Method and apparatus for identifying and monitoring VoIP media plane security keys for service provider lawful intercept use
US8934609B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2006 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Jul 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mechanism is described that enables encrypted end-point communications in a VoIP network to be accessed by a service provider. The mechanism includes a session information retrieval component which gathers session information such as encryption keys for each session that traverses a network element. The encryption keys may be used to decrypt data to make it available for lawful interception. A media stream monitoring component monitors media streams and verifies that the identified keys for each session are valid, to ensure continuity in compliance with LI regulations. Advantageously a security alert component may be used to controls further session operation for those sessions identified as potential security risks. With such an arrangement, the service provider can satisfy the legal requirement to provide interception, verify that the accuracy of the legal interception support and take appropriate steps to handle security risks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.