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Mathematical Problems in Engineering
Volume 2014, Article ID 630421, 11 pages
http://dx.doi.org/10.1155/2014/630421
Research Article

A Digital Signature Scheme Based on MST3 Cryptosystems

Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received 5 December 2013; Revised 13 March 2014; Accepted 14 March 2014; Published 20 May 2014

Academic Editor: Wang Xing-yuan

Copyright © 2014 Haibo Hong et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

As special types of factorization of finite groups, logarithmic signature and cover have been used as the main components of cryptographic keys for secret key cryptosystems such as PGM and public key cryptosystems like , , and . Recently, Svaba et. al proposed a revised encryption scheme with greater security. Meanwhile, they put forward an idea of constructing signature schemes on the basis of logarithmic signatures and random covers. In this paper, we firstly design a secure digital signature scheme based on logarithmic signatures and random covers. In order to complete the task, we devise a new encryption scheme based on cryptosystems.