An improved scheme is proposed to overcome the disadvantages,which ensure the voter to give out his correct private key by using two different bases and the same discrete logarithm proof of knowledge.

Combining process of bidding and cryptography, an efficient and secure inviting public bidding and bidding protocol of construction engineering is proposed with signature based on proof of knowledge.

An efficient and secure English auction protocol is proposed with signature based on proof of knowledge.

In this paper, by the combined use of verifiable secret sharing and knowledge proof,we build a robust and computation- ally secure Distributed Key Distribution Scheme based on the assumption of a Decisional Diffie- Hellmen problem.

By the combined use of knowledge proof and verifiable secret sharing, the scheme has the properties of simple structure and high security.

Mutual authentication scheme based on USB key and zero-knowledge proof;

Study on signature schemes based on zero-knowledge proof;

A Zero-Knowledge Proof of the ElGamal s Digital Signature;

Electronic cash based on zero knowledge proof;

The improved system utilizes good properties of elliptic curve cryptography system and adopts zero knowledge proof.

A new kind of zero knowledge proof algorithm is established based on module operation.