protected override string ComputeSignatureCore(string key, string data)
{
Debug.Assert(!string.IsNullOrEmpty(data));
using (var algorithm = KeyedHash.Create(SignatureMethod.ToUpperInvariant()))
{
algorithm.Key = Encoding.GetBytes(key.ToCharArray());
return(Convert.ToBase64String(
algorithm.ComputeHash(Encoding.GetBytes(data.ToCharArray()))));
}
}
