Method for generating digital watermarks for electronic...

Details Method for generating digital watermarks for electronic... Method for generating digital watermarks for electronic...

H - Electricity

04

L

H04L 9/32 (2006.01) G06T 1/00 (2006.01) H04N 1/32 (2006.01)

Patent

CA 2343275

The invention relates proof of authorship by means of digital watermarks. The digital watermark is provided with a document hash value (hm) before concealment, in addition to proof of identity (id), and can also be provided with a time value (t), in order to improve the range of options available in contentious issues. The inventive method is suitable for use in proving the authorship of documents that are subject to copyright protection.

La présente invention concerne l'établissement de la preuve de la qualité d'auteur à l'aide de filigranes numériques. Pour améliorer les possibilités dans les cas litigieux, le filigrane numérique est doté, avant d'être caché près de la preuve d'identité (id), de la valeur de hachage h(m) du document et peut en outre être doté d'une valeur temporelle (t). Ledit procédé est adapté pour apporter la preuve de l'authenticité de documents qui sont soumis à la protection du droit d'auteur.

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