Non-interactive identity based deniable authentication scheme

Identity-based deniable authentication protocol is a new kind of cryptographic authentication protocol, by which means that the authentication has no need for certificates and a specified receiver can identify the source of a given message, but not prove the identity of the sender to a third party. In recent years, many identity-based deniable authentication protocols have been proposed. However, most of these proposed schemes are interactive and less efficient. Therefore, in this paper, we would like to propose a new non-interactive identity-based deniable authentication protocol. Then, we proposed some lemmas to prove that their scheme can not only attain the desired deniable property but also prevent impersonate attacks.