public void CalculateKeyFromText(string a_text, string a_key)
{
if (HashFunction is ICrypto)
{
IHMAC hmac = HashFactory.HMAC.CreateHMAC(HashFunction);
hmac.Key = Converters.ConvertStringToBytes(a_key, Encoding.ASCII);
Hash = hmac.ComputeString(a_text, Encoding.ASCII).ToString();
}
else if (HashFunction is IWithKey)
{
IWithKey hash_with_key = HashFunction as IWithKey;
try
{
var key_bytes = Converters.ConvertStringToBytes(a_key, Encoding.ASCII);
if (key_bytes.Length == 0)
{
key_bytes = null;
}
hash_with_key.Key = key_bytes;
Hash = hash_with_key.ComputeString(a_text, Encoding.ASCII).ToString();
}
catch
{
Hash = "Error";
}
}
else
{
Debug.Assert(false);
}
}
