Patent ID: 8948385
Filing Date: 2015-02-03
Classification: H04N

Abstract:
1. An electronic document encrypting system including a processor, comprising: a keyword detecting unit configured to detect a keyword contained in an electronic document by comparing a character string in the electronic document with the keyword defined as a predetermined character string; an encryption area extracting unit configured to extract an encryption target area, which is associated with the keyword detected by said keyword detecting unit but excludes the character string of the detected keyword, from the electronic document; a digital image generating unit configured to generate a digital image of the encryption target area extracted by said encryption area extracting unit in the electronic document; an encrypting unit configured to encrypt the digital image generated by said digital image generating unit, by converting pixels of the digital image on the basis of an encryption key; and an encrypted electronic document generating unit configured to generate an encrypted electronic document, based on the electronic document, by replacing the encryption target area extracted by said encryption area extracting unit with the encrypted digital image encrypted by said encrypting unit.