期刊名称：International Journal of Security and Its Applications
印刷版ISSN：1738-9976
出版年度：2016
卷号：10
期号：5
页码：327-336
DOI：10.14257/ijsia.2016.10.5.29
出版社：SERSC
摘要：Today, cryptography is a cornerstone in the resource constrained networks and devices. Many modern cryptosystems make it very difficult but not impossible for an attacker to determine the decoding key. Even though the key might be eventually determined by a skilled decoder, given enough time and effort, cryptosystems can still provides ample security to protect valuable information. Among various encryption techniques, Caesar cipher is one of the oldest technique to encrypt the valuable information. But it gets easily cracked due to its simplicity of operation. In this paper, a new algorithm is proposed i.e. Coherent Caesar Cipher (CCC), which is found to be more consistent and reliable as compared to other existing caesar cipher algorithms. Performance of CCC and conventional techniques are tested using various NIST suggested randomness evaluation tests along with brute force attack analysis. The results were promising as the proposed technique produced more random results for various inputs and has the capability to withstand brute force attack for a longer duration.
关键词：Cryptography; Caesar cipher; Encryption; Security; Brute force attack.
