Provably Secure Proxy Multi-Signature Scheme Without Random Oracles

2012 ◽  
Vol 7 (1) ◽  
pp. 708-713
Author(s):  
Haiwei Fan ◽  
Xiangmo Zhao ◽  
Yang Ming
Keyword(s):  
Signature Scheme ◽  
Random Oracles ◽  
Provably Secure

Certificateless Short Signature Scheme from Bilinear Pairings

2013 ◽  
Vol 380-384 ◽  
pp. 2435-2438 ◽  
Author(s):  
Shu Rong Feng ◽  
Jiao Mo ◽  
Hua Zhang ◽  
Zheng Ping Jin
Keyword(s):  
Bilinear Pairings ◽  
Public Key ◽  
Security Level ◽  
Signature Scheme ◽  
Signature Schemes ◽  
Short Signature ◽  
Certificateless Signature ◽  
Provably Secure

Certificateless short signature schemes can not only have the advantage of certificateless signature, but also provide a short signature size in communication. However, all existing certificateless short signature schemes only proven secure against a normal adversary which can only obtain the valid signature for the original public key rather than a super adversary which can obtain the valid signature for the replaced public key. Recently, Fan et al. proposed a certificateless short signature scheme which is very efficient, but we found it is still cannot against super adversary. In this paper, we first analysis their scheme, and then present an improved scheme which can against super adversaries. Furthermore, our scheme can provide both the strongest security level and the shortest signature size compared the existed provably secure certificateless short signature scheme.

An Efficient and Provably Secure Proxy Signature Scheme

2011 ◽  
Vol 6 (7) ◽  
pp. 294-302
Author(s):  
Jianhong Zhang ◽  
Yuanbo Cui ◽  
Min Xu ◽  
Jiancheng Zou
Keyword(s):  
Proxy Signature ◽  
Signature Scheme ◽  
Provably Secure
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