Usuda

In respect to the shortcomings of Mambo-Usuda-Okamoto's proxy signature, this paper proposes a new proxy signature scheme by introducing MUO proxy signature and elliptic-curve algorithm, and applying ECDSA into MUO.

首先分析了Mambo-Usuda-Okamoto的代理签名方案的不足，通过引入MUO代理签名及椭圆曲线算法，将ECDSA应用于MUO方案。

Mambo, Usuda, and Okamoto first introduced the concept of proxy signature in 1996 [ 2].

代理数字签名方案是由Mambo、Usudu和Okamoto在文献[2]中首次提出的。

The concept of proxy signature introduced by Mambo, Usuda, and Okamoto in 1996 allows a designated person, called a proxy signer, to sign on behalf of an original signer.

代理签章概念是指由一个指定的人所谓代理签章者代表原签章者去执行签署行为，由Mambo，Usuda等人在1996年提出。

In 1996, Mambo, Usuda and Okamoto firstly proposed the concept of proxy signature.

1996年，Mambo、Usuda和Okamoto首先明确提出并系统阐述了代理签名的概念。