesAlgorithm::AesAlgorithm(blink::WebCryptoKeyUsageMask all_key_usages, | |
| 21 const std::string& jwk_suffix) | |
| 22 : all_key_usages_(all_key_usages), jwk_suffix_(jwk_suffix) { | |
| 23 } | |
| 24 | |
| 25 AesAlgorithm::AesAlgorithm(const std::string& jwk_suffix) | |
| 26 : all_key_usages_(blink::WebCryptoKeyUsageEncrypt | | |
| 27 blink::WebCryptoKeyUsageDecrypt | | |
| 28 blink::WebCryptoKeyUsageWrapKey | | |
| 29 blink::WebCryptoKeyUsageUnwrapKey), | |
| 30 jwk_suffix_(jwk_suffix) { | |
| 31 } | |
| 32 | |
| 33 Status AesAlgorithm::GenerateKey(const blink::WebCryptoAlgorithm& algorithm, | |
| 34 bool extractable, | |
| 35 blink::WebCryptoKeyUsageMask usages, | |
| 36 GenerateKeyResult* result) const { | |
| 37 Status status = CheckKeyCreationUsages(all_key_usages_, usages, false); | |
| 38 if (status.IsError()) | |
| 39 return status; | |
| 40 | |
| 41 unsigned int keylen_bits; | |
| 42 status = GetAesKeyGenLengthInBits(algorithm.aesKeyGenParams(), &keylen_bits); | |
| 43 if (status.IsError()) | |
| 44 return status; | |
| 45 | |
| 46 return GenerateWebCryptoSecretKey( | |
| 47 blink::WebCryptoKeyAlgorithm::createAes(algorithm.id(), keylen_bits), | |
| 48 extractable, usages, keylen_bits, result); | |
| 49 } | |
| 50 | |
| 51 Status AesAlgorithm::VerifyKeyUsagesBeforeImportKey( | |
| 52 blink::WebCryptoKeyFormat format, | |
| 53 blink::WebCryptoKeyUsageMask usages) const { | |
| 54 switch (format) { | |
| 55 case blink::WebCryptoKeyFormatRaw: | |
| 56 case blink::WebCryptoKeyFormatJwk: | |
| 57 return CheckKeyCreationUsages(all_key_usages_, usages, false); | |
| 58 default: | |
| 59 return Status::ErrorUnsupportedImportKeyFormat(); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 Status AesAlgorithm::ImportKeyRaw(const CryptoData& key_data, | |
| 64 const blink::WebCryptoAlgorithm& algorithm, | |
| 65 bool extractable, | |
| 66 blink::WebCryptoKeyUsageMask usages, | |
| 67 blink::WebCryptoKey* key) const { | |
| 68 const unsigned int keylen_bytes = key_data.byte_length(); | |
| 69 Status status = VerifyAesKeyLengthForImport(keylen_bytes); | |
| 70 if (status.IsError()) | |
| 71 return status; | |
| 72 | |
| 73 // No possibility of overflow. | |
| 74 unsigned int keylen_bits = keylen_bytes * 8; | |
| 75 | |
| 76 return CreateWebCryptoSecretKey( | |
| 77 key_data, | |
| 78 blink::WebCryptoKeyAlgorithm::createAes(algorithm.id(), keylen_bits), | |
| 79 extractable, usages, key); | |
| 80 } | |
| 81 | |
| 82 Status AesAlgorithm::ImportKeyJwk(const CryptoData& key_data, | |
| 83 const blink::WebCryptoAlgorithm& algorithm, | |
| 84 bool extractable, | |
| 85 blink::WebCryptoKeyUsageMask usages, | |
| 86 blink::WebCryptoKey* key) const { | |
| 87 std::vector<uint8_t> raw_data; | |
| 88 Status status = ReadAesSecretKeyJwk(key_data, jwk_suffix_, extractable, | |
| 89 usages, &raw_data); | |
| 90 if (status.IsError()) | |
| 91 return status; | |
| 92 | |
| 93 return ImportKeyRaw(CryptoData(raw_data), algorithm, extractable, usages, | |
| 94 key); | |
| 95 } | |
| 96 | |
| 97 Status AesAlgorithm::ExportKeyRaw(const blink::WebCryptoKey& key, | |
| 98 std::vector<uint8_t>* buffer) const { | |
| 99 *buffer = SymKeyOpenSsl::Cast(key)->raw_key_data(); | |
| 100 return Status::Success(); | |
| 101 } | |
| 102 | |
| 103 Status AesAlgorithm::ExportKeyJwk(const blink::WebCryptoKey& key, | |
| 104 std::vector<uint8_t>* buffer) const { | |
| 105 const std::vector<uint8_t>& raw_data = | |
| 106 SymKeyOpenSsl::Cast(key)->raw_key_data(); | |
| 107 | |
| 108 WriteSecretKeyJwk(CryptoData(raw_data), | |
| 109 MakeJwkAesAlgorithmName(jwk_suffix_, raw_data.size()), | |
| 110 key.extractable(), key.usages(), buffer); | |
| 111 | |
| 112 return Status::Success(); | |
| 113 } | |
| 114 | |
| 115 Status AesAlgorithm::SerializeKeyForClone( | |
| 116 const blink::WebCryptoKey& key, | |
| 117 blink::WebVector<uint8_t>* key_data) const { | |
| 118 key_data->assign(SymKeyOpenSsl::Cast(key)->serialized_key_data()); | |
| 119 return Status::Success(); | |
| 120 } | |
| 121 | |
| 122 Status AesAlgorithm::DeserializeKeyForClone( | |
| 123 const blink::WebCryptoKeyAlgorithm& algorithm, | |
| 124 blink::WebCryptoKeyType type, | |
| 125 bool extractable, | |
| 126 blink::WebCryptoKeyUsageMask usages, | |
| 127 const CryptoData& key_data, | |
| 128 blink::WebCryptoKey* key) const { | |
| 129 return ImportKeyRaw(key_data, CreateAlgorithm(algorithm.id()), extractable, | |
| 130 usages, key); | |
| 131 } | |
| 132 | |
| 133 Status AesAlgorithm::GetKeyLength( | |
| 134 const blink::WebCryptoAlgorithm& key_length_algorithm, | |
| 135 bool* has_length_bits, | |
| 136 unsigned int* length_bits) const { | |
| 137 return GetAesKeyLength(key_length_algorithm, has_length_bits, length_bits); | |
| 138 } | |
| 139 | |
| 140 } // namespace webcrypto | |
| 141 | |
| 142 } // namespace content | |
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Chromium Code Reviews
Issue 1077273002:
html_viewer: Move webcrypto to a place where html_viewer can use it. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master