ISSN : 2319-7323

INTERNATIONAL JOURNAL OF COMPUTER SCIENCE ENGINEERING

ABSTRACT

Title	:	A Novel Data Encryption Standard (DES) by using Pseudo Random Binary Sequence Key in Matlab
Authors	:	Som Banerjee, Chandrama Dey
Keywords	:	Cryptography, Data Encryption Standard, Decryption, Encryption, NIST, P-value, Pseudo Random Binary Sequence, Random Number, Symmetric Key Cryptography.
Issue Date	:	Jan-Feb 2020
Abstract	:	Data Encryption Standard (DES) is one of the most important symmetric key cryptographic algorithm that have gained importance globally because of its use in different areas of cryptography. DES consists of initial permutation, 16 round (key generation, s-box and p-box), final permutation. Generating a highly random key is a very difficult task which actually determines the quality of security offered by the cipher text generated by the algorithm. Pseudo random binary sequence can be an alternative way to solve this problem. Pseudo random binary sequences create random bit generation, which helps in increasing the security of the key generated. In this manuscript, a 64 bit pseudo random key generated by using a pseudo random binary sequence generator is applied over a DES for performing encryption and decryption. The key generated by pseudo random binary sequence has proved much higher level of security (randomness p-value of 0.607 tested by NIST frequency mono bit test) and time complexity (of 0.054) than the existing key.
Page(s)	:	99-106
ISSN	:	2319-7323
Source	:	Vol. 9, No. 1