计算机科学 ›› 2022, Vol. 49 ›› Issue (6A): 537-543.doi: 10.11896/jsjkx.220200139
陈彦冰1, 钟超然1, 周超然1, 薛凌妍1, 黄海平1,2
CHEN Yan-bing1, ZHONG Chao-ran1, ZHOU Chao-ran1, XUE Ling-yan1, HUANG Hai-ping1,2
摘要： 安全的跨域身份验证是保证医疗数据互联互通的关键,而现有的跨域认证模型大多依赖可信第三方,存在繁重的密钥管理开销和私钥托管问题,通过引入区块链和无证书认证技术,提出一种基于医疗联盟链的安全高效的跨域认证方案。采用哈希函数、数字签名等密码学技术实现对异域用户安全可靠的身份验证,并使用改进的实用拜占庭机制,保证在没有中心节点的情况下联盟中的医疗机构可以快速对验证结果达成一致。分析表明,在安全方面,该方案具有抵抗分布式攻击等安全属性;在效率方面,与已有跨域认证方案相比,该方案在计算开销上、通信开销上都有优势。
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