Identity-based Deniable Authenticated Encryption for E-voting Systems

• Chunhua Jin,
• Guanhua Chen,
• Jianyang Zhao,
• Shangbing Gao,
• Changhui Yu,

Vol. 13, No. 6, June 29, 2019
10.3837/tiis.2019.06.029, Download Paper (Free):

• DAE
• identity-based cryptography
• random oracle model

Abstract

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.

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