Method for establishing a key using over-the-air communication and password protocol and password protocol
US6192474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jul 31, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In the password protocol, the communicating parties exchange calculation results, which each include an exponential, to generate a key. In generating the calculation results, each party adds the password to their respective exponential. If the authorizing information previously sent by one party is acceptable to the other party, then this other party uses the key established according to the password protocol. The channel authorizing information is sent over a secure communication channel. The secure communication channel is also used in other embodiments to verify a hash on at least one calculation result sent between the parties. If the hash is verified, then a key is established using the calculation results sent between the parties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.