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首页> 外文期刊>The Journal of Systems and Software >A communication-efficient and fault-tolerant conference-key agreement protocol with forward secrecy
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A communication-efficient and fault-tolerant conference-key agreement protocol with forward secrecy

机译：具有前向保密性的通信高效且容错的会议密钥协议协议

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摘要

A conference-key establishment protocol allows participants to construct a common session key that is used to encrypt/decrypt transmitted messages among the participants over an open channel. There are two kinds of conference-key establishment protocols: conference-key distribution and conference-key agreement. In a conference-key distribution protocol, a trusted or elected entity is responsible for generating and distributing the conference key. A conference-key agreement protocol involves all participants cooperatively establishing a conference key. This article designs a secure conference-key agreement protocol with constant round number and message size. Under the decision Diffie-Hellman problem assumption, the resulting protocol is demonstrated to be secure against passive adversaries. Under the random oracle model, the proposed protocol is demonstrated to be provable secure against impersonator attacks and withstand known-key attacks. Compared to previously proposed protocols with round-efficiency, the proposed protocol requires a constant message size for each participant. Furthermore, the proposed protocol possesses both fault tolerance and forward secrecy, while previously proposed protocols with round-efficiency lack one or both properties.
机译：会议密钥建立协议允许参与者构建公共会话密钥，该会话密钥用于在开放信道上加密/解密参与者之间传输的消息。会议密钥建立协议有两种：会议密钥分发协议和会议密钥协议。在会议密钥分发协议中，受信任或当选实体负责生成和分发会议密钥。会议密钥协议协议涉及所有参与者合作建立会议密钥。本文设计了一个具有恒定轮数和消息大小的安全会议密钥协议协议。根据决策Diffie-Hellman问题假设，证明了所产生的协议对于被动对手是安全的。在随机预言机模型下，所提出的协议被证明可有效地抵抗冒名顶替者的攻击并能抵抗已知密钥攻击。与先前提出的具有舍入效率的协议相比，提出的协议要求每个参与者具有恒定的消息大小。此外，提出的协议具有容错能力和前向保密性，而先前提出的具有舍入效率的协议缺乏一个或两个属性。

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