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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 7    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 7, July 2011 Edition
A Modified (t, n) Threshold Group Signature Generation and (k, m) Threshold Group Signature Verification Scheme
Full Text(PDF, 3000)  PP.  
Author(s)
Ganesh Mante,Prof.Dr.S.D.Joshi
KEYWORDS
Discrete logarithm, Group Signature, Galois Field, Polynomial, Signers, Threshold, Verifiers
ABSTRACT
Globalization of the Internet has boosted electronic information exchange on both the personal and business levels. There is a need of the authentication of messages sent by a group of individuals to another group. A (t, n) threshold group signature scheme is a method for allowing a member of a group to anonymously sign a message on behalf of the group. The idea of threshold cryptography is to protect information by distributing it among a cooperating member. Following some ideas of the classical threshold signature scheme, a (t, n) threshold group signature scheme and (k, m) threshold group signature verification scheme based on discrete logarithm problem is proposed. The group signature is generated by at least t group members and is verified by at least k members in the group. Only one group public key is required. Each group member separately signs the message. The scheme is highly secure and resists the conspiracy attack.
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