End-to-end encryption system and method of operation
US4578530A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1983 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Dec 7, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/1016
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
An efficient end-to-end encryption system including key management procedures for providing secure, financial data communication between a system user at one of a plurality of transaction terminals of one of a plurality of acquirer institutions and one of a plurality of issuer institutions, with selected elements of the data being encrypted, decrypted, and processed using a onetime session key which is similarly encrypted with master keys and efficiently sent along with the specific segments of the request and response messages. A session key authentication code is utilized to prevent the replay of a previously used session key, thereby precluding undetected message replay or undetected message or data element substitution or insertion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.