International Journal Of Engineering And Computer Science
AES is a symmetric key cryptography. It contains no of rounds, which are fixed. It is a block cipher technique in which each cipher has variable block length and key length. In today's world most of the communication is done electronic media. Data security plays vital role in such communication. Hence there is need to protect data from malicious attack. This can be achieved by cryptography. The earlier encryption algorithm was DES which has several loopholes such as small key size, sensible to brute force attack etc. These loopholes were overcome by AES algorithm.