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27 #include "CryptoAlgorithmRSA_OAEP.h"
29 #if ENABLE(SUBTLE_CRYPTO)
31 #include "CommonCryptoUtilities.h"
32 #include "CryptoAlgorithmRsaOaepParams.h"
33 #include "CryptoAlgorithmRsaOaepParamsDeprecated.h"
34 #include "CryptoKeyRSA.h"
35 #include "ExceptionCode.h"
36 #include "ScriptExecutionContext.h"
40 // FIXME: We should change data to Vector<uint8_t> type once WebKitSubtleCrypto is deprecated.
41 // https://bugs.webkit.org/show_bug.cgi?id=164939
42 static ExceptionOr<Vector<uint8_t>> encryptRSA_OAEP(CryptoAlgorithmIdentifier hash, const Vector<uint8_t>& label, const PlatformRSAKey key, size_t keyLength, const uint8_t* data, size_t dataLength)
44 CCDigestAlgorithm digestAlgorithm;
45 if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
46 return Exception { OperationError };
48 Vector<uint8_t> cipherText(keyLength / 8); // Per Step 3.c of https://tools.ietf.org/html/rfc3447#section-7.1.1
49 size_t cipherTextLength = cipherText.size();
50 if (CCRSACryptorEncrypt(key, ccOAEPPadding, data, dataLength, cipherText.data(), &cipherTextLength, label.data(), label.size(), digestAlgorithm))
51 return Exception { OperationError };
53 return WTFMove(cipherText);
56 // FIXME: We should change data to Vector<uint8_t> type once WebKitSubtleCrypto is deprecated.
57 // https://bugs.webkit.org/show_bug.cgi?id=164939
58 static ExceptionOr<Vector<uint8_t>> decryptRSA_OAEP(CryptoAlgorithmIdentifier hash, const Vector<uint8_t>& label, const PlatformRSAKey key, size_t keyLength, const uint8_t* data, size_t dataLength)
60 CCDigestAlgorithm digestAlgorithm;
61 if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
62 return Exception { OperationError };
64 Vector<uint8_t> plainText(keyLength / 8); // Per Step 1.b of https://tools.ietf.org/html/rfc3447#section-7.1.1
65 size_t plainTextLength = plainText.size();
66 if (CCRSACryptorDecrypt(key, ccOAEPPadding, data, dataLength, plainText.data(), &plainTextLength, label.data(), label.size(), digestAlgorithm))
67 return Exception { OperationError };
69 plainText.resize(plainTextLength);
70 return WTFMove(plainText);
73 void CryptoAlgorithmRSA_OAEP::platformEncrypt(std::unique_ptr<CryptoAlgorithmParameters>&& parameters, Ref<CryptoKey>&& key, Vector<uint8_t>&& plainText, VectorCallback&& callback, ExceptionCallback&& exceptionCallback, ScriptExecutionContext& context, WorkQueue& workQueue)
76 workQueue.dispatch([parameters = WTFMove(parameters), key = WTFMove(key), plainText = WTFMove(plainText), callback = WTFMove(callback), exceptionCallback = WTFMove(exceptionCallback), &context]() mutable {
77 auto& rsaParameters = downcast<CryptoAlgorithmRsaOaepParams>(*parameters);
78 auto& rsaKey = downcast<CryptoKeyRSA>(key.get());
79 auto result = encryptRSA_OAEP(rsaKey.hashAlgorithmIdentifier(), rsaParameters.labelVector(), rsaKey.platformKey(), rsaKey.keySizeInBits(), plainText.data(), plainText.size());
80 if (result.hasException()) {
81 // We should only derenference callbacks after being back to the Document/Worker threads.
82 context.postTask([exceptionCallback = WTFMove(exceptionCallback), ec = result.releaseException().code(), callback = WTFMove(callback)](ScriptExecutionContext& context) {
83 exceptionCallback(ec);
88 // We should only derenference callbacks after being back to the Document/Worker threads.
89 context.postTask([callback = WTFMove(callback), result = result.releaseReturnValue(), exceptionCallback = WTFMove(exceptionCallback)](ScriptExecutionContext& context) {
96 void CryptoAlgorithmRSA_OAEP::platformDecrypt(std::unique_ptr<CryptoAlgorithmParameters>&& parameters, Ref<CryptoKey>&& key, Vector<uint8_t>&& cipherText, VectorCallback&& callback, ExceptionCallback&& exceptionCallback, ScriptExecutionContext& context, WorkQueue& workQueue)
99 workQueue.dispatch([parameters = WTFMove(parameters), key = WTFMove(key), cipherText = WTFMove(cipherText), callback = WTFMove(callback), exceptionCallback = WTFMove(exceptionCallback), &context]() mutable {
100 auto& rsaParameters = downcast<CryptoAlgorithmRsaOaepParams>(*parameters);
101 auto& rsaKey = downcast<CryptoKeyRSA>(key.get());
102 auto result = decryptRSA_OAEP(rsaKey.hashAlgorithmIdentifier(), rsaParameters.labelVector(), rsaKey.platformKey(), rsaKey.keySizeInBits(), cipherText.data(), cipherText.size());
103 if (result.hasException()) {
104 // We should only derenference callbacks after being back to the Document/Worker threads.
105 context.postTask([exceptionCallback = WTFMove(exceptionCallback), ec = result.releaseException().code(), callback = WTFMove(callback)](ScriptExecutionContext& context) {
106 exceptionCallback(ec);
111 // We should only derenference callbacks after being back to the Document/Worker threads.
112 context.postTask([callback = WTFMove(callback), result = result.releaseReturnValue(), exceptionCallback = WTFMove(exceptionCallback)](ScriptExecutionContext& context) {
119 ExceptionOr<void> CryptoAlgorithmRSA_OAEP::platformEncrypt(const CryptoAlgorithmRsaOaepParamsDeprecated& parameters, const CryptoKeyRSA& key, const CryptoOperationData& data, VectorCallback&& callback, VoidCallback&& failureCallback)
121 ASSERT(parameters.hasLabel || parameters.label.isEmpty());
122 auto result = encryptRSA_OAEP(parameters.hash, parameters.label, key.platformKey(), key.keySizeInBits(), data.first, data.second);
123 if (result.hasException()) {
127 callback(result.releaseReturnValue());
131 ExceptionOr<void> CryptoAlgorithmRSA_OAEP::platformDecrypt(const CryptoAlgorithmRsaOaepParamsDeprecated& parameters, const CryptoKeyRSA& key, const CryptoOperationData& data, VectorCallback&& callback, VoidCallback&& failureCallback)
133 ASSERT(parameters.hasLabel || parameters.label.isEmpty());
134 auto result = decryptRSA_OAEP(parameters.hash, parameters.label, key.platformKey(), key.keySizeInBits(), data.first, data.second);
135 if (result.hasException()) {
139 callback(result.releaseReturnValue());
143 } // namespace WebCore
145 #endif // ENABLE(SUBTLE_CRYPTO)