Method of videotext information encryption and security transmission in a network6961428Abstract A technique of enciphering the graph-text document and its security transfer on a network. The sender of the graph-text document enciphers at least one graph-text document with digitizing algorithm provided by a control center and producing an enciphered and compressed cryptic document. Sender sends this enciphered cryptic document to a recipient, who prints out the enciphered graph-text document. The control center sends the positioning parameters of a reader sheet, the coordinates of the pole and the polar angle, to the recipient, who puts the reader sheet onto the document sheet at the right position and right orientation as indicated by the parameters received. The original document thus is revealed as a four dimensional (four parametric) document and is ready to be read. Claims 1. A technique of enciphering a graph-text document and its security transfer on network, wherein said technique comprises the following steps: Description TECHNICAL FIELD OF THE INVENTION
With different reader covers on the same enciphered document sheet, different four dimensional images can be revealed. According to the present invention, the steps of another method for enciphering the graph-text document and transferring on the network is as follows:
With different reader covers on the same enciphered document sheet, different four dimensional images can be revealed. The advantages of the present invention are as follows: It is possible to make full use of existing facilities, such as wired or wireless public communication networks, optical fiber communication networks, the Internet, communication satellites, and mobile or microwave communication networks, to facilitate the security transfer of the enciphered graph-text information. Graph-text information is kept secret until it arrives at the final recipient. Documents are easy to deliver, to preserve, and to read. Due to the use of four dimensional (4 parametric) digital enciphering, the technique is provided with the feature of multi-combination, uniqueness, arbitrariness and it seems that the retrograde action is impossible. The technique can be used in many different fields such as trading, customs, taxation, credit cards, etc. BRIEF DESCRIPTION OF THE DRAWINGS The following explains the invention with reference to the drawings. FIG. 1 is a block diagram of procedure for graph-text enciphering according to an embodiment of the present invention. FIG. 2 is a schematic diagram of the sending, transferring and receiving of the document according to the procedure. FIG. 3 is a schematic diagram for showing relative positioning of the reader sheet with respect to the document sheet. FIG. 4 is a schematic diagram of an array of the miniaturized lenses in a gridding arrangement on a reader. FIG. 5 is a schematic diagram of an array of the miniaturized lenses in step-shaped arrangement on the reader. FIG. 6 is a schematic diagram of an array of the miniaturized lenses in a wavelike pattern arrangement on the reader. FIG. 7 is a schematic diagram of an array of the miniaturized lenses in special shaped arrangement on the reader. FIG. 8 is a schematic diagram of the network between the general control center and other control centers. DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIGS. 1, 2, and 3, one of the techniques for graph-text enciphering and transfer on network is: When there is some random communication between sender 7 and recipient 8 and the graph-text document 2 needs to be enciphered for transfer, the sender first has to apply for certain special digital code rule 3 from control center 1. Control center 1 sends the digital code rule 3 to the sender 7. Using the special digital code rule 3, sender 7 enciphers and compresses at least one graph-text document 2 to produce a cryptic digital graph-text document 4 and transfer it to recipient 8 or to a designated network address via the network 6, and sends an acknowledgment to control center 1 at the same time. After receiving the acknowledgment from the sender 7, the control center sends a corresponding number of the digital graph-text document for readers 5 to the recipient 8 or to the designated network address via the network 6. The cryptic graph-text document 4 will be printed out on the cryptic document sheet 9 using a printer or digital facsimile machine by recipient 8, and digital graph-text documents for readers 5 would also be printed out on transparent or translucent sheets to form the same number of readers 10. There are only dot groups on the document sheet 9 and the readers 10, and the graph-text documents are illegible. In order to view the images, recipient 8 has to request positioning parameters, the coordinate of the pole O and the polar angle θ, from the control center. As shown in FIG. 3, the control center 1 sends the coordinate of the pole O and the polar angle θ to the recipient 8. The recipient 8 then covers the reader sheet 10 onto the document sheet 9 according to the parameters receiving from the control center 1, and the original document 2 is revealed from the cryptic graph-text documents sent by sender 7. With other readers 10 covering onto the same enciphered document sheet 9, other original document 2 within cryptic digital graph-text documents for reader 4 can also be read. Another technique of graph-text enciphering and its security transfer on network can also be seen in the FIGS. 1, 2 and 3. That is: When there are frequent communications between sender 7 and recipient 8 and the graph-text document 2 needs to be enciphered for transfer, sender 7 first has to apply for a certain special digital code rule 3 from control center 1. Control center 1 sends the special digital code rule 3 to sender 7. With the special digital code rule, sender 7 enciphers and compresses at least one graph-text document 2 producing cryptic graph-text document 4 and transfers it to recipient 8 via the network 6. The recipient 8 then prints the cryptic graph-text document on the document sheet 9 by the use of a printer or digital facsimile machine. There are only dot groups on the document sheet 9 and the readers 10 which are prepared beforehand, and the graph-text documents are all illegible. Recipient 8 has to request the positioning parameters, the coordinates of the pole O and the polar angle θ, from the control center 1. As shown in FIG. 3, the control center 1 sends the positioning parameters, the coordinates of the pole O and the polar angle θ, to the recipient 8 and the recipient 8 covers the reader 10 onto the cryptic document sheet 9 according to the parameters received, so that the cryptic graph-text document 4 which was transferred by the sender 7 is then revealed as the original document 2 and is ready to be read. With other readers 10 covering onto the same document sheet 9, successively different original documents 2 within cryptic graph-text document 4 can also be read respectively. If transfer is done through a public network, the cryptic graph-text document can be transferred alone, or together with a digital graph-text document for the reader. Both of them can be sent to the same network address or to different ones. If transfer is through the Internet they can be sent to a designated network address or virtual network address. Each address can be locked out with several locks, and any related recipient who has joined "unlocking key assembly" through the network and has been authorized to have an unlocking key for getting a reader of certain class will be able to read the cryptic document of corresponding class on the network, thus realizing the point-to-point security transfer. This technique can be applied to the security transfer of graph-text document on wired or wireless communication network. As shown in FIGS. 4, 5, 6, and 7, the reader 10 is composed of many miniaturized lenses 11 with special focal lengths. These lenses 11 are made of convexes or holes or the combination of convexes and holes. The arrangement of lenses 11 can be in gridded or in step-shaped or in wavelike patterns or with special combination. As shown in FIG. 7, the special combination arrangement of lenses is arranged with lenses of different sizes, shapes, directions and spacings and with the miniaturized change of these parameters, the different combinations of lenses can form different readers. For convenience of use, several different readers can be combined into one reader. If the sender 7 communicates with the recipient 8 frequently, the recipient 8 can have several readers 10 with the serial number beforehand and keep them for long-time use. The reader 10 can be a rigid card or a flexible one and is made by typed or printed transparencies, or made by printing, photo etching, biting in, or heat pressing of transparent plastic sheets. Thus, the sender can only send the enciphered digital graph-text document to the recipient 8 and the recipient prints it out and reads it out by covering the specific reader 10 with the serial number which is designated by control center 1, which is kept in the recipient place beforehand, onto the document sheet in the right position and polar angle. While the reader is away from or out of the right position of the document sheet, the document is cryptic again. Worked in this way, the sender needs no longer transfer the information of readers with the document through the network and the recipient can keep the readers at all time for regular use. As shown in FIG. 8, many sub-control centers 1 are set at address A, B, C, D, E . . . under the general control center 12. Each sub-control center 1 has its own terminal user, the senders 7 and the recipients 8, working the way described in the present invention. The general control center 12 and the sub-control centers 1 in different addresses, together with all terminal user of the senders 7 and recipients 8, form a network of security graph-text transfer.
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