Challenge-response authentication and key exchange for a connectionless security protocol
US6377691B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1996 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Dec 9, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosed system uses a challenge-response authentication protocol for datagram-based remote procedure calls. Using a challenge-response authentication protocol has many advantages over using a conventional authentication protocol. There are two primary components responsible for communication using the challenge-response protocol: a challenge-response protocol component on the client computer (client C-R component) and a challenge-response protocol component on the server computer (server C-R component). In order to start a session using the challenge-response protocol, the client C-R component first generates a session key. The session key is used by both the client C-R component and the server C-R component for encrypting and decrypting messages. After creating the session key, the client C-R component encrypts a message containing a request for a remote procedure call and sends it to the server C-R component. In response, the server C-R component sends a challenge to the client C-R component. The challenge contains a unique identifier generated by the server C-R component. The client C-R component responds to the challenge by sending a challenge response and the session key…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.