Method and apparatus for exchanging messages
US11424933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2018 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Dec 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/326
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and to an apparatus for achieving cryptographic protection of a plurality of messages in a message exchange, for example, in particular the cryptographic protection being implemented by means of digital signatures and nonces is provided. The nonces are not transmitted directly, but rather can be reproducibly calculated from preceding messages, wherein a checksum of a previous message is also considered for each nonce. Consideration is implemented in such a way that cryptographical calculations in particular intended for the creation of the digital signature and the nonce may be calculated one single time and not separately for the nonce and the digital signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.