On the Minimal Assumptions of Group Signature Schemes.

Michel Abdalla Bogdan Warinschi On the Minimal Assumptions of Group Signature Schemes. 1-13 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3269&spage=1 2004 conf/icics/2004 ICICS db/conf/icics/icics2004.html#AbdallaW04