"Discrete Logarithm based 't, n' Threshold Group Signature Scheme"
Ganesh Mante, Snehil Joshi · International Journal of Computer Applications · 2011
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.