AES:Advanced Encryption Standard new (Nov.2001)symmetric-key NIST standard,replacing DES processes data in 128 bit blocks 128,192,or 256 bit keys brute force decryption (try each key) taking 1 sec on DES,takes 149 trillion years for AES 8:Network Security 8-148: Network Security 8-14 AES: Advanced Encryption Standard  new (Nov. 2001) symmetric-key NIST standard, replacing DES  processes data in 128 bit blocks  128, 192, or 256 bit keys  brute force decryption (try each key) taking 1 sec on DES, takes 149 trillion years for AES