Raiden

Raiden: An alternative to TEA Block Cipher Raiden is an extremely lightweight and fast block cipher, developed using genetic programming. Its aims are to be simple enough to be remembered by heart and to be compact, highly portable, and light enough to be implemented in resource constrained environments. It was developed with the intention of being an alternative to TEA, with the same speed and without any of its known weaknesses. (Source: http://freecode.com/)