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Cryptanalysis and improvement of blind signcryption scheme based on elliptic curve

机译:基于椭圆曲线的盲签密方案的密码分析及改进

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摘要

Blind signcryption schemes are the extension of signcryption schemes. They are used to protect the privacy and identity of the sender from other users, especially in electronic voting and electronic cash payment systems. A number of blind signcryption schemes are introduced over the years and some of them are proved to be insecure. In this Letter, the authors analysed a recently proposed blind signcryption scheme based on elliptic curves and proved it is insecure. Their analysis showed that the proposed scheme is unable to provide the claimed security attributes of message integrity, authentication, unforgeability, and signer non-repudiation. After successful cryptanalysis, they introduced a modified version of this scheme to overcome the security flaws and weakness.
机译:盲签密方案是签密方案的扩展。它们用于保护发件人的隐私和身份免受其他用户的侵害,尤其是在电子投票和电子现金支付系统中。这些年来,引入了许多盲签名算法,其中一些被证明是不安全的。在这封信中,作者分析了最近提出的基于椭圆曲线的盲符号加密方案,并证明它是不安全的。他们的分析表明,所提出的方案无法提供所声称的消息完整性,身份验证,不可伪造和签名人不可否认的安全属性。在成功进行密码分析之后,他们推出了该方案的修改版本,以克服安全性的缺陷和弱点。

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