Research And Realization On The Protocol Of Authentication And Share-Secrecy Communication

With the development of network, people begin to pay more and more attention to the network's security. Secure communication is becoming one of the most important parts of network's security. It is significant to research on the secure technology further.This thesis introduces the main contents and the situation of network's security, and analyzes the secure technologies and secure protocols, and also discusses the technologies about authentication and share-key creation. On the basis of these, a new protocol on authentication and share-key creation is put forward. The protocol can ensure the users to communicate through the public network in security.The author makes research and discussions about the cryptogrammic arithmetic and the protocol of authentication in detail. The main contents and characteristic as the following:1. Learning the technology of public-key cryptogram, authentication, digital signature, and analyzing the typical network's security protocol. On the basis of these, designing a new method of authentication.2. On the basis of the technology about key-assignment and key-exchange, designing a new method of share-key creation, which combines the Diffie-Hellman key-exchange, hash function and the public-key certification.3. The protocol can fulfill the authentication dependable and self-governed, and have no use for anyone else's help. The new share-key is fresh and has the characteristic of "one time one key".4. Using analytical tool SVO logic to analyze the authentication and share-key creation protocol, and prove that the protocol is secure in logic.