Electronic document processing system
First Claim
1. An electronic document processing system comprising:
- a digital image generating unit generating a digital image defined as an aggregation of pixels from a predetermined range of an original electronic document including text information, font information, graphs, images or layout information;
an image encrypting unit generating an encrypted image by converting at least a partial area of the digital image generated by said digital image generating unit by use of a key information;
a data encrypting unit extracting data contained in the predetermined range of the original electronic document and encrypting the extracted data by use of the key information;
an encrypted data storing unit storing the encrypted data; and
an encrypted electronic document generating unit generating an encrypted electronic document by replacing the data contained in the predetermined range in the original electronic document with the encrypted image.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic document processing system 900 includes a digital image generating unit 15 generating a digital image in a predetermined range of the electronic document; an image encrypting unit 11 generating an encrypted image by converting at least a partial area of the generated digital image; a data encrypting unit 21 generating encrypted data by extracting data contained in the predetermined range in pieces of data organizing the electronic document and encrypting the data; an encrypted data storing unit 22 storing the encrypted data; and an encrypted electronic document generating unit 23 generating an encrypted electronic document by replacing the data contained in the predetermined range in the electronic document with the encrypted image.
14 Citations
12 Claims
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1. An electronic document processing system comprising:
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a digital image generating unit generating a digital image defined as an aggregation of pixels from a predetermined range of an original electronic document including text information, font information, graphs, images or layout information; an image encrypting unit generating an encrypted image by converting at least a partial area of the digital image generated by said digital image generating unit by use of a key information; a data encrypting unit extracting data contained in the predetermined range of the original electronic document and encrypting the extracted data by use of the key information; an encrypted data storing unit storing the encrypted data; and an encrypted electronic document generating unit generating an encrypted electronic document by replacing the data contained in the predetermined range in the original electronic document with the encrypted image. - View Dependent Claims (2, 3, 4, 5)
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6. An electronic document processing system comprising:
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an encrypted data acquiring unit acquiring encrypted data generated by encrypting data by use of a key information, the data being a target of a digital image contained in a predetermined range of an original electronic document, the data being replaced with an encrypted image generated by converting at least a part of the digital image generated from the predetermined range of the original electronic document including text information, font information, graphs, images or layout information; a data decrypting unit decrypting, by use of the key information, the encrypted data acquired by said encrypted data acquiring unit to generate decrypted data; and a decrypted electronic document generating unit generating decrypted electronic document by replacing the encrypted image included in the original electronic document with the decrypted data. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer-readable medium recorded with an electronic document processing program which when executed by a processor causes a computer to function as:
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a digital image generating unit generating a digital image defined as an aggregation of pixels from a predetermined range of an original electronic document including text information, font information, graphs, images or layout information; an image encrypting unit generating an encrypted image by converting at least a partial area of the digital image generated by said digital image generating unit by use of a key information; a data encrypting unit extracting data contained in the predetermined range of the original electronic document and encrypting the extracted data by use of the key information; an encrypted data storing unit storing the encrypted data; and an encrypted electronic document generating unit generating an encrypted electronic document by replacing the data contained in the predetermined range in the original electronic document with the encrypted image.
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12. A non-transitory computer-readable medium having thereon an electronic document processing program which when executed by a processor causes a computer to function as:
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an encrypted data acquiring unit acquiring encrypted data generated by encrypting data by use of a key information, the data contained in the a predetermined range of an original electronic document and replaced with an encrypted image generated by converting at least a part of a digital image generated from the predetermined range of the original electronic document including text information, font information, graphs, images or layout information; a data decrypting unit generating decrypted data which is a target of the digital image generation by decrypting, by use of the key information, the encrypted data acquired by said encrypted data acquiring unit to generate decrypted data; and a decrypted electronic document generating unit generating decrypted electronic document by replacing the encrypted image included in the original electronic document with the decrypted data.
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Specification