The Rijndael algorithm was adapted as Advanced Encryption Standard (AES) algorithm, to Data Encryption Algorithm (DES), which have been in the security standards since long time. The comparative analysis is implemented in IEEE 802.11i wireless platform. Compared to DES, AES contains CCMP which is a security standard that provides the highest level of security to encrypt and authenticate the data simultaneously. CCMP protocol is to provide robust security. The CCMP protocol is based on Advanced Encryption Standard (AES) encryption algorithm. It uses the counter mode with CBC-MAC (CCM) mode of operation.