ElGamal Knowledge Proof and Its Application in the Deputy Signature System
Bai Ying-cai · Jisuanji gongcheng · 2001
The nature of discrete-logarithm-based digital signature scheme is that the private key's owner gives a knowledge proof that he/she knows the discrete logarithm of the public key. In this paper, we first present the concept of ElGamal knowledge proof. Then, several corresponding properties are discussed. Finally, we show how to implement a deputy signature protocol with ElGamal knowledge proof.