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针对已有SIP(session initiation protocol)服务支付方案的缺陷,提出了一种基于Hash链的SIP服务实时支付方案——SIPCoin。SIPCoin充分利用了Hash链高效、不可逆的良好特性,通过对SIP协议的简单扩展和一个根据标准设计的新的支付消息流程,将基于Hash链的微支付机制和SIP会话的建立、管理流程有机结合起来,可实现安全的SIP服务实时支付。分析表明,相比已有的SIP服务支付方案,SIPCoin不仅具有高效、实时和可扩展的良好性能,而且支持电子货币防伪等安全特性,可抵御SIP服务支付中常见的重放攻击和中间人攻击等。
Aiming at the shortcomings of SIP (session initiation protocol) service payment scheme, this paper proposes a SIP service real-time payment scheme based on Hash chain - SIPoin. SIPCoin takes full advantage of the high efficiency and irreversibility of Hash chain. Through the simple extension of SIP protocol and a new payment message flow based on standard design, SIPCoin combines Hash chain-based micro-payment mechanism with SIP session establishment and management process Get up and pay for secure SIP services in real time. Analysis shows that compared with the existing SIP service payment solution, SIPCoin not only has high efficiency, real-time and scalability, but also supports security features such as electronic money counterfeit protection against common replay attacks and man-in-the-middle attacks in SIP service payment .