Title: Security Analysis of Two Group Signature Schemes
Abstract: Group signature schemes have many applications,such as electronic cash and electronic vote.Thus,it is significant to devise efficient and secure group signature schemes based on all kinds of mathematic problems.In this paper,a group signature scheme based on Chinese remainder theorem and a group signature scheme based on RSA signature scheme are studied.Two security flaws in these schemes are found:in the former,the modulus of the system can be decomposed by every member of the group,so the private keys of everyone in the group can be computed;in the latter,the opening algorithm of the group signature scheme is incorrect,so the signer of the group signature can not be traced correctly.The analysis shows that the two schemes are not secure and need to be implemented.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot