排序方式: 共有130条查询结果,搜索用时 62 毫秒
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文中在前人的一种基于身份的无线传感器网络加密方法的基础上进行改进:一是用完备的Boneh—Franklin算法代替基本的Boneh—Franklin算法,因为基本的Boneh-Franklin算法容易遭受选择密丈攻击,并将完备的Boneh—Franklin算法无缝地应用到无线传感器网络加密通信中;二是在BF—IBE和BLS短签名方案基础上提出了一种基于身份的短签名方案,其签名长度短(大约160bit),特别适用于带宽受限的无线传感器网络,并对算法的复杂性、安全性和存储需求等方面进行了分析。 相似文献
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In order to solve the problem of secure transmission of messages with multiple receivers,a code-based generalized signcryption scheme with multi-receiver was designed.Firstly,a multi-encrypted McEliece scheme that can meet the security of IND-CCA2 was designed.Combined with the CFS signature scheme,the multi-receiver signcryption and generalized signcryption scheme based on code were designed.The security analysis shows that the multi-receiver generalized signcryption scheme can meet the security of IND-CCA2 in terms of confidentiality and can meet EUF-CMA security in terms of unforgeability.Compared with other similar multi-receiver signcryption schemes,the proposed scheme does not include exponential,bilinear pairing operations,etc.,and has high computational efficiency and the advantage of anti-quantum computing.Compared with the method of signing-then-encrypting method,the proposed scheme has the smaller private key and higher efficiency. 相似文献
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文中采用双线性对的签名和验证方式,提出了一种基于身份的多重代理盲签名方案。它综合了多重代理签名和盲签名的优点,能够有效地防止授权人冒充多重代理人对消息进行签名。 相似文献
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理想功能是UC安全协议的基本单元和核心内容.在UC安全框架下协议设计的首要步骤就是要将协议所希望完成的功能抽象为一个"理想功能","理想功能"的合理定义不仅要从定义上保证安全,更重要的是要兼顾其可实现性.本文定义了基于身份的签名机制(IBS)在UC安全框架下对应的理想功能FIBS,证明了其可实现性以及UC安全的IBS与经典IBS安全定义EUF-CMIA安全之间的等价关系,保证了在构造复杂环境下UC安全协议的时候,EUF-CMIA安全的IBS可以作为一个模块被安全调用. 相似文献
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无线Mesh网络中的虫洞攻击检测研究 总被引:1,自引:0,他引:1
为了有效检测出无线mesh网络中的虫洞攻击,针对微软提出的支持多射频的链路质量源路由MR-LQSR(multi-radio link-quality souse routing)协议提出了一种虫洞攻击模型,并根据虫洞攻击及无线mesh网的特点,在基于端到端的虫洞攻击检测算法、投票机制、邻居检测机制和基于身份加密技术的基础上提出一种基于端到端的虫洞攻击检测机制.最后通过理论分析和实验证实了该机制能有效地抵御无线mesh网中的虫洞攻击和提高无线mesh网的安全性. 相似文献
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Concurrent signature was introduced as an efficient approach to solving the problem of fair exchange of signatures. Almost all fair exchange e-commerce protocols based on concurrent signature that have been proposed until now either do not provide message privacy protection or adopt the sign-then-encrypt scheme to provide confidentiality. However, confidentiality is an important requirement of fair exchange e-commerce protocol. In this paper, a new concept called concurrent signcryption which
combines the concepts of concurrent signature and signcryption together to resolve the confidentiality problem in e-commerce systems based on concurrent signature. We also propose a concurrent signcryption scheme using bilinear pairings and prove its security in the random oracle model. Compared with the sign-then-encrypt scheme using bilinear pairings, our scheme enjoys shorter
message length and less operation cost. Moreover, in our scheme the two ambiguous signcryptions can be published in any order. 相似文献
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An authentication multiple key agreement protocol allows the users to compute more than one session keys in an authentication way. In the paper, an identity-based authentication multiple key agreement protocol is proposed. Its authentication part is proven secure against existential forgery on adaptively chosen message and ID attacks under the random oracle model upon the CDH assumptions. The session keys are proven secure in a formal CK security model under the random oracle model upon the CBDH assumptions. Compared with the previous multiple key agreement protocols, it requires less
communication cost. 相似文献
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