A Directed Signature Scheme Based on Discrete Logarithm Problem

This paper presents a new directed signature scheme based on discrete logarithm problem, a scheme that permits only an intended verifier to verify a resulting signature. In addition, the scheme is able to prove to any third party the validity of the signature. Essentially, we illustrate that the scheme achieves the same level of security but is very efficient compared to Lim–Lee’s scheme. Two immediate applications are also presented: flexible shared verification and signing contracts procedure extended from the new directed signature scheme