Identity-based deniable authentication for ad hoc networks

• DOI: 10.1007/s00607-013-0321-5
• Publication Date: 2013-04-02T04:32:17Z
• Authors: Fagen Li; Pan Xiong; Chunhua Jin
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

Deniable authentication is an important security requirement for ad hoc networks. However, all known identity-based deniable authentication (IBDA) protocols are lack of formal security proof which is very important for cryptographic protocol design. In this paper, we propose a non-interactive IBDA protocol using bilinear pairings. Our protocol admits formal security proof in the random oracle model under the bilinear Diffie-Hellman assumption. Our protocol is faster than all known IBDA protocols of its type. In addition, our protocol supports batch verification that can speed up the verification of authenticators. This characteristic makes our protocol useful in ad hoc networks.