Title	A Cryptosystem Based on the Symmetric Group Sn
Author	Javad N. Doliskani, Ehsan Malekian, Ali Zakerolhosseini
Citation	Vol. 8  No. 1  pp. 266-274
Keywords	Cryptosystem, Public Key, Discrete Logarithm Problem

Title	Comments on Wei’s Digital Signature Scheme Based on Two Hard Problems
Author	H. F. Lin, C. Y. Gun, C. Y. Chen
Citation	Vol. 9  No. 2  pp. 1-3
Keywords	digital signature, factorization problem, discrete logarithm problem, two hard problems

Title	An ID-Based Public key Cryptosystem based on the Double Discrete Logarithm Problem
Author	Chandrashekhar Meshram, Shyam Sundar Agrawal
Citation	Vol. 10  No. 7  pp. 8-13
Keywords	Public key Cryptosystem, Identity based Cryptosystem, Discrete Logarithm Problem, Double Discrete Logarithm Problem and Hash function

Title	A New Construction Method of Digital Signature Algorithms
Author	Thuy Nguyen Duc, Dung Luu Hong
Citation	Vol. 16  No. 12  pp. 53-57
Keywords	Digital signature Digital signature algorithm Discrete logarithm problem.