Cryptanalysis and improvement of a new certificateless signature scheme in the standard model

2021 ◽  
Vol 18 (1) ◽  
pp. 151-160
Author(s):  
Chenhuang Wu ◽  
Hui Huang ◽  
Kun Zhou ◽  
Chunxiang Xu
Keyword(s):  
Standard Model ◽  
Signature Scheme ◽  
The Standard Model ◽  
Certificateless Signature

Key Replacement Attack on Two Certificateless Signature Schemes without Random Oracles

2010 ◽  
Vol 439-440 ◽  
pp. 1606-1611 ◽  
Author(s):  
Qi Xia ◽  
Chun Xiang Xu ◽  
Yong Yu
Keyword(s):  
Standard Model ◽  
Public Key ◽  
Signature Scheme ◽  
Signature Schemes ◽  
The Public ◽  
Random Oracles ◽  
The Standard Model ◽  
Replacement Attack ◽  
Certificateless Signature

Liu et al. proposed the first certificateless signature scheme without random oracles in 2007. However, Xiong et al. showed that Liu et al.'s scheme is insecure against a malicious-but-passive KGC attack and proposed an improved scheme. In ISA 2009, Yuan et al. also proposed a new certificateless signature scheme without random oracles. Although they claimed that the two schemes are secure in the standard model, this paper shows that both Xiong et al.'s improved scheme and Yuan et al.'s new scheme are vulnerable to key replacement attack, where an adversary, obtaining a signature on a message and replacing the public key of a signer, can forge valid signatures on the same message under the replaced public key. We also give the corresponding modifications of the two schemes to resist key replacement attack.

Top-Level Secure Certificateless Signature Scheme in the Standard Model

2019 ◽  
Vol 13 (3) ◽  
pp. 2763-2774 ◽  
Author(s):  
Yi-Fan Tseng ◽  
Chun-I Fan ◽  
Ching-Wen Chen
Keyword(s):  
Standard Model ◽  
Signature Scheme ◽  
The Standard Model ◽  
Certificateless Signature

Efficient and secure certificateless signature scheme in the standard model

2015 ◽  
Vol 30 (5) ◽  
pp. e3041 ◽  
Author(s):  
Liaojun Pang ◽  
Yufei Hu ◽  
Yi Liu ◽  
Kedong Xu ◽  
Huixian Li
Keyword(s):  
Standard Model ◽  
Signature Scheme ◽  
The Standard Model ◽  
Certificateless Signature

Improved certificateless signature scheme provably secure in the standard model

2012 ◽  
Vol 6 (2) ◽  
pp. 102 ◽  
Author(s):  
Y. Yu ◽  
Y. Mu ◽  
G. Wang ◽  
Q. Xia ◽  
B. Yang
Keyword(s):  
Standard Model ◽  
Signature Scheme ◽  
The Standard Model ◽  
Certificateless Signature ◽  
Provably Secure

Unforgeability of an improved certificateless signature scheme in the standard model

2014 ◽  
Vol 8 (5) ◽  
pp. 273-276 ◽  
Author(s):  
Chaowen Guan ◽  
Jian Weng ◽  
Minrong Chen ◽  
Dehua Zhou ◽  
Robert H. Deng
Keyword(s):  
Standard Model ◽  
Signature Scheme ◽  
The Standard Model ◽  
Certificateless Signature
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