Apparatus and method for counter-based communications in wireless sensor networks and other networks
US8037296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Dec 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method includes wirelessly receiving a message at a receiving node. The method also includes extracting a partial counter value from the message, where the partial counter value represents a subset of bits from a complete counter value of a transmitting node. The method further includes decrypting and authenticating the message based on the partial counter value. Decrypting and authenticating the message could include examining a bitmap to identify a bit value associated with the partial counter value, decrypting and authenticating the message if the identified bit value has a first value, and discarding the message if the identified bit value has a second value. Decrypting and authenticating the message could also include identifying at least one complete counter value at the receiving node based on the partial counter value and attempting to decrypt and authenticate the message using the at least one complete counter value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.