Signed document transmission system
US4625076A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1985 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Mar 11, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
On the transmitting side, a signature corresponding to a document to be transmitted is generated using a random number and the document as variables and on the basis of a congruent polynomial of second or higher degree with respect to the random number, secret key information and public key information produced based on the secret key information. The signature and the document are transmitted in digital form. On the receiving side, the congruent polynomial is operated using the received signature and document in place of the random number and the document employed on the transmitting side, and the validity of the received signature and document is verified on the basis of the result of the operation and the public key information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.