H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 9/32 (2006.01)
Patent
CA 2374196
An electronic document (200) and a corresponding printed document capable of having their legitimacy protected, and a method, an apparatus, a computer program product and a system for protecting the legitimacy of electronic and printed documents are disclosed. The electronic document (200) includes: content of an original document in electronic form, a content digest for the content the original document in electronic form, an electronic seal or e-seal (224) for authenticating the original document in electronic form, the e-seal (224) including a visible seal of an authority and the content digest embedded in the visible seal; an optically sensitive or sensible component (120C) added to the authenticated document for printing using a trusted printing process. The optically sensitive or sensible component (120C) contains information for indicating copying or modification of the printed document in a copy or modified version of the printed document.
L'invention concerne un document électronique (200) et un document imprimé correspondant dont la légitimité peut être protégée, ainsi qu'un procédé, un appareil, un programme informatique et un système conçus pour protéger la légitimité de documents électroniques et imprimés. Le document électronique (200) comprend le contenu d'un document original sous forme électronique, un condensé dudit contenu, un cachet électronique, ou Ce (224), servant à authentifier le document original sous forme électronique, le Ce comprenant un cachet visible d'une autorité intégrant le condensé, une composante (120C) optiquement sensible ajoutée au document authentifié aux fins de son impression par un procédé d'impression fiable. Ladite composante (120C) renferme des informations indiquant la copie ou la modification du document imprimé dans une copie ou une version modifiée du document imprimé.
Deng Huijie
Sun Qibin
Wu Jiankang
Kent Ridge Digital Labs
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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