Image forming apparatus, image reproducing apparatus and image processing system
First Claim
1. An image forming apparatus comprising:
- a first generating part configured to generate an encrypted image data by subjecting an input image data to a predetermined encryption process;
a second generating part configured to generate a decryption key that is used when decrypting the encrypted image data, said second generating part generating a different decryption key every time the encrypted image data is generated, and generating an identifier that is uniquely determined based on the encrypted image data; and
an outputting part configured to form decryption key information by adding the identifier to the decryption key, and to store the decryption key information in a first removable storage medium that is connected to the image forming apparatus.
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Abstract
An image forming apparatus is provided with a first generating part to generate an encrypted image data by subjecting an input image data to a predetermined encryption process, a second generating part to generate a decryption key that is used when decrypting the encrypted image data, wherein a different decryption key is generated every time the encrypted image data is generated, and an identifier that is uniquely determined based on the encrypted image data is generated. An outputting part is further provided to form decryption key information by adding the identifier to the decryption key, and to store the decryption key information in a removable storage medium that is connected to the image forming apparatus.
25 Citations
18 Claims
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1. An image forming apparatus comprising:
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a first generating part configured to generate an encrypted image data by subjecting an input image data to a predetermined encryption process; a second generating part configured to generate a decryption key that is used when decrypting the encrypted image data, said second generating part generating a different decryption key every time the encrypted image data is generated, and generating an identifier that is uniquely determined based on the encrypted image data; and an outputting part configured to form decryption key information by adding the identifier to the decryption key, and to store the decryption key information in a first removable storage medium that is connected to the image forming apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An image reproducing apparatus comprising:
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an input part configured to receive encrypted image data and decryption key information by reading at least the decryption key information from a removable storage medium that is connected to the image reproducing apparatus; a storage unit configured to store the decryption key information; a generating part configured to generate an identifier that is uniquely determined based on the encrypted image data; a decrypting part configured to decrypt the encrypted image data using a decryption key of the decryption key information that corresponds to the identifier and to reproduce an original image data; and an output part configured to output the original image data. - View Dependent Claims (12, 13, 14, 15)
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16. An image processing system comprising:
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an image forming apparatus comprising; a first generating part configured to generate an encrypted image data by subjecting an input image data to a predetermined encryption process; a second generating part configured to generate a decryption key that is used when decrypting the encrypted image data, said second generating part generating a different decryption key every time the encrypted image data is generated, and generating an identifier that is uniquely determined based on the encrypted image data; and an outputting part configured to form decryption key information by adding the identifier to the decryption key, and to store the decryption key information in a first removable storage medium that is connected to the image forming apparatus; and an image reproducing apparatus, connectable to the image forming apparatus via a network, comprising; an input part configured to receive the encrypted image data and the decryption key information by receiving the encrypted image data sent from the image forming apparatus and reading at least the decryption key information from the first removable storage medium that is connected to the image reproducing apparatus; a storage unit configured to store the decryption key information; a generating part configured to generate an identifier that is uniquely determined based on the encrypted image data; a decrypting part configured to decrypt the encrypted image data using a decryption key of the decryption key information that corresponds to the identifier and to reproduce an original image data; and an output part configured to output the original image data. - View Dependent Claims (17, 18)
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Specification