Patent ID: 8726029
Filing Date: 2014-05-13
Classification: G06F,H04L

Abstract:
1. A system for cryptographic processing of content, comprising: means for receiving the content; means for providing a plurality of look-up tables representing a white-box implementation of a combined cryptographic and watermarking operation, the look-up tables representing processing steps of the combined cryptographic and watermarking operation and the plurality of look-up tables being arranged for being applied according to a predetermined look-up scheme, the predetermined look-up scheme prescribing that an output of a first look-up table of the plurality of look-up tables be used to generate an input of a second look-up table of the plurality of look-up tables, wherein the combined cryptographic and watermarking operation comprises a cryptographic operation and a watermarking operation; and a means for looking up values in the plurality of look-up tables in dependence on the content received and in accordance to the predetermined look-up scheme, thereby applying the combined cryptographic and watermarking operation to the content to obtain processed content, wherein the watermarking operation is incorporated in at least one tail table of the plurality of look-up tables, the at least one tail table being a last table involved in the cryptographic operation.