文章基本信息

标题：A Novel Approach to Improve Avalanche Effect of AES Algorithm
本地全文：下载
作者：Chandra Prakash Dewangan ; Shashikant Agrawal
期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2012
卷号：1
期号：8
页码：248-252
出版社：Shri Pannalal Research Institute of Technolgy
摘要：With the rapid progression of digital data exchange in electronic way, security of information is becoming more important in data storage and transmission. Therefore numerous ways of protecting information are being utilized by individuals, businesses, and governments. Cryptography has come up as a solution which plays a vital role in information security system against malicious attacks. This security system uses some algorithms to scramble data into scribbled text which can be only being decoded or decrypted by party those possesses the associated key. In this paper a most widely used symmetric encryption techniques i.e. advanced encryption standard (AES) have been implemented using MATLAB software. The primary goal of this paper is to improve level of security. The implemented encryption technique is analyzed by using a parameter called Avalanche effect. Plaintext and encryption key are mapped in binary code before encryption process. Avalanche Effect is calculated by changing one bit in plaintext keeping the key constant and by changing one bit in encryption key keeping the key constant, Experimental results shows that the proposed algorithm exhibit significant high Avalanche Effect which improves the level of the security.
关键词：Advanced Encryption Standard (AES); Avalanche ; Effect; Ciphertext; Secret key.