public void TripleDesTest()
{
var buffer = _source.FromEncodingString(_encoding);
buffer = _symmetric.EncryptTripleDes(buffer);
buffer = _symmetric.DecryptTripleDes(buffer);
Assert.Equal(_source, buffer.AsEncodingString(_encoding));
var encrypt = _symmetric.EncryptTripleDes(buffer, _token).AsBase64String();
Assert.NotEmpty(encrypt);
var decrypt = _symmetric.DecryptTripleDes(encrypt.FromBase64String(), _token)
.AsEncodingString(_encoding);
Assert.Equal(_source, decrypt);
}