void CryptoAlgorithmRSASSA_PKCS1_v1_5::platformSign(const CryptoAlgorithmRsaSsaParams& 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;
}
std::unique_ptr<CryptoDigest> digest = CryptoDigest::create(parameters.hash);
if (!digest) {
ec = NOT_SUPPORTED_ERR;
return;
}
digest->addBytes(data.first, data.second);
Vector<uint8_t> digestData = digest->computeHash();
Vector<uint8_t> signature(512);
size_t signatureSize = signature.size();
CCCryptorStatus status = CCRSACryptorSign(key.platformKey(), ccPKCS1Padding, digestData.data(), digestData.size(), digestAlgorithm, 0, signature.data(), &signatureSize);
if (status) {
failureCallback();
return;
}
signature.resize(signatureSize);
callback(signature);
}
void CryptoAlgorithmRSASSA_PKCS1_v1_5::sign(const CryptoAlgorithmParameters& parameters, const CryptoKey& key, const CryptoOperationData& data, std::unique_ptr<PromiseWrapper> promise, ExceptionCode& ec)
{
const CryptoAlgorithmRsaSsaParams& rsaSSAParameters = toCryptoAlgorithmRsaSsaParams(parameters);
if (!isCryptoKeyRSA(key)) {
ec = NOT_SUPPORTED_ERR;
return;
}
const CryptoKeyRSA& rsaKey = toCryptoKeyRSA(key);
CCDigestAlgorithm digestAlgorithm;
if (!getCommonCryptoDigestAlgorithm(rsaSSAParameters.hash, digestAlgorithm)) {
ec = NOT_SUPPORTED_ERR;
return;
}
std::unique_ptr<CryptoDigest> digest = CryptoDigest::create(rsaSSAParameters.hash);
if (!digest) {
ec = NOT_SUPPORTED_ERR;
return;
}
digest->addBytes(data.first, data.second);
Vector<uint8_t> digestData = digest->computeHash();
Vector<uint8_t> signature(512);
size_t signatureSize = signature.size();
CCCryptorStatus status = CCRSACryptorSign(rsaKey.platformKey(), ccPKCS1Padding, digestData.data(), digestData.size(), digestAlgorithm, 0, signature.data(), &signatureSize);
if (status) {
promise->reject(nullptr);
return;
}
signature.resize(signatureSize);
promise->fulfill(signature);
}
