Communication system and communication method
US6018581A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 28, 1997 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Feb 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication system can maintain high security in communication between a communication apparatus and a terminal. The communication system includes the communication apparatus and the terminal provided with a memory unit for storing data for specifying function of the communication apparatus. The communication apparatus and the terminal include random number generators for generating random numbers, encryption/decryption key preparing units for preparing encryption/decryption keys on the basis of both random numbers and generated by the respective random number generators of the communication apparatus and the terminal and a secret key held in common by the communication apparatus and the terminal, and encryption/decryption processing units for encrypting or decrypting communication data between the communication apparatus and the terminal containing the data by means of the encryption/description key, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.