/// <summary>
/// Takes a string and creates a signed hash of it
/// </summary>
/// <param name="Input">Input string</param>
/// <param name="Key">Key to encrypt/sign with</param>
/// <param name="Hash">This will be filled with the unsigned hash</param>
/// <param name="EncodingUsing">Encoding that the input is using (defaults to UTF8)</param>
/// <returns>A signed hash of the input (64bit string)</returns>
public string SignHash(string Input, string Key, out string Hash, Encoding EncodingUsing = null)
{
Contract.Requires <NullReferenceException>(AsymmetricAlgorithms != null, "AsymmetricAlgorithms");
IAsymmetric Found = AsymmetricAlgorithms.FirstOrDefault();
if (Found == null)
{
throw new ArgumentException("No asymmetric encryption algorithm found");
}
return(Found.SignHash(Input, Key, out Hash, EncodingUsing));
}
