// FIXME: We should change data to Vector<uint8_t> type once WebKitSubtleCrypto is deprecated.
// https://bugs.webkit.org/show_bug.cgi?id=164939
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)
{
CCDigestAlgorithm digestAlgorithm;
if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
return Exception { OperationError };
Vector<uint8_t> plainText(keyLength / 8); // Per Step 1.b of https://tools.ietf.org/html/rfc3447#section-7.1.1
size_t plainTextLength = plainText.size();
if (CCRSACryptorDecrypt(key, ccOAEPPadding, data, dataLength, plainText.data(), &plainTextLength, label.data(), label.size(), digestAlgorithm))
return Exception { OperationError };
plainText.resize(plainTextLength);
return WTFMove(plainText);
}
void CryptoAlgorithmRSA_OAEP::platformDecrypt(const CryptoAlgorithmRsaOaepParams& parameters, const CryptoKeyRSA& key, const CryptoOperationData& data, VectorCallback&& callback, VoidCallback&& failureCallback, ExceptionCode& ec)
{
CCDigestAlgorithm digestAlgorithm;
if (!getCommonCryptoDigestAlgorithm(parameters.hash, digestAlgorithm)) {
ec = NOT_SUPPORTED_ERR;
return;
}
Vector<uint8_t> plainText(1024);
size_t plainTextLength = plainText.size();
CCCryptorStatus status = CCRSACryptorDecrypt(key.platformKey(), ccOAEPPadding, data.first, data.second, plainText.data(), &plainTextLength, parameters.label.data(), parameters.label.size(), digestAlgorithm);
if (status) {
failureCallback();
return;
}
plainText.resize(plainTextLength);
callback(plainText);
}
