基于身份认证密钥协商的分析与改进
DOI: 10.3969/j.issn.1006-7043.2009.10.021
Keywords: 公钥密码 基于身份的认证密钥协商 双线性对 标准模型 public key cryptography identity-based authenticated key agreement bilinear maps standard model
Abstract:
针对标准模型下可证明安全的基于身份认证密钥协商协议给出了一种有效攻击,指出其无会话密钥托管的协议存在安全缺陷.当密钥生成器(PKG)被恶意控制时,协商的会话密钥仍能被计算出来.为了抵抗这种攻击,给出了一种改进的基于身份认证密钥协商协议. 改进的协议在标准模型下是可证明安全的,具有无会话密钥托管的属性.
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