一种多用户可检索加密方法

A Multi-User Retrievable Encryption Technology

关键字安全的可检索加密技术可以解决系统中包括不安全的服务器端时存在的关键字猜测攻击的问题。本文针对云计算和移动计算时代普遍存在的多客户端系统中一对多群发信息的应用场景,通过在系统中添加公钥的方式,提出了关键字安全的多用户可检索加密技术(SESKM)。该方案实现了一人发信多人接收,一人加密多人解密的功能。安全分析表明,该方案具备前向安全和后向安全。性能分析表明,该方案满足常规的应用场景。

SEBSK,which means keyword searchable security encryption technology,can solve the problem that the system may include an insecure server vulnerable to keyword guessing.Aimed at one-to-many group messaging in multi-client systems which are common in cloud computing and mobile computing era,this paper proposes SEBSK,a new secure multi-user-searchable encryption technology,by adding public key to the system.This program makes it possible for one person to encode and send messages to many person who can encode and receive and at the same time.Safety analysis shows that this program can ensure forward security and backward security at the same time.Function analysis shows that it can satisfy the usual demand.