A Novel Multiple Key Block Ciphering Mechanism with Reduced Computational Overhead
V. S. Shankar Sriram, Abhishek Kumar Maurya, G. Sahoo · International Journal of Computer Applications · 2010
Cryptanalysis of symmetric key cryptography encourages large key size and complex operations to achieve message confidentiality.All these techniques pose computational overhead at both the sender & receiver ends.In this paper, we propose a simple yet powerful Block Cipher Multiple Key Symmetric Encryption (BCMKSE) algorithm for achieving both confidentiality & integrity with reduced computational and message overheads.Our algorithm changes the key after encrypting/decrypting a piece of the whole message.While the key changes during the whole message encryption/decryption process without increasing network traffic or message overhead.This methodology becomes faster as it uses the simplest operations like shift, XOR, addition and comparison operations.