【作者】 闫鸿滨； 袁丁；

【Author】 YAN Hong-bin, YUAN Ding (School of Computer Science, Sichuan Normal University, Chengdu 610068 China)

【机构】 四川师范大学计算机科学学院；

【摘要】 文章采用多层次可验证秘密共享方案,提出了一个基于椭圆曲线密码体制的多层次密钥托管方案。方案不仅能够有效克服易受阈下信道攻击的缺点,验证用户的托管密钥正确性,检查出失效的托管代理,而且能够解决“一次监听,永久监听”的问题,避免监听机构权力过大的现象,还能够防止密钥管理中心与托管代理的欺诈。更多还原

【Abstract】 This paper proposes a multilevel key escrow scheme, based on multilevel secret-sharing scheme and elliptic curve cryptosystem. By using the scheme it not only effectually prevents from subliminal channels attack and LED (Law Enforcement Decryptor) too much power, verifies the pieces of the user’s private key, effectively discovers the failure or corrupted escrow agents, but also solves effectively the problem of "once monitor, monitor for ever".更多还原