IMAGE PROCESSING SYSTEM
First Claim
1. An image processing system decrypting an encrypted image generated by converting at least a partial area of a digital image defined as an aggregation of pixels in a way that uses an encryption key, comprising:
- a decryption key storage unit stored with a decryption key associated with the encryption key in the way of being associated with a user assigned authority for decrypting the conversion area as the area converted by use of the encryption key and for browsing the decrypted area;
a user authenticating unit authenticating the user;
an encrypted image acquiring unit acquiring the decrypting target encrypted image;
a decryption key acquiring unit acquiring the decryption key associated with the authenticated user authenticated by said user authenticating unit from within the decryption keys stored in said decryption key storage unit; and
a decrypting unit decrypting the conversion area in the encrypted image by use of the decryption key acquired by said decryption key acquiring unit to thereby generate the digital image containing the decrypted conversion area about which the authenticated user has the decrypting and browsing authority in the conversion areas.
1 Assignment
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Accused Products
Abstract
An image processing system 100 decrypting an encrypted image generated by converting a partial area of a bitmap-formatted digital image by using an encryption key includes a key information storage unit 21 stored with a decryption key associated with the encryption key in the way of being associated with a user assigned authority to decrypt a conversion area as an area converted by using the encryption key and to browse the decrypted area, a user authenticating unit 24, a key information acquiring unit 22 acquiring the decryption key associated with the authenticated user in the decryption keys stored in the key information storage unit 21, and a decrypting unit 14 decrypting the conversion area in the encrypted image by using the acquired decryption key to thereby generate the digital image containing the decrypted conversion area of which browsing authority is held by the authenticated user in the conversion areas.
24 Citations
15 Claims
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1. An image processing system decrypting an encrypted image generated by converting at least a partial area of a digital image defined as an aggregation of pixels in a way that uses an encryption key, comprising:
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a decryption key storage unit stored with a decryption key associated with the encryption key in the way of being associated with a user assigned authority for decrypting the conversion area as the area converted by use of the encryption key and for browsing the decrypted area; a user authenticating unit authenticating the user; an encrypted image acquiring unit acquiring the decrypting target encrypted image; a decryption key acquiring unit acquiring the decryption key associated with the authenticated user authenticated by said user authenticating unit from within the decryption keys stored in said decryption key storage unit; and a decrypting unit decrypting the conversion area in the encrypted image by use of the decryption key acquired by said decryption key acquiring unit to thereby generate the digital image containing the decrypted conversion area about which the authenticated user has the decrypting and browsing authority in the conversion areas. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image processing system generating an encrypted image based on a digital image defined as an aggregation of pixels, comprising:
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an encryption key storage unit stored with an encryption key associated with a decryption key used for decrypting the encrypted image in the way of being associated with a user assigned authority for decrypting a conversion area as an area converted by using the encryption key in the digital image and browsing the decrypted area; an authorized user designation accepting unit accepting an input of designation of an authorized user authorized to decrypt the conversion area and browse the decrypted area; a digital image acquiring unit acquiring the encrypting target digital image; an encryption key acquiring unit acquiring an encryption key associated with the authorized user accepted by said authorized user designation accepting unit in the encryption keys stored in said encryption key storage unit; and an encrypting unit converting at least a partial area in the digital image by use of the encryption key acquired by said encryption key acquiring unit to thereby generate the encrypted image containing the conversion area that can be decrypted by employing the decryption key associated with the encryption key. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A readable-by-computer recording medium recorded with an image processing program for decrypting an encrypted image generated by converting at least a partial area of a digital image defined as an aggregation of pixels in a way that uses an encryption key, said program making a computer function as:
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a decryption key storage unit stored with a decryption key associated with the encryption key in the way of being associated with a user assigned authority for decrypting the conversion area as the area converted by use of the encryption key and for browsing the decrypted area; a user authenticating unit authenticating the user; an encrypted image acquiring unit acquiring the decrypting target encrypted image; a decryption key acquiring unit acquiring the decryption key associated with the authenticated user authenticated by said user authenticating unit from within the decryption keys stored in said decryption key storage unit; and a decrypting unit decrypting the conversion area in the encrypted image by use of the decryption key acquired by said decryption key acquiring unit to thereby generate the digital image containing the decrypted conversion area about which the authenticated user has the decrypting and browsing authority in the conversion areas.
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15. A readable-by-computer recording medium recorded with an image processing program for generating an encrypted image based on a digital image defined as an aggregation of pixels, said program making a computer function as:
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an encryption key storage unit stored with an encryption key associated with a decryption key used for decrypting the encrypted image in the way of being associated with a user assigned authority for decrypting a conversion area as an area converted by using the encryption key in the digital image and browsing the decrypted area; an authorized user designation accepting unit accepting an input of designation of an authorized user authorized to decrypt the conversion area and browse the decrypted area; a digital image acquiring unit acquiring the encrypting target digital image; an encryption key acquiring unit acquiring an encryption key associated with the authorized user accepted by said authorized user designation accepting unit in the encryption keys stored in said encryption key storage unit; and an encrypting unit converting at least a partial area in the digital image by use of the encryption key acquired by said encryption key acquiring unit to thereby generate the encrypted image containing the conversion area that can be decrypted by employing the decryption key associated with the encryption key.
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Specification