End-to-end authentication of session initiation protocol messages using certificates
US7240366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2002 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Sep 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/1104
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
End-to-end authentication capability based on public-key certificates is combined with the Session Initiation Protocol (SIP) to allow a SIP node that receives a SIP request message to authenticate the sender of request. The SIP request message is sent with a digital signature generated with a private key of the sender and may include a certificate of the sender. The SIP request message may also be encrypted with a public key of the recipient. After receiving the SIP request, the receiving SIP node obtains a certificate of the sender and authenticates the sender based on the digital signature. The digital signature may be included in an Authorization header of the SIP request, or in a multipart message body constructed according to the S/MIME standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.