CPC G06F 21/16 (2013.01) [G06F 21/64 (2013.01)] | 20 Claims |
1. A method for enabling detection of modification of an item of content, the method comprising:
selecting one or more predetermined types of modification for detection;
selecting a set of one or more attributes for the item of content such that, for each of the one or more predetermined types of modification, said type of modification affects the value of at least one attribute in the set of one or more attributes;
obtaining, for the item of content, a respective value of each attribute in the set of one or more attributes; and
watermarking the item of content to embed payload data within the item of content, wherein the payload data comprises (a) the respective value for each attribute in the set of one or more attributes and/or (b) an identifier for retrieving, from a storage, the respective value for each attribute in the set of one or more attributes.
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