Systems and methods for digital content security

Details Systems and methods for digital content security Systems and methods for digital content security

G - Physics

06

T

G06T 1/00 (2006.01)

Patent

CA 2570340

The present invention provides systems and methods for digital content security. In one embodiment, a method includes generating an input key, generation of the input key comprising a sequence of operations, the operations including: performing at least one circular-bit-shift operation on a gradient image, and performing at least one block-wise permutation on the gradient image. One such method further includes performing a fragile watermark-embedding algorithm using the input key. Another such method includes utilizing the input key for encryption.

L'invention concerne des systèmes et des procédés pour la sécurité de contenu numérique. Selon une variante, on décrit un procédé qui consiste à fournir une clé d'entrée, cette procédure comprenant une séquence d'opérations, à savoir : conduite d'au moins une opération de décalage binaire circulaire sur une image gradient, et conduite d'au moins une permutation de bloc sur cette image. Un autre procédé consistera à exécuter un algorithme d'incorporation de filigrane fragile au moyen de la clé d'entrée, et un autre encore consistera à utiliser la clé d'entrée aux fins de chiffrement.

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