The present invention allows the user (author or creator) of a document to specify that certain portions of a document be selected for encryption while other portions of the document remain displayed as created. The user could employ a standard word processing editor technique to highlight (or swipe)...http://www.google.fr/patents/US20080168277?utm_source=gb-gplus-shareBrevet US20080168277 - Method for selective encryption within documents
Numéro de demande: 12/001,475 Numéro de publication: US 2008/0168277 A1 Date de dépôt: 11 déc. 2007 Brevet délivré: US8140857 ( Date de délivrance 20 mars 2012)