Methods and systems for encoding and protecting data using digital signature and watermarking techniques
AssigneeIntertrust Technologies Corporation
InventorsXavier Serret-Avila, Gilles Boccon-Gibod
Life of this patent
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Abstract
Systems and methods are provided for determining a presence of a watermark in electronic data. In certain embodiments, a plurality of keys is generated, and a plurality of payloads are retrieved from electronic data using the keys. A statistical indicia of randomness is generated based on the payloads, and the presence of a watermark is determined when the indicia is below a threshold.
Claims21
1-17. (canceled)
A computer-implemented method for encoding an electronic file for protection against unauthorized modification, the method comprising:
- identifying a set of mark-holder candidates in the electronic file;
- identifying a subset of mark-holder candidates of the set of mark-holder candidates;
- and
- inserting a mark in the subset of mark-holder candidates using a first key.
A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, are configured to cause the processor to:
- identify a set of mark-holder candidates in the electronic file;
- identify a subset of mark-holder candidates of the set of mark-holder candidates;
- and
- insert a mark in the subset of mark-holder candidates using a first key.
Dependencies are inferred from the claim text.