摘要
采用动态可验证秘密共享方案,设计了一个基于椭圆曲线密码体制的动态密钥托管方案,有效地解决了共享秘密的动态更新、子密钥动态分配问题,且易于实现、效率高,提高了密钥托管的动态性和灵活性;该方案不仅能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,并能防止密钥管理中心与托管代理的欺诈。
Based on a dynamic secret-sharing scheme and elliptic curve cryptosystem, a dynamic key escrow scheme is presented in this paper. The problem of renew shared secret and dynamic sub-secret allocation are properly treated in the scheme. The scheme is efficient and practical. Which increases flexibility and dynamic of key escrow. 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”.
出处
《南通职业大学学报》
2007年第3期83-87,共5页
Journal of Nantong Vocational University
基金
国家自然科学基金项目(60473030)
