CryptoAlgorithmRSA_PSSMac.cpp [plain text]
#include "config.h"
#include "CryptoAlgorithmRSA_PSS.h"
#if ENABLE(SUBTLE_CRYPTO) && HAVE(RSA_PSS)
#include "CommonCryptoUtilities.h"
#include "CryptoAlgorithmRsaPssParams.h"
#include "CryptoDigestAlgorithm.h"
#include "CryptoKeyRSA.h"
namespace WebCore {
static ExceptionOr<Vector<uint8_t>> signRSA_PSS(CryptoAlgorithmIdentifier hash, const PlatformRSAKey key, size_t keyLength, const Vector<uint8_t>& data, size_t saltLength)
{
CCDigestAlgorithm digestAlgorithm;
if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
return Exception { OperationError };
auto cryptoDigestAlgorithm = WebCore::cryptoDigestAlgorithm(hash);
if (!cryptoDigestAlgorithm)
return Exception { OperationError };
auto digest = PAL::CryptoDigest::create(*cryptoDigestAlgorithm);
if (!digest)
return Exception { OperationError };
digest->addBytes(data.data(), data.size());
auto digestData = digest->computeHash();
Vector<uint8_t> signature(keyLength / 8); size_t signatureSize = signature.size();
CCCryptorStatus status = CCRSACryptorSign(key, ccRSAPSSPadding, digestData.data(), digestData.size(), digestAlgorithm, saltLength, signature.data(), &signatureSize);
if (status)
return Exception { OperationError };
return WTFMove(signature);
}
static ExceptionOr<bool> verifyRSA_PSS(CryptoAlgorithmIdentifier hash, const PlatformRSAKey key, const Vector<uint8_t>& signature, const Vector<uint8_t>& data, size_t saltLength)
{
CCDigestAlgorithm digestAlgorithm;
if (!getCommonCryptoDigestAlgorithm(hash, digestAlgorithm))
return Exception { OperationError };
auto cryptoDigestAlgorithm = WebCore::cryptoDigestAlgorithm(hash);
if (!cryptoDigestAlgorithm)
return Exception { OperationError };
auto digest = PAL::CryptoDigest::create(*cryptoDigestAlgorithm);
if (!digest)
return Exception { OperationError };
digest->addBytes(data.data(), data.size());
auto digestData = digest->computeHash();
auto status = CCRSACryptorVerify(key, ccRSAPSSPadding, digestData.data(), digestData.size(), digestAlgorithm, saltLength, signature.data(), signature.size());
if (!status)
return true;
return false;
}
ExceptionOr<Vector<uint8_t>> CryptoAlgorithmRSA_PSS::platformSign(const CryptoAlgorithmRsaPssParams& parameters, const CryptoKeyRSA& key, const Vector<uint8_t>& data)
{
return signRSA_PSS(key.hashAlgorithmIdentifier(), key.platformKey(), key.keySizeInBits(), data, parameters.saltLength);
}
ExceptionOr<bool> CryptoAlgorithmRSA_PSS::platformVerify(const CryptoAlgorithmRsaPssParams& parameters, const CryptoKeyRSA& key, const Vector<uint8_t>& signature, const Vector<uint8_t>& data)
{
return verifyRSA_PSS(key.hashAlgorithmIdentifier(), key.platformKey(), signature, data, parameters.saltLength);
}
}
#endif // ENABLE(SUBTLE_CRYPTO) && HAVE(RSA_PSS)