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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 <cryptohi.h> | |
| 6 | |
| 7 #include "content/child/webcrypto/crypto_data.h" | |
| 8 #include "content/child/webcrypto/nss/key_nss.h" | |
| 9 #include "content/child/webcrypto/nss/rsa_hashed_algorithm_nss.h" | |
| 10 #include "content/child/webcrypto/nss/util_nss.h" | |
| 11 #include "content/child/webcrypto/status.h" | |
| 12 #include "crypto/scoped_nss_types.h" | |
| 13 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h" | |
| 14 | |
| 15 namespace content { | |
| 16 | |
| 17 namespace webcrypto { | |
| 18 | |
| 19 namespace { | |
| 20 | |
| 21 class RsaSsaImplementation : public RsaHashedAlgorithm { | |
| 22 public: | |
| 23 RsaSsaImplementation() | |
| 24 : RsaHashedAlgorithm(CKF_SIGN | CKF_VERIFY, | |
| 25 blink::WebCryptoKeyUsageVerify, | |
| 26 blink::WebCryptoKeyUsageSign) {} | |
| 27 | |
| 28 const char* GetJwkAlgorithm( | |
| 29 const blink::WebCryptoAlgorithmId hash) const override { | |
| 30 switch (hash) { | |
| 31 case blink::WebCryptoAlgorithmIdSha1: | |
| 32 return "RS1"; | |
| 33 case blink::WebCryptoAlgorithmIdSha256: | |
| 34 return "RS256"; | |
| 35 case blink::WebCryptoAlgorithmIdSha384: | |
| 36 return "RS384"; | |
| 37 case blink::WebCryptoAlgorithmIdSha512: | |
| 38 return "RS512"; | |
| 39 default: | |
| 40 return NULL; | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 Status Sign(const blink::WebCryptoAlgorithm& algorithm, | |
| 45 const blink::WebCryptoKey& key, | |
| 46 const CryptoData& data, | |
| 47 std::vector<uint8_t>* buffer) const override { | |
| 48 if (key.type() != blink::WebCryptoKeyTypePrivate) | |
| 49 return Status::ErrorUnexpectedKeyType(); | |
| 50 | |
| 51 SECKEYPrivateKey* private_key = PrivateKeyNss::Cast(key)->key(); | |
| 52 | |
| 53 const blink::WebCryptoAlgorithm& hash = | |
| 54 key.algorithm().rsaHashedParams()->hash(); | |
| 55 | |
| 56 // Pick the NSS signing algorithm by combining RSA-SSA (RSA PKCS1) and the | |
| 57 // inner hash of the input Web Crypto algorithm. | |
| 58 SECOidTag sign_alg_tag; | |
| 59 switch (hash.id()) { | |
| 60 case blink::WebCryptoAlgorithmIdSha1: | |
| 61 sign_alg_tag = SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION; | |
| 62 break; | |
| 63 case blink::WebCryptoAlgorithmIdSha256: | |
| 64 sign_alg_tag = SEC_OID_PKCS1_SHA256_WITH_RSA_ENCRYPTION; | |
| 65 break; | |
| 66 case blink::WebCryptoAlgorithmIdSha384: | |
| 67 sign_alg_tag = SEC_OID_PKCS1_SHA384_WITH_RSA_ENCRYPTION; | |
| 68 break; | |
| 69 case blink::WebCryptoAlgorithmIdSha512: | |
| 70 sign_alg_tag = SEC_OID_PKCS1_SHA512_WITH_RSA_ENCRYPTION; | |
| 71 break; | |
| 72 default: | |
| 73 return Status::ErrorUnsupported(); | |
| 74 } | |
| 75 | |
| 76 crypto::ScopedSECItem signature_item(SECITEM_AllocItem(NULL, NULL, 0)); | |
| 77 if (SEC_SignData(signature_item.get(), data.bytes(), data.byte_length(), | |
| 78 private_key, sign_alg_tag) != SECSuccess) { | |
| 79 return Status::OperationError(); | |
| 80 } | |
| 81 | |
| 82 buffer->assign(signature_item->data, | |
| 83 signature_item->data + signature_item->len); | |
| 84 return Status::Success(); | |
| 85 } | |
| 86 | |
| 87 Status Verify(const blink::WebCryptoAlgorithm& algorithm, | |
| 88 const blink::WebCryptoKey& key, | |
| 89 const CryptoData& signature, | |
| 90 const CryptoData& data, | |
| 91 bool* signature_match) const override { | |
| 92 if (key.type() != blink::WebCryptoKeyTypePublic) | |
| 93 return Status::ErrorUnexpectedKeyType(); | |
| 94 | |
| 95 SECKEYPublicKey* public_key = PublicKeyNss::Cast(key)->key(); | |
| 96 | |
| 97 const blink::WebCryptoAlgorithm& hash = | |
| 98 key.algorithm().rsaHashedParams()->hash(); | |
| 99 | |
| 100 const SECItem signature_item = MakeSECItemForBuffer(signature); | |
| 101 | |
| 102 SECOidTag hash_alg_tag; | |
| 103 switch (hash.id()) { | |
| 104 case blink::WebCryptoAlgorithmIdSha1: | |
| 105 hash_alg_tag = SEC_OID_SHA1; | |
| 106 break; | |
| 107 case blink::WebCryptoAlgorithmIdSha256: | |
| 108 hash_alg_tag = SEC_OID_SHA256; | |
| 109 break; | |
| 110 case blink::WebCryptoAlgorithmIdSha384: | |
| 111 hash_alg_tag = SEC_OID_SHA384; | |
| 112 break; | |
| 113 case blink::WebCryptoAlgorithmIdSha512: | |
| 114 hash_alg_tag = SEC_OID_SHA512; | |
| 115 break; | |
| 116 default: | |
| 117 return Status::ErrorUnsupported(); | |
| 118 } | |
| 119 | |
| 120 *signature_match = | |
| 121 SECSuccess == VFY_VerifyDataDirect(data.bytes(), data.byte_length(), | |
| 122 public_key, &signature_item, | |
| 123 SEC_OID_PKCS1_RSA_ENCRYPTION, | |
| 124 hash_alg_tag, NULL, NULL); | |
| 125 return Status::Success(); | |
| 126 } | |
| 127 }; | |
| 128 | |
| 129 } // namespace | |
| 130 | |
| 131 AlgorithmImplementation* CreatePlatformRsaSsaImplementation() { | |
| 132 return new RsaSsaImplementation; | |
| 133 } | |
| 134 | |
| 135 } // namespace webcrypto | |
| 136 | |
| 137 } // 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