Personalized whitebox descramblers

Details Personalized whitebox descramblers Personalized whitebox descramblers

H - Electricity

04

L

H04L 9/12 (2006.01) H04N 21/4405 (2011.01)

Patent

CA 2735080

The invention prevents intercepted keys from being used in unauthorized whitebox descrambler modules for the decryption of a ciphertext. Hereto a receiver with a personalized whitebox descrambler is proposed, whereby a part of the descrambling operation of the personalized descrambler is performed in a preprocessing module external to the descrambler.

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