Implicitly Authenticated Key Agreement Protocol Based on Password

Abstract

Abstract: Key agreement protocols used in group communication applications are studied. Firstly, the fixed base used in DH schemes is replaced with a changeable base, by which the two-party key agreement protocol PPK[5] is improved. Secondly, the two-party protocol is extended to a multi-party protocol. The security of the two protocols against passive attacks and active attacks is discussed. However, the multi-party protocol can not fight against collusive attacks.

摘要： 研究了群组通信中的密钥协商协议，首先用可变的底数来代替DH方案中的固定底数，改进了两方(Two-party)密钥协商协议PPK[5]，然后把两方协议扩展成多方（Multi-party）协议，并且分析了所提出的两个协议对被动攻击和主动攻击的抵抗能力，最后给出了前者在抵抗联合攻击方面的不足。

关键词: 口令, 隐含认证, 密钥协商协议, PFS

CLC Number:

TP309

WANG Yong，CAO Yuanda，LIN Guanluan. Implicitly Authenticated Key Agreement Protocol Based on Password[J]. , 2002, 28(11): 40-.

王勇,曹元大,林观銮. 基于口令的可隐含认证的密钥协商协议[J]. , 2002, 28(11): 40-.

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URL: https://www.ecice06.com/EN/Y2002/V28/I11/40

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