Enhanced Blowfish Algorithm using Bitmap Image Pixel Plotting for Security Improvisation
An enhanced Blowfish algorithm, a new secret-key block cipher is proposed in this work. It is a Feistel network, iterating a simple encryption function 16 times. The block size is 64 bits, and the key can be any length up to 448 bits. Although there is a complex initialization phase required before the encryption can take place, the actual encryption of data is very efficient on large microprocessors. DES, the workhorse encryption algorithm for the past fifteen years, is nearing the end of its useful life. Its 56-bit key size is vulnerable to a brute-force attack |2|, and recent advances in differential cryptanalysis |l| and linear cryptanalysis |8| indicate that DES is vulnerable to other attacks as well. GOST |6|, a Soviet government algorithm, is specified without the S-boxes. The cryptographic community needs to provide the world with a new encryption standard. The U.S. government is moving towards secret algorithms, such as the Skipjack algorithm in the Clipper and Capstone chips |5|. If the world is to have a secure, unpatented, and freely-available encryption algorithm by the turn of the century, we need to develop several candidate encryption algorithms now. By using this algorithm, 64 bit data can be encrypted into RGB values and plotted as a pixel in a bitmap image. Thus the security of blowfish algorithm is enhanced by using water marking technology.
Blowfish Cryptography DES Feistel Network water marking
Nirmala Palaniswamy Dipesh Dugar M Dinesh Kumar Jain N Raaja Sarabhoje G
Department of Information Technology ,Sriram Engineering College Department of Computer Science and Engineering,M.N.M.Jain Engineering College, Anna University, Chen
国际会议
上海
英文
533-538
2010-06-22（万方平台首次上网日期，不代表论文的发表时间）