Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2002-11-08
2009-12-01
Smithers, Matthew B (Department: 2437)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C380S210000, C380S212000
Reexamination Certificate
active
07627762
ABSTRACT:
The present invention concerns a device and a process for signing digital streams, each of them comprising contents, related to audiovisual information, and a signaling. The device applies encrypting to selectively determined descriptors of the signaling, called authenticated descriptors, to obtain signature. The invention also concerns corresponding authentication device and process. Application to authentication of DVB/MPEG digital streams, notably for MHP.
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Sedlmeyer: “Multimedia Home Platform-Standard 1.0.1”, Femseh Und Kinotechnik, VDE Verlag GmbH, Berlin, De, vol. 55, No. 10, Oct. 2001, pp. 593-597.
Searc Report Dated May 23, 2003.
Durand Alain
Lesenne Laurent
Pasquier Frédéric
Schaefer Ralf
Levy Robert B.
Shedd Robert D.
Smithers Matthew B
Thomson Licensing
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