JPH10322492A - Image encryption device capable of paper copy print - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display an original image by utilizing a computer system with a prescribed control program to allow an encrypted image on a paper sheet or the like to be read by a scanner or the like and decoding the original image. SOLUTION: Encryption processing by means of image division and rearrangement is applied read image data based on data entered by a key entry section 5 such as an image ID and a password and the result is displayed on a display section 4. Then a printer driver 13 is loaded from an auxiliary storage section 2 to a main storage section 8, the encrypted image data are given to a printer, and a print section 6 prints out the data on paper or the like. Then the encrypted image data drawn on the paper are stored in the auxiliary storage section 2 by using the scanner 7 and the encryption is decoded based on the entry data used to generate the encryption for the read encrypted image data and the result is displayed on the display section 4. The series of the processing above is conducted by a control program 11 of the main storage section 8 to give a command to a central processing unit 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for encrypting digital images. The present invention relates to a system for encrypting digital images. The present invention relates to a paper-outputable image encryption apparatus that can restore an original image by reading a decrypted image into the present apparatus and performing decryption processing.

[0002]

2. Description of the Related Art In digital image encryption, digital image data is subjected to numerical processing to be encrypted. However, these methods cannot output encrypted data or encrypted images on paper or the like, or even if they can, they cannot be read into a computer with a scanner or the like, decoded, and restored to the original images.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus which can read an encrypted image, decode it by a scanner or the like, and display the original image even if the encrypted image is output on paper or the like. It is to provide.

[0004]

The present invention solves the above-mentioned problems by a computer system. The computer system is an image encryption device that can output to paper or the like, and the device includes image display means for reading and displaying image data, data input means for inputting data such as an image ID and a password, and data input means. The image data displayed on the image display unit is encrypted based on the input data, and the image data encrypted by the image encryption display unit and the image encryption display unit to be displayed again are input from the data input unit. Image decryption display means for decrypting the encrypted data based on the decrypted data and displaying the original image data again, encrypted image data recording means for recording the image data encrypted by the image encryption display means, and image encryption display means. Printing means for printing the encrypted image data on paper or the like.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system configuration diagram of a paper outputable image encryption apparatus of the present invention. FIG. 2 is a process chart of processing executed by the apparatus. FIG. 3 is a flowchart of decryption processing. FIG. 4 is a diagram of a coordinate system of the decryption processing. In FIG. 1, a control program (11) of a main storage unit (8) issues a command to a central processing unit (9) to transmit image data (14) to be encrypted from an auxiliary storage unit (2) to a main storage unit (8). ) Is read and displayed on the display unit (4). Next, data such as an image ID and a password is entered into a key input unit (5)
And a main storage unit (8) based on the input data.
The control program (11) issues a command to the central processing unit (9), performs encryption processing by image division and rearrangement shown in FIGS. 3 and 4 on the read image data, and causes the display unit (4) to display the data again. . Next, the control program (11) issues a command to the central processing unit, loads the printer driver (13) from the auxiliary storage unit (2) into the main storage unit (8), passes the encrypted image data to the printer, and (6) Output to paper or the like. This time, the encrypted image data drawn and output on the paper is recorded in the auxiliary storage unit (2) using a scanner (7), other image processing software, an input device driver, or the like. And the control program (1
1) issues a command to the central processing unit (9), and performs decryption processing of FIGS. 3 and 4 on the read encrypted image data based on the input data used to create this encryption. And display it on the display section (4). Although the image quality of the encrypted image data is not different from that of the original image data, it can be restored to the original form by decoding after being printed and captured by a scanner, but the image quality is inferior.

[0006]

As described above, even if image data encrypted by the paper output decryptable image encryption apparatus of the present invention is output to paper or the like, if the image data is read into a computer by a scanner or the like and decrypted, the original data can be obtained. Image data. Of course, it can also be recorded on a computer, and there is no problem in security even if it is transmitted and received by e-mail such as personal computer communication or the Internet, as long as the encrypted image ID and password are not known.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram according to an embodiment of a paper outputable image encryption apparatus of the present invention.

FIG. 2 is a process chart of the above.

FIG. 3 is a flowchart of an encryption process and a decryption process according to the first embodiment;

FIG. 4 is a diagram of a coordinate system for encryption processing and decryption processing.

Claims (1)

[Claims] 1. An image encryption device capable of outputting to paper or the like, comprising: an image display means for reading and displaying image data; a data input means for inputting data such as an image ID and a password; Encrypts the image data displayed on the image display means based on the data,
Image encryption display means to be redisplayed, image decryption display means for decrypting the image data encrypted by the image encryption display means based on the data input from the data input means and returning to the original image data for display, A paper output-capable image encryption system comprising: an encrypted image data recording unit for recording image data encrypted by the image encryption display unit; and a printing unit for printing the image data encrypted by the image encryption display unit on paper or the like. Device.