System and method of lawful access to secure communications
US9413530B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jan 11, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Jan 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for secure communications are provided. In some aspects, a method of signalling an interception time period is described. At least one keying information used by a key management service (KMS) to regenerate a key is stored. A start_interception message is signaled from an administration function (ADMF) to a call session control function (CSCF). A halt_message is signaled from the ADMF to the CSCF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.