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Nonce-Based Key Agreement Protocol Against Bad Randomness

    https://doi.org/10.1142/S0129054119400161Cited by:2 (Source: Crossref)
    This article is part of the issue:

    Most of the existing cryptographic schemes, e.g., key agreement protocol, call for good randomness. Otherwise, the security of these cryptographic schemes cannot be fully guaranteed. Nonce-based cryptosystem is recently introduced to improve the security of public key encryption and digital signature schemes by ensuring security when randomness fails. In this paper, we first investigate the security of key agreement protocols when randomness fails. Then we define the security model for nonce-based key agreement protocols and propose a nonce-based key agreement protocol that protects against bad randomness. The new protocol is proven to be secure in our proposed security model.

    Communicated by Yong Yu, Guomin Yang and Huaxiong Wang