Encryption of a compressed video stream

Details Encryption of a compressed video stream Encryption of a compressed video stream

H - Electricity

04

N

H04N 21/2347 (2011.01)

Patent

CA 2438599

A method for encrypting a compressed video stream comprising independent data blocks and differential data blocks includes the steps of encrypting the independent data blocks with a different level of encryption than that used for the differential data blocks. In one embodiment, the differential data blocks are unencrypted. The method allows the reception of a compressed data stream using powerful algorithms on terminals having small cryptographic capacities.

Le but de la présente demande est de permettre la réception d'un flux de données compressée par l'utilisation d'algorithmes puissants sur des terminaux disposant de faibles capacités cryptographiques. Ce but est atteint par une méthode d'encryption d'un flux vidéo compressé, comprenant des blocs de données indépendantes et des blocs de données différentielles consistant à encrypter selon un niveau d'encryptage différent, les blocs de données indépendantes et des blocs de données différentielles.

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