一种Rijndael算法的改进

随着计算机技术的飞速发展，传统的数据加密标准DES算法渐被新的高级加密标准AES——RAjndael算法所替代。根据Rijndael算法中大量矩阵运算的特点，对加密和解密的轮变换进行了研究，给出了其优化实现，提高了AES算法的加解密速度；实践证明，该应用方法是有效的。

An Ameliorated Method Based on Rijndael Algorithm

With the rapid development of computer technology, the data encryption standard DES was replaced by the AES-Rijndael algorithmof the advanced encryption standard,This Paper studies its round transformation equation,and gives a better implementation of AES based on table-looking-up method,proposes its optimized algorithm,which can greatly increase the enerypting/decrypting speed. And practical application proves thatthis method is effective.