Transaction execution system with secure encryption key storage and communications
US4186871A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1978 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Mar 1, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/1016
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A transaction execution system having a multiple account data base and a plurality of transaction terminals in communication with the host. The terminals each include a keyboard, a display, document handlng subsystems, a hardware control subsystem, a communication subsystem and a programmable control subsystem supervising the other subsystems. A user initiates a transaction request by inserting a card, which may have been issued by any of a plurality of cooperating card issuers or banks, into one of the terminals. The issuer identification number is read from the card, and used to search a table of card format and encryption key data. If the corresponding format and key data is located in the table, the terminal requests entry of a preassigned personal ID number through the keyboard. Verification data located on the card by format data from the table is encrypted in response to the key data from the table for comparison with the keyboard entered ID number. If the corresponding format and key data is not located in the table, the card data is sent to the host, which accesses a master table with the issuer identification number, and communicates back to the terminal the corresponding…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.