CAMRF: Cross-Blockchain Authenticating Mechanism Based on Random Ferrying
Yihuan MAO, Wei FU, Zhimin YUAN, Zhihong SUN
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2024-10-22
2026-02-24
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2026-07-23
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摘要
为了解决不同管理域实体之间身份互认困难的问题,提出一种基于随机摆渡的跨链身份信息互认机制(Cross-blockchain Authenticating Mechanism based on Random Ferrying, CAMRF)。该机制首先通过改进的PageRank算法从普通节点中筛选高信誉候选摆渡节点;然后基于可验证随机函数(VRF)生成共识随机数,动态选举摆渡节点组作为公证人组;最后,由该组节点转发、签名和认证跨域消息,并采用BLS(Boneh-Lynn-Shacham)轻量级聚合签名技术验证消息的真实性与有效性,克服了传统机制存在的中心化依赖强、安全性低的问题。理论分析和实验表明,CAMRF机制具有高互操作性,能有效提高跨域身份认证的安全性和可靠性,具有一定的理论意义和较高的实用价值。
Abstract
To address the challenge of identity authentication between entities across different administrative domains, a cross-blockchain authenticating mechanism based on random ferrying (CAMRF) is proposed in the present study. The mechanism first selects high-reputation candidate ferry nodes from ordinary nodes through the improved PageRank algorithm. Then, the consensus random number is generated based on the verifiable random function, and the ferry node group is dynamically elected as the notary group. Finally, the group nodes forward, sign and authenticate cross-domain messages, and use BLS(Boneh-Lynn-Shacham) lightweight aggregate signature technology to verify the authenticity and validity of the messages, while addressing issues related to centralization and security. Both theoretical analysis and experimental results indicate that CAMRF markedly enhances interoperability and strengthens the security and reliability of cross-domain authentication, thereby providing some theoretical significance and high practical value.
基于此,本文设计了一种基于随机摆渡的跨链身份信息互认机制(Cross-blockchain Authenticating Mechanism based on Random Ferrying,CAMRF)。该机制通过改进的PageRank算法[8]选出信誉较高的候选摆渡节点,基于可验证随机函数(Verifiable Random Function,VRF)[9]产生的共识随机数选出摆渡节点组作为公证人组对跨域消息进行转发、签名和认证,可解决传统公证人机制中心化依赖严重等问题,降低合谋攻击风险,还可防止少数摆渡节点恶意拒绝签名对跨链认证造成的影响。由于采用VRF进行选举且周期性轮换摆渡节点组,攻击者无法针对特定摆渡节点进行定向攻击。因此,本机制从多种角度保障了跨链认证过程的安全性,实现了物联网终端高互操作性(不同管理域之间互联互通、无缝协作)跨域认证。
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