IMAGE ENCRYPTION AND DECRYPTION USING AES ALGORITHM

Data Security is primary concern for every communication system. The relentless growth of Internet and communication technologies has made th e extensive use of images unavoidable. There are many ways to provide security to data that is being communicated. This Paper describes a design of effective security for communication by AES algorithm for encryption and decryption. It is based on AES Key Expansion in which the encryption process is a bit wise exclusive or operation of a set of image pixels along with the a 128 bit key which changes for every set of pixels. The National Institute of Standards and Technology (NIST) has initiated a process to develop a Federal information Processing Standard (FIPS) for the Advanced Encryption Standard (AES), specifying an Advanced Encryption Algorithm to replace the Data Encryption standard (DES) the Expired in 1998. The Advanced Encryption Standard can be programmed in software or built with pure hardware.