Abstract. The secret key of a forward-secure signature scheme evolves at regular intervals, but the public key is fixed during the lifetime of the system. This paper enhances the security of Abdalla and Reyzin's forward-secure signature scheme via threshold and proactive mechanisms. In our threshold forward-secure signature scheme, we combine multiplicative and polynomial secret sharing schemes to form a threshold forward-secure signature scheme. We develop a special proof system to prove robustness of our scheme.
Tzeng and Tzeng REF proposed a robust forward-secure signature scheme which enhanced the security of Abdalla and Reyzin's forward-secure signature scheme by using threshold 2 J. Li et al. and proactive mechanisms.
Robust Forward-Secure Signature Schemes with Proactive Security
Public Key Cryptography
Computer Science