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27 #include "CryptoAlgorithmRSA_OAEP.h"
29 #if ENABLE(SUBTLE_CRYPTO)
31 #include "CommonCryptoUtilities.h"
32 #include "CryptoAlgorithmRsaOaepParams.h"
33 #include "CryptoKeyRSA.h"
34 #include "ScriptExecutionContext.h"
38 static ExceptionOr<Vector<uint8_t>> encryptRSA_OAEP(CryptoAlgorithmIdentifier hash, const Vector<uint8_t>& label, const PlatformRSAKey key, size_t keyLength, const Vector<uint8_t>& data)
40 CCDigestAlgorithm digestAlgorithm;
41 if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
42 return Exception { OperationError };
44 Vector<uint8_t> cipherText(keyLength / 8); // Per Step 3.c of https://tools.ietf.org/html/rfc3447#section-7.1.1
45 size_t cipherTextLength = cipherText.size();
46 if (CCRSACryptorEncrypt(key, ccOAEPPadding, data.data(), data.size(), cipherText.data(), &cipherTextLength, label.data(), label.size(), digestAlgorithm))
47 return Exception { OperationError };
49 return WTFMove(cipherText);
52 static ExceptionOr<Vector<uint8_t>> decryptRSA_OAEP(CryptoAlgorithmIdentifier hash, const Vector<uint8_t>& label, const PlatformRSAKey key, size_t keyLength, const Vector<uint8_t>& data)
54 CCDigestAlgorithm digestAlgorithm;
55 if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
56 return Exception { OperationError };
58 Vector<uint8_t> plainText(keyLength / 8); // Per Step 1.b of https://tools.ietf.org/html/rfc3447#section-7.1.1
59 size_t plainTextLength = plainText.size();
60 if (CCRSACryptorDecrypt(key, ccOAEPPadding, data.data(), data.size(), plainText.data(), &plainTextLength, label.data(), label.size(), digestAlgorithm))
61 return Exception { OperationError };
63 plainText.resize(plainTextLength);
64 return WTFMove(plainText);
67 void CryptoAlgorithmRSA_OAEP::platformEncrypt(std::unique_ptr<CryptoAlgorithmParameters>&& parameters, Ref<CryptoKey>&& key, Vector<uint8_t>&& plainText, VectorCallback&& callback, ExceptionCallback&& exceptionCallback, ScriptExecutionContext& context, WorkQueue& workQueue)
70 workQueue.dispatch([parameters = WTFMove(parameters), key = WTFMove(key), plainText = WTFMove(plainText), callback = WTFMove(callback), exceptionCallback = WTFMove(exceptionCallback), &context]() mutable {
71 auto& rsaParameters = downcast<CryptoAlgorithmRsaOaepParams>(*parameters);
72 auto& rsaKey = downcast<CryptoKeyRSA>(key.get());
73 auto result = encryptRSA_OAEP(rsaKey.hashAlgorithmIdentifier(), rsaParameters.labelVector(), rsaKey.platformKey(), rsaKey.keySizeInBits(), plainText);
74 if (result.hasException()) {
75 // We should only dereference callbacks after being back to the Document/Worker threads.
76 context.postTask([exceptionCallback = WTFMove(exceptionCallback), ec = result.releaseException().code(), callback = WTFMove(callback)](ScriptExecutionContext& context) {
77 exceptionCallback(ec);
82 // We should only dereference callbacks after being back to the Document/Worker threads.
83 context.postTask([callback = WTFMove(callback), result = result.releaseReturnValue(), exceptionCallback = WTFMove(exceptionCallback)](ScriptExecutionContext& context) {
90 void CryptoAlgorithmRSA_OAEP::platformDecrypt(std::unique_ptr<CryptoAlgorithmParameters>&& parameters, Ref<CryptoKey>&& key, Vector<uint8_t>&& cipherText, VectorCallback&& callback, ExceptionCallback&& exceptionCallback, ScriptExecutionContext& context, WorkQueue& workQueue)
93 workQueue.dispatch([parameters = WTFMove(parameters), key = WTFMove(key), cipherText = WTFMove(cipherText), callback = WTFMove(callback), exceptionCallback = WTFMove(exceptionCallback), &context]() mutable {
94 auto& rsaParameters = downcast<CryptoAlgorithmRsaOaepParams>(*parameters);
95 auto& rsaKey = downcast<CryptoKeyRSA>(key.get());
96 auto result = decryptRSA_OAEP(rsaKey.hashAlgorithmIdentifier(), rsaParameters.labelVector(), rsaKey.platformKey(), rsaKey.keySizeInBits(), cipherText);
97 if (result.hasException()) {
98 // We should only dereference callbacks after being back to the Document/Worker threads.
99 context.postTask([exceptionCallback = WTFMove(exceptionCallback), ec = result.releaseException().code(), callback = WTFMove(callback)](ScriptExecutionContext& context) {
100 exceptionCallback(ec);
105 // We should only dereference callbacks after being back to the Document/Worker threads.
106 context.postTask([callback = WTFMove(callback), result = result.releaseReturnValue(), exceptionCallback = WTFMove(exceptionCallback)](ScriptExecutionContext& context) {
113 } // namespace WebCore
115 #endif // ENABLE(SUBTLE_CRYPTO)