public byte[] ComputeHash(byte[] buffer)
{
var crypt = MacAlgorithmProvider.OpenAlgorithm("HMAC_SHA1");
var sigBuffer = CryptographicEngine.Sign(crypt.CreateKey(CryptographicBuffer.CreateFromByteArray(hmackey)), CryptographicBuffer.CreateFromByteArray(buffer));
return sigBuffer.ToArray();
}
}