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Distributed Signcryption Schemes with Formal Proof of Security

机译:具有正式安全证明的分布式签约计划

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摘要

A distributed signcryption scheme was proposed by Mu and Varadharajan [18] in 2000. Since then some more distributed signcryption schemes have been proposed [11,13]. But formal security models and security proofs have not been presented in any of these schemes. In this paper, we propose formal security model for distributed signcryption for confidentiality and unforgeability. We also modify schemes proposed by Mu & Varadharajan [18] and Gupta et al [11] to achieve formally provable security. We show that these modified schemes provide confidentiality against chosen ciphertext attack and unforgeability against chosen message attack.
机译:通过Mu和Varadharajan提出了一种分布式签约方案[18]。因此,提出了一些更多分布的签约计划[11,13]。但是,任何这些方案都没有提供正式的安全模型和安全证据。在本文中,我们提出了用于保密性和不可识别性的分布式签约的正式安全模型。我们还修改MU&VARADHARAJAN [18]和GUPTA等[11]提出的计划,以实现正式提供的安全性。我们表明,这些修改的方案对选择的密文攻击和不可识别的对选择的消息攻击提供了机密性。

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