CryptoAlgorithmAES_KWMac.cpp [plain text]
#include "config.h"
#include "CryptoAlgorithmAES_KW.h"
#if ENABLE(SUBTLE_CRYPTO)
#include "CryptoKeyAES.h"
#include "ExceptionCode.h"
#include <CommonCrypto/CommonCrypto.h>
namespace WebCore {
static ExceptionOr<Vector<uint8_t>> wrapKeyAES_KW(const Vector<uint8_t>& key, const uint8_t* data, size_t dataLength)
{
Vector<uint8_t> result(CCSymmetricWrappedSize(kCCWRAPAES, dataLength));
size_t resultSize = result.size();
if (CCSymmetricKeyWrap(kCCWRAPAES, CCrfc3394_iv, CCrfc3394_ivLen, key.data(), key.size(), data, dataLength, result.data(), &resultSize))
return Exception { OperationError };
result.shrink(resultSize);
return WTFMove(result);
}
static ExceptionOr<Vector<uint8_t>> unwrapKeyAES_KW(const Vector<uint8_t>& key, const uint8_t* data, size_t dataLength)
{
Vector<uint8_t> result(CCSymmetricUnwrappedSize(kCCWRAPAES, dataLength));
size_t resultSize = result.size();
if (resultSize % 8)
return Exception { OperationError };
if (CCSymmetricKeyUnwrap(kCCWRAPAES, CCrfc3394_iv, CCrfc3394_ivLen, key.data(), key.size(), data, dataLength, result.data(), &resultSize))
return Exception { OperationError };
result.shrink(resultSize);
return WTFMove(result);
}
void CryptoAlgorithmAES_KW::platformWrapKey(Ref<CryptoKey>&& key, Vector<uint8_t>&& data, VectorCallback&& callback, ExceptionCallback&& exceptionCallback)
{
auto& aesKey = downcast<CryptoKeyAES>(key.get());
auto result = wrapKeyAES_KW(aesKey.key(), data.data(), data.size());
if (result.hasException()) {
exceptionCallback(result.releaseException().code());
return;
}
callback(result.releaseReturnValue());
}
void CryptoAlgorithmAES_KW::platformUnwrapKey(Ref<CryptoKey>&& key, Vector<uint8_t>&& data, VectorCallback&& callback, ExceptionCallback&& exceptionCallback)
{
auto& aesKey = downcast<CryptoKeyAES>(key.get());
auto result = unwrapKeyAES_KW(aesKey.key(), data.data(), data.size());
if (result.hasException()) {
exceptionCallback(result.releaseException().code());
return;
}
callback(result.releaseReturnValue());
}
ExceptionOr<void> CryptoAlgorithmAES_KW::platformEncrypt(const CryptoKeyAES& key, const CryptoOperationData& data, VectorCallback&& callback, VoidCallback&& failureCallback)
{
if (data.second % 8) {
failureCallback();
return { };
}
auto result = wrapKeyAES_KW(key.key(), data.first, data.second);
if (result.hasException()) {
failureCallback();
return { };
}
callback(result.releaseReturnValue());
return { };
}
ExceptionOr<void> CryptoAlgorithmAES_KW::platformDecrypt(const CryptoKeyAES& key, const CryptoOperationData& data, VectorCallback&& callback, VoidCallback&& failureCallback)
{
auto result = unwrapKeyAES_KW(key.key(), data.first, data.second);
if (result.hasException()) {
failureCallback();
return { };
}
callback(result.releaseReturnValue());
return { };}
}
#endif // ENABLE(SUBTLE_CRYPTO)