Code word Based Bi-Server Authentication and Key Exchange Encryption Technique

The data transfer and communication happening between the client and server or the source to destination should be made in some secure way. It must be protected and authenticated. the passwords related to that all will be stored in a centralized database. The majority of codeword-based user authentication systems assume complete reliance in the authentication server, this refers to the location where centralized databases store passwords in plain text or easily inferred code verification information. System defenses against server-side offline dictionary attacks are nonexistent. In the event that insiders or outsiders hack the authentication server, all user code words become public. which could have severe legal and financial ramifications for a business. A codeword-based client authentication and confidential key exchange system using cutting-edge bi-server architecture serves as the answer to the aforementioned problems. The sever providing the front-end service communicates directly with users in this setup; the control server remains in the background. The proposed system provides security against the offline dictionary attacks that can happen from any of the servers. The proposed work has been implemented by using java and netbeans IDE 6.1.