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基于扩展混沌映射的认证密钥协商协议
An authenticated key agreement proto col based on extended chaotic maps
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摘要: 近年来，基于混沌映射和智能卡的认证密钥协商协议被相继提出。然而，防篡改读卡器使得这类协议的实现成本较高并且很难在实际中广泛应用。另外，基于混沌映射的数字签名方案需要很高的计算资源，这使得依赖签名方案的公钥发布存在安全问题。据此，本文基于扩展混沌映射提出一种新的无智能卡的认证密钥协商协议。新协议消除了公钥发布过程。安全和性能分析表明，新协议能抵抗各类攻击并且计算复杂度较低。因此，新协议更适合在实际环境中应用。Abstract: Recently, many chaotic maps-based authenticated key agreement protocols using smart cards have been proposed. Unfortunately, tamper-resistant card readers make these protocols costly and unpractical. In addition, the digital signa-ture scheme based on chaotic maps requires high computational resources. There exists security problem in publishing public keys which depend on signature schemes. In this paper, we will present a novel authenticated key protocol with-out smart cards while using extended Chebyshev maps. The proposed protocol eliminates the process of publishing the public key. Security and performance analysis show that our protocol can resist various attacks and yet is reasonably efficient. Therefore, our protocol is more suitable for practical applications.
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