Rijndael (pronounced Reindaal) AES算法，由Joan Daemen and Vincent Rijmen设计。-//Rijndael (pronounced Reindaal) is a block cipher, designed by Joan Daemen and Vincent Rijmen as a candidate algorithm for the AES.

//The cipher has a variable block length and key length. The authors currently specify how to use keys with a length

//of 128, 192, or 256 bits to encrypt blocks with al length of 128, 192 or 256 bits (all nine combinations of

//key length and block length are possible). Both block length and key length can be extended very easily to

// multiples of 32 bits.

//Rijndael can be implemented very efficiently on a wide range of processors and in hardware.

//This implementation is based on the Java Implementation used with the Cryptix toolkit found at:

//http://www.esat.kuleuven.ac.be/~rijmen/rijndael/rijndael.zip

//Java code authors: Raif S. Naffah, Paulo S. L. M. Barreto

//This Implementation was tested against KAT test published by the authors of the method and the

//results were identical.