Invention Grant
- Patent Title: Security of surveillance media
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Application No.: US16492625Application Date: 2018-04-04
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Publication No.: US11714883B2Publication Date: 2023-08-01
- Inventor: Michel Angel , Hervé Retaureau , Antony Celletti
- Applicant: NAGRAVISION S.A.
- Applicant Address: CH Cheseaux-sur-Lausanne
- Assignee: Nagravision Sàrl
- Current Assignee: Nagravision Sàrl
- Current Assignee Address: CH Cheseaux-sur-Lausanne
- Agency: Hoyng Rokh Monegier B.V.
- Agent David P. Owen
- Priority: EP 164869 2017.04.04
- International Application: PCT/EP2018/058628 2018.04.04
- International Announcement: WO2018/185174A 2018.10.11
- Date entered country: 2019-09-10
- Main IPC: G06F21/10
- IPC: G06F21/10 ; H04L9/08 ; H04L9/40 ; H04N7/18 ; H04N21/2347 ; H04N21/266

Abstract:
A media device receives a domain key from a service provider. The media device further encrypts media with a media key and encrypts the media key with the domain key to form an encrypted media token: the protected media key is encapsulated in an encrypted media token. The service provider may then receive the encrypted media token and one or more receiving entity identifiers relating to a receiving entity and ascertain whether the receiving entity is entitled to access media from the media device. If the receiving entity is entitled to access media from the media device, the service provider decrypts the cryptographic media token using the domain key to obtain the media key and providing the media key to the receiving entity. As such, an authenticated receiving entity may obtain the media key necessary to decrypt the media. Moreover, there is no requirement for any intermediate entity to have similar access and thus the encryption provided by the media key is in place throughout the transport of the media from media device to receiving entity.
Public/Granted literature
- US20200050738A1 Security of Surveillance Media Public/Granted day:2020-02-13
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