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中文摘要：
基于自证明公钥密码体制,提出一种适用于物联网通信的高效在线/离线签密方案,以解决物联网中因信息在不安全信道上传输而被窃取或篡改的问题。运用随机预言机模型,在适应性选择身份和消息攻击下,证明了新方案的密文是语义安全的,并且签密是存在性不可伪造的。由于新方案无双线性对运算,比现有的在线/离线签密方案更高效。同时,新方案具有可公开验证性以及无密钥托管等优点。
英文摘要：
To solve the problem that in Internet of Things the information transmitted over an insecure channel may be eavesdropped or tampered,we proposed a new efficient online / offline signcryption scheme based on self-certified public key authentication suitable for Internet of Things. It was proved that the cipher of new scheme was indistinguishable and the signcryption was existentially unforgeable against the attacks of adaptive chosen message and identity in random oracle model. Because of without bilinear pairing operation,the new scheme was more efficient than those existing online / offline signcryption schemes. At the same time,it has the properties that can be verified in public and without key escrow.
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