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.
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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