Balram Nitharwal

Work place: Dept. of Computer Science and Engineering, Central University of Rajasthan, INDIA



Research Interests: Information Security, Network Architecture, Network Security, Information Systems, Data Structures and Algorithms


Balram Nitharwal has received Bachelor of Technology in Computer Engineering from Engineering College Bikaner, Rajasthan affiliated to Rajasthan Technical University Kota in 2011 and Master of Technology in Computer Science and Engineering with specialization in information security from Central University of Rajasthan in 2013. His area of interest includes information security, cryptography, chaotic cryptography and network security.

Author Articles
Improving Security of the Baptista’s Cryptosystem Using Two-step Logistic Map

By Balram Nitharwal Mamta Rani Hukam Chand Saini

DOI:, Pub. Date: 8 Apr. 2015

Over last 3 decades, many cryptography algorithms based on chaos have been proposed that are very fast in computation. Chaos is used for secured communication in two ways as analog secured communication and digital chaotic ciphers. This paper is mainly focused at digital chaotic cryptosystem. In symmetric cryptosystems, same key is used for both encryption and decryption purpose. In 1998, Baptista gave the most used symmetric cryptosystem based on Ergodic property of logistic map. Later on, many refinements were done in Baptista’s algorithm. By going through later proposed refinements in this cryptosystem, some flaws are observed. Proposed scheme has a two-step logistic map that is a feedback mechanism using an extra variable to come over these flaws. At last, there is comparison between proposed scheme and other version of Baptista type cryptosystem, which shows that the proposed scheme is better than previous ones and it is resist against behavior analysis attack and partial key recovery attack.

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