Image processing apparatus, image processing method and image processing program
First Claim
1. An apparatus for processing an image comprising:
- a storage section having a plurality of individual storage areas each adapted to be associated with a public key;
a common-key generation section for generating a common key corresponding to image data;
an encrypted-image-data generation section for encrypting said image data using said common key to generate encrypted image data; and
an encrypted-common-key information generation section for encrypting said common key using said public key to generate encrypted-common-key information;
wherein said image processing apparatus is designed to store said encrypted-common-key information in one of said individual storage areas which is associated with said public key used in generating said encrypted-common-key information.
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Accused Products
Abstract
The scanner apparatus incorporating a scanner section, a printer section, an operator panel section, a storage section, a network communication section and a processing section is connected to various terminal units, such as a client terminal, via a network. This scanner apparatus is operable, when data is stored in a box, to generate a common key on a data-by-data basis so as to encrypt the entire data using the common key, and then encrypt only the common key using a public key assigned to each box. The present invention can provide means for use in a network system where an image processing apparatus and others are connected to each other via a network, to allow digital data, such as document data or image data, to be encrypted/decrypted without deterioration in processing speed and processing efficiency.
12 Citations
16 Claims
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1. An apparatus for processing an image comprising:
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a storage section having a plurality of individual storage areas each adapted to be associated with a public key; a common-key generation section for generating a common key corresponding to image data; an encrypted-image-data generation section for encrypting said image data using said common key to generate encrypted image data; and an encrypted-common-key information generation section for encrypting said common key using said public key to generate encrypted-common-key information; wherein said image processing apparatus is designed to store said encrypted-common-key information in one of said individual storage areas which is associated with said public key used in generating said encrypted-common-key information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of processing an image comprising:
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associating a public key with a specific one of a plurality of individual storage areas formed in a storage section of an image processing apparatus; generating a common key corresponding to image data; encrypting the image data using said common key to generate encrypted image data; encrypting said common key using said public key to generate encrypted-common-key information; and storing said encrypted-common-key information in said specific individual storage area associated with said public key used in generating said encrypted-common-key information.
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16. A program, embedded in a computer readable medium for allowing a computer to execute a procedure for processing an image, said procedure comprising:
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associating a public key with a specific one of a plurality of individual storage areas formed in a storage section of an image processing apparatus; generating a common key corresponding to image data; encrypting the image data using said common key to generate encrypted image data; encrypting said common key using said public key to generate encrypted-common-key information; and storing said encrypted-common-key information in said specific individual storage area associated with said public key used in generating said encrypted-common-key information.
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Specification