Modified Advanced Encryption Standard for Image Encryption and Decryption

Abstract

In todays world most of the communication is completed using electronic media. Cryptography is widely used to ensure security in communication, data storage and transmission. The protection of this multimedia message can be done by encryption techniques. For encryption many different techniques are used to protect confidential image data from unauthorized access. The cryptography concept is used in many applications like password, visa card number, military communications, banks, satellite channels and some other communication system. Advanced Encryption Standard (AES) has many advantages over data encryption Standard. If symmetric key encryption algorithm is used for complex multimedia data (mostly images) so it is not suitable for real time application. We proposed a modified advanced encryption standard (MAES) to reflect a high level security and better image encryption. In this proposed project modification is done by adjusting the Shift Row step in advanced encryption standard algorithm. The shift row phase of modified advanced encryption standard (MAES) is different from advanced encryption standard (AES) shift row phase. The experimental results of this work gives better performance than AES algorithm.

Keywords: Encryption, Decryption, Data Encryption Standard (DES), Advanced Encryption Standard (AES), Blowfish, Modified Advanced Encryption Standard (MAES)

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