密码学牛人Ron Rivest在 AES conference上的讲稿，全面讲解了rc6算法的原理，与rc5和aes的比较，rc6本身的效能分析。-Cryptography cattle were Ron Rivest in the AES conference on the scr ipt, full on the principle of the RC6 algorithm, and RC5 and aes comparison, rc6 own effectiveness analysis