Improvement on Lin et al's Strong Designated Verifier Proxy Signature Scheme for Electronic Commerce

2014 ◽  
Vol 8 (5) ◽  
pp. 333-348
Author(s):  
Caixue Zhou
Keyword(s):  
Electronic Commerce ◽  
Proxy Signature ◽  
Signature Scheme ◽  
Designated Verifier

Group–Proxy Signature Scheme: A Novel Solution to Electronic Cash

2013 ◽  
Vol 22 (2) ◽  
pp. 95-110 ◽  
Author(s):  
Haiyong Bao ◽  
Zhenfu Cao
Keyword(s):  
Electronic Commerce ◽  
Group Size ◽  
Proxy Signature ◽  
Space Time ◽  
Group Signature ◽  
Signature Scheme ◽  
Electronic Cash ◽  
Cryptographic Primitives ◽  
The Future ◽  
First Time

AbstractProxy signature and group signature are two basic cryptographic primitives. Due to their valuable characteristics, many schemes have been put forward independently and they have been applied in many practical scenarios up to the present. However, with the development of electronic commerce, many special requirements come into being. In this article, we put forward the concept of group–proxy signature, which integrates the merits of proxy signature and group signature for the first time. We also demonstrate how to apply our scheme to construct an electronic cash system. The space, time, and communication complexities of the relevant parameters and processing procedures are independent of group size. Our demonstration of the concrete group–proxy signature scheme shows that the concepts brought forward by us are sure to elicit much consideration in the future.

Short and provably secure designated verifier proxy signature scheme

2016 ◽  
Vol 10 (2) ◽  
pp. 69-79 ◽  
Author(s):  
Xiaoming Hu ◽  
Huajie Xu ◽  
Jian Wang ◽  
Wenan Tan
Keyword(s):  
Proxy Signature ◽  
Signature Scheme ◽  
Designated Verifier ◽  
Provably Secure

Cryptanalysis and Improvement of a Strong Designated-Verifier Proxy Signature Scheme

2013 ◽  
Vol 397-400 ◽  
pp. 1999-2003
Author(s):  
Li Guo Yang ◽  
Fu Na Ou ◽  
Jing Zhao
Keyword(s):  
Security Analysis ◽  
Proxy Signature ◽  
Signature Scheme ◽  
Designated Verifier

By cryptanalysis of a strong designated-verifier proxy signature scheme, it is found that this scheme has security leaks: original signer can forge the proxy signers valid proxy signature for any message; not only the designated-verifier but also proxy signer can verify the signature and proxy signer can misuse it. An improvement is given, and the security analysis shows that it can resist the spiteful forgery attacks by original signer and prevent the misuse of proxy signature by proxy signer.

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