Identity-based Deniable Authenticated Encryption for E-voting Systems

Deniable authentication (DA) is a protocol in which a receiver can generate an authenticator that is probabilistically indistinguishable from a sender.DA can be applied in many scenarios that require user privacy protection.To enhance the security of DA, in this paper, we construct a new deniable authenticated encryption (DAE) scheme that realizes deniable authentication and confidentiality in a logical single step.Compared with existing approaches, our approach provides proof of security and is efficient in terms of performance analysis.Our scheme is in an identity-based environment; thus, it avoids the public key certificate-based public key infrastructure (PKI).Moreover, we provide an example that shows that our protocol is applicable for e-voting systems.