private static bool TryExecuteTransform(
ReadOnlySpan <byte> source,
Span <byte> destination,
out int bytesWritten,
SecKeyTransform transform)
{
SafeCFDataHandle outputHandle;
SafeCFErrorHandle errorHandle;
int ret = transform(source, out outputHandle, out errorHandle);
using (errorHandle)
using (outputHandle)
{
switch (ret)
{
case kSuccess:
return(CoreFoundation.TryCFWriteData(outputHandle, destination, out bytesWritten));
case kErrorSeeError:
throw CreateExceptionForCFError(errorHandle);
default:
Debug.Fail($"transform returned {ret}");
throw new CryptographicException();
}
}
}
private static byte[] ExecuteTransform(ReadOnlySpan <byte> source, SecKeyTransform transform)
{
const int Success = 1;
const int kErrorSeeError = -2;
SafeCFDataHandle data;
SafeCFErrorHandle error;
int ret = transform(source, out data, out error);
using (error)
using (data)
{
if (ret == Success)
{
return(CoreFoundation.CFGetData(data));
}
if (ret == kErrorSeeError)
{
throw CreateExceptionForCFError(error);
}
Debug.Fail($"transform returned {ret}");
throw new CryptographicException();
}
}
