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A PROVABLY SECURE CERTIFICATELESS PROXY SIGNATURE SCHEME

机译:一种普遍安全的可信任代理签名方案

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摘要

Proxy signature, a variant of digital signature, is in the limelight in recent years for secure communication. For instance, when a manager is occupied with business matters, or travelling on business, he has to delegate an agent to deal with his day-today office concerns. Therefore, a proxy signature scheme is necessary in this scenario. Although identity-based proxy signature schemes have been proposed in many studies, certificateless public key cryptography (CL-PKC), first proposed by Al-Riyami and Pa-terson, has been widely used to avoid the key escrow problem in identity-based public key cryptography. In this paper, we combine the concepts of certificateless cryptography and proxy signature to propose a certificateless proxy signature scheme from bilinear pairings, and we also present its security model. This scheme is provably secure and existentially unforgeable under the chosen message attack in the random oracle model.
机译:代理签名是数字签名的一种变体,近年来一直受到安全通信的关注。例如,当经理忙于处理业务事务或出差时,他必须委派代理来处理他日常的办公室事务。因此,在这种情况下,代理签名方案是必要的。尽管在许多研究中已经提出了基于身份的代理签名方案,但是由Al-Riyami和Pa-terson首次提出的无证书公共密钥密码术(CL-PKC)已被广泛用于避免基于身份的公共密钥的托管问题。密钥密码学。在本文中,我们结合了无证书加密和代理签名的概念,从双线性对中提出了无证书代理签名方案,并提出了其安全模型。在随机预言机模型中,在选择的消息攻击下,该方案是安全的,并且是不可伪造的。

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