An efficient forward-secure proxy-protected signature scheme based on the strong RSA assumption

Akram A. M. Naji, Yahya Abu Hasan
2010 2010 3rd International Conference on Computer Science and Information Technology  
A proxy signature scheme is an important extension of the digital signature scheme, nowadays, is an active research topic, which attracts more researchers' attentions. As an ordinary digital signature scheme, a proxy signature is a vulnerable to the key exposure problem. In case, the secret signing key of the authorized user is be revealed or stolen. The aim of this paper is to put forth a proxy signature scheme, which has forward secrecy technique to mitigate the damage caused by the key
more » ... re problem, which is proved secure. In this paper, the definition and security model of a forwardsecure proxy signature scheme is formalized. Then, a generic forward-secure proxy-protected signature scheme is proposed based on the strong RSA assumption. By the reduction proof technique, the proposed scheme is proved secure against existential forgery adaptive chosen message attacks.
doi:10.1109/iccsit.2010.5564931 fatcat:kfvqhb4zyrbl7eumxrulllmcjm