| 摘要 |
<p>A method and system for providing encryption resistant watermarking of data is described. The method and system comprises encoding a string of symbols, each having a respective symbol value, as a sequence of vectors where each vector includes a respective number of repetitions of a sub-vector of a predefined length, such that the respective number of the repetitions in each vector in the sequence is indicative of the respective symbol value of a corresponding symbol in the string. This sequence of vectors is then inserted into the item of content including digital data to apply a watermark to the item of content. This insertion process may involve interleaving the vectors with gaps of known lengths containing arbitrary data and may involve insertion prior to the vector sequence a marker comprising a concatenation of a number of copies of a marker vector. The length of the sub-vector may be chosen to be an integer divisor of a block size of a block cipher that is to be applied to the item of content after application of the watermark thereto.</p> |
