Universal Designated Verifier Signature Without Delegatability

2006 ◽  
pp. 479-498 ◽  
Author(s):  
Xinyi Huang ◽  
Willy Susilo ◽  
Yi Mu ◽  
Wei Wu
Keyword(s):  
Designated Verifier ◽  
Designated Verifier Signature ◽  
Universal Designated Verifier Signature

scholarly journals On the Security of a Novel Probabilistic Signature Based on Bilinear Square Diffie-Hellman Problem and Its Extension

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Zhenguo Zhao ◽  
Wenbo Shi
Keyword(s):  
Electronic Commerce ◽  
Security Analysis ◽  
Signature Scheme ◽  
Practical Applications ◽  
Diffie Hellman ◽  
Designated Verifier ◽  
Designated Verifier Signature ◽  
Universal Designated Verifier Signature

Probabilistic signature scheme has been widely used in modern electronic commerce since it could provide integrity, authenticity, and nonrepudiation. Recently, Wu and Lin proposed a novel probabilistic signature (PS) scheme using the bilinear square Diffie-Hellman (BSDH) problem. They also extended it to a universal designated verifier signature (UDVS) scheme. In this paper, we analyze the security of Wu et al.’s PS scheme and UDVS scheme. Through concrete attacks, we demonstrate both of their schemes are not unforgeable. The security analysis shows that their schemes are not suitable for practical applications.

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