基于椭圆曲线的指定验证者代理签名方案

A Designated-verifier Proxy Signature Scheme Based on the Elliptic Curve

将椭圆曲线密码体制和指定验证者代理签名思想相结合,提出了一种基于椭圆曲线的指定验证者代理签名方案.该方案不仅可以有效地实现代理签名者代表原始签名者生成代理签名的目的,而且限定了只有被指定的签名验证者可以验证并向第三方证明签名的有效性.和已有的方案相比,该方案可以用较小的开销实现较高的安全性,具有很好的实用性.

In this paper, a designated-verifier proxy signature scheme based on the elliptic curve is proposed by applying the idea of the designated-verifier proxy signature scheme to elliptic curve cryptosystem,and a proxy signer can not only generate a proxy signature on behalf of original signer, but also generate a valid proxy signature on behalf of original signer for deslgnated-verifier in the scheme. Compared with the previous works, the scheme can get high security with low cost, and it has good practicability.