JP2006209713A - Variable print type seal impression and seal impression verification system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a variable print type seal impression, wherein forgery of a print of a seal is effectively prevented. <P>SOLUTION: The variable print type seal impression has an original print storage part 21 which holds image data of an original print, a fingerprint information storage part 22 which holds fingerprint information about a sealer, a fingerprint reading part 23 which reads fingerprints of the sealer, a sealer authentication part 24 which collates the fingerprints read by the fingerprint reading part 23 with the fingerprint information held in the fingerprint information storage part 22 to authenticate whether or not the sealer is legitimate, a print deformation part 25 which changes the image data of the original print held in the original print storage part 21 based on predetermined regularity when it is authenticated that the sealer is legitimate by the sealer authentication part 24 and a sealing part 28 which outputs the changed image data of the print. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a technique for preventing forgery of seals, and more particularly, to a seal stamp excellent in forgery prevention effect and a seal stamp verification system using the seal stamp.

In Japan, personal authentication is performed on a daily basis. Recently, many personal authentication systems using biometric information such as fingerprints and glows have been proposed, but it is believed that personal authentication using seals will continue to be used as the mainstream authentication method.
In recent years, personal authentication using a seal stamp has also been performed by displaying pre-registered seal data on a display and collating it with a check target stamp as computers spread. For example, Patent Document 1 discloses a seal stamp verification apparatus that accurately discriminates the essential difference between a registered seal stamp and a target seal stamp from the seal pattern without being affected by the degree of sticking of the vermilion or imprinting unevenness.
JP 2004-326821 A

However, for personal authentication using a seal, it is easy to forge a seal, and although public fraud prevention measures such as a seal certificate have been taken, there is a possibility of forgery or unauthorized acquisition of a seal certificate. It is said that there is a problem in the authenticity of the personal authentication, and the above-mentioned seal collation device cannot solve such defects of the seal.
In addition, some electronic seal stamp systems that sign or seal digital documents have measures to prevent data tampering and forgery of imprint data, but in principle, personal authentication using seal stamps is stamped on paper. Therefore, it is not possible to divert the anti-counterfeiting measures in the electronic seal stamp system as they are.
Accordingly, the present invention has been made in view of these circumstances and problems, and provides a variable seal imprint that can effectively prevent forgery of imprints mainly for seals imprinted on paper. With the goal. Another object of the present invention is to provide a highly secure seal collation system using this variable seal impression seal.

In order to achieve the above object, the variable imprint type seal according to the present invention comprises an original imprint storage unit that stores imprint data, an authenticating unit that authenticates a stamper, and when authenticated by the authenticating unit, An imprint changing means for changing the imprint data held in the original imprint storage means based on a predetermined regularity and an imprint output means for outputting the changed imprint data are provided.
With this configuration, the stamper is authenticated at the time of stamping, and an imprint with a change based on the regularity of the original imprint is created, so there is a difference in the imprint for each stamp, and forgery of the imprint is effective. Thus, a variable imprint type seal that can be prevented automatically is realized.
Here, the variable imprint type seal further includes an imprinting number counting unit that counts the number of times the variable imprint type seal has been imprinted, and the imprint changing unit is stored in the original imprint storage unit according to the number of times. The stored seal impression data may be changed, and the variable seal impression seal further includes a timing unit that measures a point in time when the authentication unit authenticates, and the seal change unit corresponds to the point in time. The imprint data held in the original imprint storage means may be changed.
As a result, it becomes possible to create an imprint with a change according to the number of times of stamping and the date and time of stamping.
A seal stamp verification system according to the present invention includes a server that stores seal stamp data for verification, and a client terminal that is communicably connected to the server and acquires and displays the seal stamp data from the server. In the collation system, the seal stamp collation system further includes an original imprint storage means for storing imprint data, an authentication means for authenticating a stamper, and the original imprint storage means when authenticated by the authentication means. A variable comprising: an imprint changing means for changing the imprint data held in the image based on a predetermined regularity; and an imprint output means for outputting the imprint data to which the change has been applied and a character string indicating the predetermined regularity. An imprint type seal is provided, and the client terminal transmits an input unit that receives input of the character string and a character string input by the input unit to the server. Communication means, wherein the server receives the character string from the client terminal, and server original imprint storage means for storing the same imprint data as the imprint data held in the original imprint storage means Based on a predetermined regularity indicated by the received character string, a change is applied by the server imprint changing means for changing the imprint data stored in the server original imprint storing means and the server imprint changing means. Transmission means for transmitting the seal impression data to the client terminal.
With this configuration, the same deformation formula as that used for variable seal stamps is also registered on the server side for checking the seal so that it can be used for verification based on the same regularity. Therefore, even if the imprint is forged, there is almost no possibility of matching with the imprint image for verification, and a seal verification system with high security can be realized.
In addition, the present invention can be realized not only as such a seal collation system, but also as a seal collation method having steps as characteristic means included in each device constituting such a seal collation system, It can also be realized as a program for causing a computer to execute these steps. Needless to say, such a program can be distributed via a recording medium such as a CD-ROM or a transmission medium such as the Internet.

As described above, according to the variable imprint type seal according to the present invention, since the imprint is changed every time the stamp is made, forgery of the imprint can be prevented.
Further, since the seal cannot be printed unless it is authenticated, it is possible to prevent the seal other than those registered as the proper owner of the seal.
Furthermore, according to the seal collation system according to the present invention, the same deformation formula as that of the seal imprint used in the variable seal impression seal is registered on the server for confirmation, and is based on the same regularity at the time of authentication. Thus, since the seal imprint image for verification is generated, the possibility of matching even if the imprint is forged becomes zero, and it is possible to realize a seal verification system with excellent security.
Therefore, according to the present invention, it is possible to efficiently prevent forgery of imprints, and it can be said that the practical value in today, where seals are still the mainstream of personal authentication, is extremely high.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a diagram showing a configuration of a variable imprint type seal stamp according to Embodiment 1 of the present invention.
The variable stamp type seal 1 according to the first embodiment is a seal that can change the stamp each time a stamp is made, and has a configuration as shown in FIG.
The seal case 10 has a rectangular parallelepiped shape or a cylindrical shape as in the case of a conventional seal stamp, and is provided with a stamping surface 19a on the surface to be stamped and a fingerprint sensor 17a for reading the fingerprint of the stamper on the side surface. It has been.
The variable stamp type seal 1 includes a power source 11 such as a dry battery or a rechargeable battery that supplies power to each part of the variable stamp type seal 1, an arithmetic device such as a CPU, a memory, and the like. And a substrate 12, a stamping device 19 that outputs a stamped image with a change to the stamping surface 19 a, and an ink supply device 18 such as an ink cartridge or an ink ribbon that supplies ink to the stamping device 19. Further, on the substrate 12, a clock 13 for measuring the date and time, a counter 14 for measuring the number of times of stamping, a storage device 16 for holding the fingerprint information of the stamper and an imprint before being changed (original imprint), A standby power supply 15 for preventing loss of information stored in the counter 14 and the storage device 16 and a fingerprint authentication device 17 for authenticating the fingerprint read by the fingerprint sensor 17a are provided.
FIG. 2 is a block diagram showing a functional configuration of the variable stamp type seal 1 according to the first embodiment.
As shown in FIG. 2, the variable stamp type seal 1 includes, as functional components, an original stamp storage unit 21, a fingerprint information storage unit 22, a fingerprint reading unit 23, a stamper authentication unit 24, a stamp modification unit 25, a seal, A number counting unit 26, a time measuring unit 27, and a stamping unit 28 are provided.
The original imprint storage unit 21 corresponds to the storage device 16 shown in FIG. 1, and is realized by a storage device such as a ROM that holds image data of the original imprint of the holder (imprinter) of the variable imprint type seal 1. Is done. The fingerprint information storage unit 22 corresponds to the storage device 16 shown in FIG. 1 and is realized by a storage device such as a ROM, and stores fingerprint information of the stamper.
The fingerprint reading unit 23 is realized by the fingerprint sensor 17 a shown in FIG. 1, reads the fingerprint of the stamper, and outputs the fingerprint information to the stamper authentication unit 24.
The stamp authenticator 24 corresponds to the fingerprint authenticator 17 shown in FIG. 1. When fingerprint information is acquired from the fingerprint reader 23, it is compared with the fingerprint information stored in the fingerprint information storage 22. Then, it is determined whether or not the inputted fingerprint information belongs to a valid stamper. When the stamper authentication unit 24 determines that the stamper is a legitimate stamper, the stamper authentication unit 24 authenticates that the variable stamp type seal can be stamped, and sends an instruction signal to each of the stamping deformation unit 25, the stamping number counting unit 26, and the timing unit 27. Output.
The stamp count counter 26 is a processing unit that is realized by the counter 14 shown in FIG. 1 and counts the stamp count of the variable stamp type seal 1. When the stamp count counter 26 acquires the instruction signal from the stamper authenticator 24, it increments the stamp count and outputs it as a part of the specific character string to the seal deforming section 25 and the stamp section 28.
The timekeeping unit 27 corresponds to the clock 13 shown in FIG. 1, and when an instruction signal is acquired from the stamper authentication unit 24, the acquired date and time (authentication date or stamping date) is displayed as the imprinting deformation unit 25 and the stamping unit 28. And output as part of the specified character string.
The imprinting deformation unit 25 is realized by a ROM that stores a program for changing the imprinting based on a predetermined regularity, a CPU that executes the program, and the like, and corresponds to the substrate 12 shown in FIG. .
Upon obtaining the instruction signal from the stamper authenticating unit 24, the stamp imprinting unit 25 reads the image data of the stamper's original imprint from the original stamp storage unit 21, changes the imprint data, and outputs it to the stamping unit 28. Here, the predetermined regularity is programmed in advance, for example, in accordance with the number of times of stamping obtained from the stamping number counting unit 26 or the authentication date and time obtained from the time counting unit 27, the change mode of the imprint, the position to be changed, and the like. Means that.
In the first embodiment, the number of times of stamping is output from the stamping number counting unit 26 as a part of the specific character string, and the authentication date and time is output as a part of the specific character string from the timing unit 27 to the seal imprinting unit 25. For this reason, the number of times of stamping and the authentication date / time are set as a specific character string, and the change mode and change position of the seal are determined according to the specific character string.
The stamping unit 28 corresponds to the stamping device 19 shown in FIG. 1, and outputs, as a seal stamp, seal data that has been changed by the stamp deforming unit 25 using, for example, the principle of a conventional ink jet printer. . Further, the stamping unit 28 outputs the stamping number obtained from the stamping number counting unit 26 and the authentication date and time obtained from the time counting unit 27 together with a seal as a specific character string. As a trigger for outputting the seal image, for example, a case where the sensor detects that the marking surface 19a shown in FIG. 1 is pressed against the object to be printed (paper) is conceivable. In addition, a switch for outputting the seal image may be provided outside the seal case 10, or the stamping surface 19 a protruding from the seal case 10 is pressed against the object to be printed so that the seal case 10 has an inside. It is also possible to adopt a configuration in which the switch is switched so as to output a seal when the seal surface 19a enters the seal case 10 so as to enter. The ink used here is preferably used in the same color as vermilion because it is output as an imprint. Further, instead of an ink jet printer mechanism, a dot impact printer mechanism or the like may be substituted.
As described above, according to the variable stamp type seal 1 according to the first embodiment, since the seal cannot be stamped unless the stamper is authenticated, the person registered as a valid owner in the variable stamp type seal 1 Sealing other than can be prevented.
Further, since a change is made in the seal impression every time a mark is made, and the number of times of stamping and the date and time of stamping are also output, it is possible to prevent easy forgery.
Note that a radio timepiece is preferably used as the timepiece in the first embodiment. This is because the radio timepiece can prevent easy date and time tampering and enhances security.
(Embodiment 2)
Subsequently, as a second embodiment of the present invention, a seal verification system using the variable stamp type seal 1 according to the first embodiment will be described.
FIG. 3 is a diagram for explaining the operation of the seal collation system according to the second embodiment.
The operating entity of the seal collation system according to the second embodiment is an unspecified number of non-authenticated persons (stampers) who are users of the variable stamp type seal stamp 1 and the variable seal stamp type seal 1 in response to a request from the authenticated person. A seal maker that manufactures and provides a certificate, and an unspecified number of certifiers who receive an application for authentication from a stamped document 20 stamped with the variable seal impression seal 1 from an authenticated person and provide services based on the authentication result ( For example, financial institutions such as banks.)
The person to be authenticated notifies personal information such as a name, which is a basis for creating a seal, to the seal maker, requests the manufacture of the variable seal stamp 1 and provides information for use in authenticating the seal.
The seal maker inputs personal information and authentication information to the seal stamp manufacturing apparatus 30 and manufactures the variable stamp type seal 1 of the person to be authenticated who is the client. In manufacturing the variable stamp type seal 1, the seal stamp manufacturing apparatus 30 assigns a unique authenticated person ID (printer ID) to each person to be authenticated and registers it in the variable stamp type seal 1 and also manufactures the authenticated person ID and the manufacture. It is also registered in the confirmation server 40 that is connected to the seal stamp manufacturing apparatus 30 so as to be associated therewith. At this time, the seal stamp manufacturing apparatus 30 also registers a program related to the change of the seal stamp stored in the ROM inside the variable stamp seal stamp 1 in the confirmation server 40 in association with the stamper ID. Here, the stamper ID registered in the variable stamp type seal 1 forms a specific character string together with the number of times of stamping and the stamp date and time, and is output together with the stamp when the variable stamp type stamp 1 is stamped.
When the person to be authenticated makes an application for authentication using the stamped document 20 stamped by the variable stamp type seal 1, the authenticator inputs a specific character string stamped on the stamped document 20 together with the stamp to the authenticator terminal 50. The server 40 for confirmation is requested to transmit the seal stamp information to be verified. The confirmation server 40 and the authenticator terminal 50 can communicate with each other via the network 100. When the confirmation server 40 receives the seal imprint information request including the specific character string, the verification server 40 uses the specific character string as a key to be verified. Is retrieved and returned to the authenticator terminal 50. The authenticator visually verifies the verification imprint displayed on the display device of the authenticator terminal 50 with the seal imprinted on the stamped document 20 to authenticate the person to be authenticated.
Although the authentication information is provided from the person to be authenticated to the seal maker here, the person to be authenticated may input the information for authentication (for example, fingerprint) at the start of use of the variable stamp type seal. .
FIG. 4 is a block diagram showing a functional configuration of each device constituting the seal collation system according to the second embodiment. Since the variable stamp type seal 1 is shown in FIG. 2, the illustration is omitted in this figure.
The seal stamp manufacturing apparatus 30 is a device that manufactures the variable stamp type seal stamp 1 and includes an information input unit 31, a stamp generation unit 32, and a communication unit 33 as shown in FIG.
The confirmation server 40 is a server device that provides seal data for collating a seal in response to a request from the authenticator terminal 50, and includes a person to be authenticated DB 41, a communication unit 42, and a seal search unit 43.
The authenticator terminal 50 is a client terminal device such as a personal computer or an ATM (Automatic Teller Machine) in a financial institution that requests the confirmation server 40 to provide image data of an imprint to be verified, and an input unit 51 and a communication unit. 52 and a display unit 53.
The information input unit 31 is an input device such as a keyboard and a mouse that receives input of personal information and authentication information of the person to be authenticated.
The imprint generation unit 32 is a processing unit that generates image data of the original imprint of the variable imprint type seal 1 based on information input from the information input unit 31. The imprint generation unit 32 executes a program for generating an imprint based on the last name, name, name, or name of the person to be authenticated input from the information input unit 31, designs the original imprint, and creates an image of the original imprint Generate data.
In addition, the seal impression generation unit 32 assigns a unique person ID (sealant ID) to each person to be authenticated, associates it with image data of the original seal, and outputs it to the communication unit 33. When assigning the sealer ID, the seal stamp generating unit 32 may have a function of requesting the confirmation server 40 to check whether a duplicate stamper ID is registered via the communication unit 33. .
Further, the seal impression generation unit 32 generates a seal stamp deformation formula based on a predetermined regularity for each person to be authenticated.
The seal stamp manufacturing apparatus 30 stores the original seal image data generated by the seal stamp generating unit 32 in the original stamp storage unit 21 of the variable stamp type seal stamp 1 or a modified formula of the seal stamp generated by the seal stamp generating unit 32. The variable imprint type seal 1 is manufactured through the process of programming the imprinting deformation section 25 of the variable imprint type stamp 1.
The communication unit 33 is an interface for communicating with the confirmation server 40, and the name and name of the person to be authenticated input via the information input unit 31 and the image data of the original seal image generated by the seal image generation unit 32. Then, the sealer ID and the modified expression of the seal are transmitted to the confirmation server 40.
The authenticated person DB 41 is a database that stores information related to the authenticated person. FIG. 5 shows a data configuration example of the person-to-be-authenticated DB. As shown in FIG. 5, the ID of the person to be authenticated, the name of the person to be authenticated, the image data of the original seal of the person to be authenticated, a program for changing the seal, and the like are recorded in the DB to be authenticated 41.
The communication unit 42 is an interface for communicating with the seal stamp manufacturing apparatus 30 and the authenticator terminal 50. The seal stamp manufacturing apparatus 30 receives the name of the person to be authenticated, the image data of the original seal image, etc. Stored, receives an imprint information request from the authenticator terminal 50, and outputs it to the imprint search unit 43.
The imprint search unit 43 is a processing unit that searches the authenticated user DB 41 based on the imprint information request received by the communication unit 42 and generates an imprint to be collated. The imprint search unit 43 derives the original imprint image data and the deformation formula of the original imprint image data from the specific character string included in the imprint information request, and uses the changed imprint image as an imprint to be collated. The seal information is generated and returned to the authenticator terminal 50 via the communication unit 42.
The input unit 51 is an input device such as a keyboard or a mouse that receives an input of a specific character string stamped on the stamped document 20 from the authenticator.
The communication unit 52 is an interface for communicating with the confirmation server 40, transmits an imprint information request including a specific character string input via the input unit 51 to the confirmation server 40, and the confirmation server The seal imprint information is received from 40 and output to the display unit 53.
The display unit 53 is a display device such as a CRT display that acquires the imprint information received by the communication unit 52 and displays and outputs the imprint to be collated. In addition, it is good also as a structure which prints out the seal stamp used as collation object instead of this display part 53. FIG.
Below, the deformation | transformation formula of the original imprint produced | generated in the imprint production | generation part 32 is demonstrated.
First, the impression generation unit 32 divides the generated original impression image data into a plurality of blocks, and assigns a block number (block No) to each block. As shown in FIG. 6A, the block dividing method and the block number assigning method may be divided into square or rectangular blocks and assigned in order from a predetermined block, or as shown in FIG. 6B. In this way, only the printed portion of the original imprint image data may be divided into irregular blocks, and block numbers may be randomly assigned.
Subsequently, the seal impression generation unit 32 determines whether or not to make a change for each assigned block No, based on a predetermined regularity, and what kind of change to add to make a change. Generate a deformation formula of the seal. The imprint generation unit 32 then programs the generated deformation formula in the imprint deformation unit 25 of the variable imprint type seal 1 and transmits it to the confirmation server 40 via the communication unit 33.
FIG. 7 shows a configuration example of a modified expression of the original impression registered in the authenticated user DB 41. This figure illustrates the case where the number of times of stamping is used as the predetermined regularity, and the modification formula (YT001) shows a change that adds a point to the block No. “A1” when the number of times of stamping is “1”. In addition, it is shown that a change to be reversed is added to the block No. “A10”.
FIG. 8 is a diagram illustrating an example of changes to be added to the block of original imprint image data.
The above-described change for adding a point is, for example, by removing a point from the printed part of the pre-deformation block 200 to form a post-deformation block 201, or by adding a dot of the same color below the printed part. A block 202 or a post-deformation block 203 may be considered by adding a point where the color scheme is inverted to the edge of the printed portion.
In addition, a change in patterning may be considered in which the printed portion of the pre-deformation block 200 is a checkered pattern as a post-deformation block 211, a vertical stripe pattern as a post-deformation block 212, or a horizontal stripe pattern as a post-deformation block 213.
Further, a reverse change in which the printed portion of the pre-deformation block 200 is reversed to form a post-deformation block 221 and a border change in which the printed portion is bordered to form a post-deformation block 231 are also conceivable. A block enclosure change in which the block 200 is further surrounded by blocks to form a post-deformation block 241 and a post-deformation block 242 is also conceivable.
Next, the procedure in which the seal stamp manufacturing apparatus 30 manufactures the variable stamp type seal stamp 1 will be described with reference to FIG.
FIG. 9 is a flowchart showing the manufacturing procedure of the variable seal stamp 1.
First, the seal stamp manufacturing apparatus 30 accepts input of information of a person to be authenticated (printer) who is a client of the variable stamp type seal stamp 1 in the information input unit 31 (S102), and is input in the seal stamp generation unit 32. The stamp ID is assigned based on the contents (S104).
Next, in the seal stamp manufacturing apparatus 30, the seal stamp generation unit 32 generates image data of the original seal stamp, that is, a seal stamp image, based on the contents of the input stamper information (S106). The generated imprint image is divided into a plurality of blocks (S108), and a block number is assigned to each block (S110). Since block division and block No. allocation have been described above, description thereof is omitted here.
Subsequently, the seal stamp manufacturing apparatus 30 generates a deformation formula of the original seal impression in the seal stamp generation unit 32 (S112), registers the image and the deformation formula of the original seal impression in the variable stamp seal stamp 1, and sets the communication unit 33. To the confirmation server 40, and registration to the authenticated user DB 41 is also performed (S114).
Finally, the seal stamp manufacturing apparatus 30 inputs the fingerprint information of the stamper for authenticating whether or not the stamp is possible to the variable stamp type seal stamp 1 (S116), and the process ends. Note that the manufacturing procedure ends in step S114, and step S116 may be input by the stamper at the start of use.
Next, the operation of the variable stamp type seal 1 manufactured by such a procedure will be described with reference to FIG.
First, the variable stamp type seal 1 accepts an input of a fingerprint from a stamper at the fingerprint reading unit 23 and performs authentication at the stamper authentication unit 24 (S202). When the stamper authenticating unit 24 verifies the input fingerprint and the fingerprint information stored in the fingerprint information storage unit 22 as a result of authentication (Yes in S204), the stamping number counting unit 26 However, the number of times of stamping is incremented, and the value is output as a part of the specific character string to the stamping deformation unit 25 and the stamping unit 28. The timing unit 27 also outputs the authentication date and time as a part of the specific character string to the seal deformation unit 25 and the seal unit 28, and the seal deformation unit 25 generates the specific character string from the value of the number of times of seal and the authentication date and time (S206). .
The imprinting deformation unit 25 determines which block of the original imprinted image is to be changed, that is, a block giving a difference based on the generated specific character string using a pre-programmed deformation formula (S208).
Finally, the seal unit 28 outputs the determined seal image as a seal, and also outputs the specific character string and the sealer ID (S210), and the operation is terminated.
When the authenticator receives the stamped document 20 stamped through such a procedure, the authenticator verifies the seal using the authenticator terminal 50. Hereinafter, an operation procedure of the seal collation system at the time of stamp collation will be described with reference to FIG.
FIG. 11 is a communication sequence diagram between the authenticator terminal 50 and the confirmation server 40 at the time of seal imprint verification.
First, the certifier terminal 50 receives input of information related to the certifier such as the name of the certifier and the purpose of authentication from the certifier via the input unit 51 (S302), and the input certifier information is transmitted to the communication unit 52. Is transmitted to the confirmation server 40 via S (S304).
Upon receiving the certifier information, the confirmation server 40 checks whether or not the certifier is a reliable certifier (S402), and returns the check result to the certifier terminal 50 (S404). As described above, the certifier check is performed by the confirmation server 40 before starting the seal collation in order to prevent unauthorized use of the seal. The certifier check may be made based on whether or not a database of certifier information is prepared on the confirmation server 40 side and registered in the database.
When the certifier terminal 50 receives a positive certifier check result, the certifier terminal 50 displays a screen for accepting input of the stamper name, the stamper ID, and the specific character string on the display unit 53, and inputs these via the input unit 51. Is received (S306). FIG. 12 shows an example of the screen. When the stamper name, the stamper ID, and the specific character string are input, the authenticator terminal 50 transmits the input information to the confirmation server 40 as an imprint information request (S308). In the screen example shown in FIG. 12, when an operation for pressing the send button is received after inputting the name of the sealer and the code (specific character string), the authenticator terminal 50 transmits a seal imprint information request to the confirmation server 40. It will be.
When the confirmation server 40 receives the seal imprint information request, the seal imprint search unit 43 retrieves the image data of the original seal imprint from the person to be authenticated D41 as a key (S406). The deformation formula of the image data is also read. Then, the confirmation server 40 adds a difference corresponding to the specific character string included in the imprint information request to the original imprint image based on the read deformation formula to generate an imprint to be collated (S408). The imprinted image is transmitted to the authenticator terminal 50 (S410).
The authenticator terminal 50 displays and outputs the received seal image on the display unit 53 (S310), and ends the communication sequence. FIG. 13 shows an example of the screen. In the screen example shown in FIG. 13, the received imprint image to be collated and the number of changes made to the imprint image are shown, and the authenticator can imprint the imprint image and the imprint imprinted on the stamp document 20. It is possible to easily determine whether or not the stamp has been pressed by visually checking.
It should be noted that the confirmation server 40 can be used in consideration of the case where a third party views the imprint image displayed on this screen so that the position and number of changes are known and the imprint image is forged as it is. A dummy change may be randomly added to at least one block in the generated imprint image. Even when a dummy change is inserted, the certifier who has the actual seal (the seal imprinted on the stamped document 20) can determine which portion is a dummy, and this causes a hindrance to verification. Therefore, a stronger anti-counterfeit effect can be obtained.
In addition, the confirmation server 40 accumulates a log of the specific character string for which an inquiry has been made, and does not generate a seal stamp to be collated for an imprint information request including the same specific character string. It is preferable to control. Such control makes it impossible to authenticate a plurality of times using the same mark, thereby realizing a seal verification system that is superior in preventing forgery. It should be noted that a plurality of authentications with the same mark are not restricted centrally, but may be operated flexibly such as enabling a plurality of authentications within a certain period (for example, only for one day). Needless to say.
It should be noted that the following mechanism may be employed when checking the seal on the confirmation server 40 side.
Upon receipt of the seal imprint information request, the confirmation server 40 transmits the corresponding original seal image to the authenticator terminal 50. The original imprint image is set so that it can be selected for each block, and the authenticator uses an input device (input unit 51) such as a mouse while looking at the imprint imprinted on the stamped document. Then, a block to which a change is added is selected from among the blocks of the imprint image displayed on the display unit 53 of the authenticator terminal.
The authenticator terminal 50 transmits the imprint image after the block is selected to the confirmation server 40, and the confirmation server 40 collates the transmitted imprint image with the imprint image to be collated.
Furthermore, the seal stamp verification system according to the second embodiment may be configured as shown in FIG.
In the configuration shown in FIG. 14, the confirmation server 60 further includes a collation unit 64 in addition to the above configuration, and the authenticator terminal 70 further includes an imprint reading unit 74 in addition to the above configuration.
The collation unit 64 is a processing unit that collates the imprint image data received from the authenticator terminal 70 with the imprint image data to be collated generated by the imprint search unit 63 using an algorithm such as pattern matching. Yes, the verification result is transmitted to the authenticator terminal 70 via the communication unit 62.
The imprint reading unit 74 reads an imprint imprinted on the stamped document 20 and converts it into a digital image, and is realized by a scanner device or the like.
FIG. 15 shows a communication sequence at the time of imprint verification between the authenticator terminal 70 and the confirmation server 60 configured as described above.
As shown in the figure, when the authenticator terminal 70 receives an input of a sealer ID or a specific character string, the authenticator terminal 70 reads the seal imprinted on the seal document 20 by the seal imprint reading unit 74 (S502). The imprint image read together with the specific character string is transmitted to the confirmation server 60 (S504).
Further, the verification server 60 collates the received imprint image with the imprint to be collated generated by the imprint search unit 63 in the collation unit 64, and transmits the collation result to the authenticator terminal 70 (S604). .
The authenticator terminal 70 displays and outputs the received verification result on the display unit 73 (S506), and ends the communication sequence.
The seal collation system according to the second embodiment can be configured as shown in FIG.
In the configuration shown in FIG. 16, the confirmation server 80 also has the configuration of the seal registration apparatus 30, and the authenticator terminal 90 includes a verification unit 95.
FIG. 17 shows a communication sequence at the time of imprint verification between the authenticator terminal 90 and the confirmation server 60 configured as described above.
As shown in this figure, the communication sequence shown in FIG. 11 is the same until the confirmation server 80 transmits a seal impression image to be verified to the certifier terminal 90.
Thereafter, the authenticator terminal 90 receives the seal image from the confirmation server 80 (may be before reception), and then reads the seal imprinted on the seal document 20 by the seal reading unit 94 (S702). The read imprint image and the received imprint image are collated (S704), and the collation result is displayed on the display unit 93 (S706).
With such a configuration of the seal collation system, it is possible to automate the collation work instead of visually checking the certifier.
Further, the seal collation system according to the second embodiment may be configured as shown in FIG.
The stamp verification system shown in FIG. 18 is different from the seal verification system shown in FIG. 4 in that the confirmation server 60a includes a verification unit 64a. 14 is different from the confirmation server 60 shown in FIG. 14 in that the communication unit 62a provided in the confirmation server 60a communicates with the communication unit 52 of the authenticator terminal 50.
FIG. 19 shows a communication sequence at the time of imprint verification between the authenticator terminal 50 and the confirmation server 60a configured as described above.
As shown in the figure, the communication sequence shown in FIG. 11 is the same until the authenticator terminal 50 accepts the input of the sealer ID and the specific character string.
Thereafter, the certifier terminal 50 outputs a screen prompting the certifier to specify the part (block) changed in the stamped seal impression via the display unit 53, and the certifier via the input unit 51. The change part designation input is received from (S802). When receiving the input of the changed portion, the authenticator terminal 50 transmits the stamper ID, the specific character string, and the changed portion to the confirmation server 60a (S804).
After that, the confirmation server 60a searches for the image data of the original seal impression as in FIG. 11 (S406), and generates the seal impression to be collated with the difference added based on the deformation formula (S408). Then, the verification server 60a collates the changed portion received via the communication unit 62a with the changed portion in the generated imprint image in the collating unit 64a (S902), and transmits the collation result to the authenticator terminal 50. (S904).
Finally, the authenticator terminal 50 displays and outputs the received collation result from the display unit 53 (S906).
By configuring the seal stamp verification system in this way, the authenticator only needs to specify the part where the change has been made, so that the operation at the time of verification can be simplified.
As described above, according to the seal collation system according to the second embodiment, the deformation formula programmed in the variable seal stamp is registered in the confirmation server, and the seal stamp for collation is performed using the specific character string as a key at the time of authentication. Since the image is generated, the possibility of matching even if collated with a forged seal is almost zero, and it is possible to realize a highly secure seal collation system.
Further, if a specific character string is used so as not to allow multiple authentications with the same imprint, the security can be further strengthened.
(Modification)
Subsequently, a modified example of the variable stamp type seal according to the first embodiment will be described.
FIG. 20 is a diagram illustrating a configuration of a modified example of the variable seal stamp.
The variable imprint type seal stamp 300 according to the present modification is common to the variable imprint type seal stamp 1 according to the first embodiment in that the imprint can be changed every time a stamp is made. However, it differs from the variable impression type seal 1 according to the first embodiment in that it has a card shape and does not have a printing device or an ink supply device.
The variable imprint type stamp 300 is different from the variable imprint type stamp 1 according to the first embodiment in that it includes a mode changeover switch 310, a display unit 318, and a data input / output terminal 319.
Below, it demonstrates focusing on these different points.
The seal case 301 has a card shape and includes a mode changeover switch 310, a fingerprint sensor 317a, and a display unit 318 on one side (front side).
The mode changeover switch 310 is a switch for turning on / off the power source of the variable imprint type seal stamp 300 and switching the operation mode (described later in detail) of the variable imprint type seal stamp 300. The mode changeover switch 310 may be a button type switch or the like in addition to the slide type switch as shown. The position where the mode changeover switch 310 is provided is not limited to the front surface of the seal case 301, and may be the back surface or the side surface.
The display device 318 is a display device such as a liquid crystal display that displays an image of an imprint that has been changed or displays a user interface screen such as an operation mode of the variable imprint type seal stamp 300. The display unit 318 preferably serves also as a touch panel type operation input interface, but may be configured so that a button for operation input is separately provided on the seal case 301. The imprint displayed by the display device 318 may be the same as the imprint imprinted by the imprinting device 19 or the like, or may be displayed in a different color. For example, the seal imprinted by the stamping device 19 or the like may be vermilion or red, and the imprint displayed on the display device 318 may be black. Further, the display device 318 may display only a block frame, a block given a change by a seal, and a specific character string as a simple display.
The data input / output terminal 319 is an interface terminal for performing data communication (input / output) with other external devices. For example, USB or IEEE1394 can be used as the interface. Here, the other external device is a device (an imprinting device) in which the ink supply device 18 and the imprinting device 19 in the variable imprint type seal 1 of the first embodiment are configured independently, an authenticator terminal, or the like. is there.
FIG. 21 is a block diagram showing a functional configuration of a variable imprint type seal stamp 300 according to this modification.
As shown in FIG. 21, the variable seal impression stamp 300 is different from the variable seal stamp 1 in that it includes a seal data output unit 328, a display unit 329, and a registration information change unit 330 as functional components. ing.
The seal imprint data output unit 328 includes a seal stamp data that has been changed by the seal stamp deforming unit 325, a stamp count obtained from the stamp count counting unit 326, an authentication date / time obtained from the timing unit 327, and a specific character string including a sealer ID Is a processing unit that outputs to the external device or the display unit 329.
The display unit 329 corresponds to the display device 318 shown in FIG. 20, and displays and outputs the seal impression data acquired from the seal stamp data output unit 328.
The registration information changing unit 330 is a processing unit that changes or deletes information recorded in the fingerprint information storage unit 322 and records new information in the fingerprint information storage unit 322. The registered information changing unit 330 is recorded in the fingerprint information storage unit 322 based on an operation from the user via the operation input interface described above when the authenticator is authenticated by the stamp authenticator 324. Change information.
The stamper authentication unit 324 determines whether the fingerprint information input by the fingerprint reading unit 323 is that of a legitimate stamper as in the case of the stamper authentication unit 24 of the first embodiment. Depending on the operation mode of the variable imprint type seal stamp 300 set by the mode changeover switch 310, the imprinting deformation unit 325 or the like is activated, or the registration information changing unit 330 is activated.
Here, the operation mode of the variable seal impression stamp 300 will be described. The operation mode includes, for example, a stamping mode and a registration information changing mode.
The seal mode is a mode for outputting seal data from the seal data output unit 328 to the display unit 329 and the seal stamp apparatus, and operates in the same manner as the procedure described in the first embodiment.
The registration information change mode is a mode in which the information recorded in the fingerprint information storage unit 322 is changed by operating the registration information change unit 330. By providing the registration information change mode, the following convenience can be obtained.
By making it possible to additionally record another fingerprint information of the stamper in the fingerprint information storage unit 322, authentication can be performed even when part of the fingerprint information of the stamper becomes unavailable due to injury or the like. Become. Here, the information recorded in the fingerprint information storage unit 322 may be a fingerprint of a different finger, or a combination of a fingerprint and other biological information such as a glow or a vein pattern.
Further, by making it possible to additionally record the fingerprint information of a plurality of stampers in the fingerprint information storage unit 322, for example, if the fingerprint information of the stamper's agent is registered, the seal can be performed by the agent. When registering the fingerprint information of the agent, first, after authenticating the stamper with the variable imprint type stamp 300, the fingerprint information of the person who will be the agent may be input within a certain time. This is to ensure security by not accepting the registration of the fingerprint information of the agent without limitation. When fingerprint information is registered as an agent, it is preferable that the fingerprint information storage unit 322 records the agent's fingerprint information so as to be identifiable by adding a flag or the like. Further, when the seal can be made by the agent, the information on the agent may be registered in the authenticated person DB of the confirmation server for the seal verification system described in the second embodiment. By registering information on the agent on the confirmation server side as well, it becomes possible to make the seal change pattern different between the stamper and the agent. Further, when the seal authenticator 324 authenticates the agent, the seal data output unit 328 displays an agent display such as (agent) in the seal data so as to clearly indicate the seal by the agent. May be added.
Further, by making it possible to additionally record the fingerprint information of a plurality of stampers in the fingerprint information storage unit 322, it is possible to prevent the stamping without a plurality of people's authentication, and who has imprinting (including a case of a plurality of people). It is possible to prove that the seal has been obtained with the approval. For example, such an application is particularly effective when the seal imprinted is a corporate seal such as a company.
An example of a data structure recorded in the fingerprint information storage unit 322 when fingerprint information of a plurality of stampers is recorded in the fingerprint information storage unit 322 is shown in FIG.
As shown in FIG. 22, in the fingerprint information storage unit 322, the sealer ID assigned to each person and the combination of each person, the name and name combination corresponding to each sealer ID, and each stamper Different seal imprinting formulas are recorded for each ID. In addition, when using a different deformation | transformation formula for every person and each person's combination as a structure of such data, about the seal | sticker collation system demonstrated in the said Embodiment 2, the same information is recorded on a to-be-authenticated person DB. It is necessary to keep it.
FIG. 23 shows a display example of the imprint displayed on the display device 318 of the variable imprint type seal 300 when the company seal is stamped based on the example of the fingerprint information storage unit 322 shown in FIG.
The imprint example 341 is an imprint when only the stamper having the stamper ID “KOH001-A” shown in FIG. When using the seal stamp verification system described in the second embodiment, the certifier inputs a specific character string displayed under the seal of the company seal into the certifier terminal and requests verification from the verification server. The person (Ichiro Yamada) who approved the seal can be known based on the information registered in the person-to-be-authenticated DB of the server.
In addition, the imprint examples 342 and 343 are imprints when only the stamper having the stamper ID “KOH001-B” or “KOH001-C” shown in FIG. 22 is stamped, and the seal stamp described in the second embodiment. Similarly, if the verification system is used, the authenticator can know who has approved the seal (Jiro Suzuki or Saburo Tanaka).
Further, the imprint examples 344 and 345 are imprints when the stamper with the stamper ID “KOH001-AB” or “KOH001-ABC” shown in FIG. 22 is stamped, and the stamp verification described in the second embodiment. Similarly, using the system, the authenticator can know who has approved the seal (a combination of Ichiro Yamada and Jiro Suzuki or a combination of Ichiro Yamada, Jiro Suzuki and Saburo Tanaka).
When fingerprint information of a plurality of stampers is recorded in the fingerprint information storage unit 322 as described above, a configuration in which different operation authority can be set for each stamper ID may be registered in the fingerprint information storage unit 322. . In such a configuration, for example, the information recorded in the fingerprint information storage unit 322 can be changed or disabled according to the job title in the company, or the order of approval of the seals can be set. It becomes like this.
Also, a plurality of original imprint data is also stored in the original imprint image storage unit 321, the relationship between the stamper ID and the original imprint data is recorded in the fingerprint information storage unit 322, and after the user performs fingerprint authentication, the imprinting is performed. It is also possible to adopt a configuration that accepts selection of an imprint to be performed.
Up to this point, the variable stamp type seal and the seal collation system according to the present invention have been described based on the respective embodiments and modifications, but the present invention is not limited to these embodiments and modifications. It goes without saying that various changes or modifications can be made within the spirit of the present invention without departing from the scope.
For example, in each of the above-described embodiments, fingerprint authentication has been described as an example of authentication of a stamper. However, authentication using a password or other authentication methods using biometric information may be used. In such a case, the fingerprint reading unit 23 in FIG. 2 is replaced with a password input receiving unit that receives password input or a biometric information acquiring unit that acquires biometric information such as glow, and the fingerprint information storage unit 22 is a password. Is replaced with a password storage unit storing biometric information or a biometric information storage unit storing biometric information.
In the second embodiment, the imprint retrieval unit derives the original imprint image data and the deformation formula of the original imprint image data from the specific character string included in the imprint information request, and adds the changed imprint image. Is generated as an imprint to be collated, the change pattern of the imprint image is recorded in the authenticated person DB, and any imprint of any imprinter is selected from the specific character string included in the imprint information request. It is also possible to extract the seal impression to be collated by analyzing whether it has been changed in.
Furthermore, in the above-described modification, the description has been given using the card-shaped variable imprint type seal, but the configuration of the variable imprint type seal according to the above-described modification is mounted on a portable terminal such as a mobile phone or a PDA (Personal Digital Assistants). Also good.

  The variable stamp type seal and seal verification system according to the present invention can be used as a seal verification system in a seal or a financial institution used for identity verification, and is particularly suitable for applications requiring a high security level. It is.

It is a figure which shows the structure of the variable stamp type seal which concerns on Embodiment 1 of this invention. It is a block diagram which shows the functional structure of the variable stamp type seal which concerns on this Embodiment 1. FIG. It is a figure for demonstrating operation | movement of the seal | sticker collation system which concerns on this Embodiment 2. FIG. It is a block diagram which shows the functional structure of each apparatus which comprises the seal stamp collation system which concerns on this Embodiment 2. FIG. It is a figure which shows the data structural example of to-be-authenticated person DB. (A) is a figure for demonstrating the division | segmentation method of a block, and the allocation method of a block number, (b) is a figure for demonstrating another division | segmentation method of a block, and another allocation method of a block number. is there. It is a figure which shows the structural example of the deformation | transformation type | formula of the original seal image registered into to-be-authenticated person DB. It is a figure which shows the example of the change added to the block of the image data of an original seal impression. It is a flowchart which shows the manufacturing procedure of a variable imprint type seal stamp. It is a flowchart which shows the operation | movement procedure of a variable stamp type seal stamp. It is a communication sequence diagram of the authenticator terminal and the server for confirmation at the time of imprint verification. It is a figure which shows the 1st example of a screen of an authenticator terminal. It is a figure which shows the 2nd example of a screen of an authenticator terminal. It is a functional block diagram which shows the 2nd structural example of the stamp collation system which concerns on this Embodiment 2. FIG. It is a communication sequence diagram of the authenticator terminal and the server for confirmation at the time of imprint collation in the case of the second configuration example. It is a functional block diagram which shows the 3rd structural example of the stamp collation system which concerns on this Embodiment 2. FIG. It is a communication sequence diagram of the authenticator terminal and the server for confirmation at the time of imprint collation in the case of the third configuration example. It is a functional block diagram which shows the 4th structural example of the stamp collation system which concerns on this Embodiment 2. FIG. FIG. 10 is a communication sequence diagram between an authenticator terminal and a confirmation server at the time of imprint collation in the case of a fourth configuration example. It is a figure which shows the structure of the variable stamp type seal stamp which concerns on the modification of this Embodiment 1. FIG. It is a block diagram which shows the functional structure of the variable stamp type seal stamp which concerns on a modification. It is a figure which shows an example of the data currently recorded on the fingerprint information storage part. It is a figure which shows the example of the stamp shown on the display apparatus of the variable stamp type seal stamp which concerns on this modification in the case of stamping a company seal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Variable imprint type seal 10, 301 Seal housing 11, 311 Power supply 12, 312 Substrate 13, 313 Clock 14, 314 Counter 15, 315 Reserve power supply 16, 316 Storage device 17, 317 Fingerprint authentication device 17a, 317a Fingerprint sensor DESCRIPTION OF SYMBOLS 18 Ink supply apparatus 19 Marking apparatus 19a Marking surface 20 Stamped document 21, 321 Original impression storage part 22, 322 Fingerprint information storage part 23, 323 Fingerprint reading part 24, 324 Stamper authentication part 25, 325 Imprint deformation part 26, 326 Sealing Number counting unit 27, 327 Time counting unit 28 Sealing unit 30 Seal making apparatus 31, 81 Information input unit 32, 82 Imprint generation unit 33, 42, 52, 62, 72, 85, 92 Communication unit 40, 60, 80 Confirmation server 41, 61, 83 User DB
43, 63, 84 Imprint search part 50, 70, 90 Certifier terminal 51, 71, 91 Input part 53, 73, 93 Display part 64, 95 Collation part 74, 94 Imprint reading part 100 Network 200 Blocks 201-242 before transformation Block after transformation 310 Mode changeover switch 318 Display device 319 Data input / output terminal 328 Imprint data output unit 329 Display unit 330 Registration information change unit 341-345 Imprint example

Claims (15)

Original impression storage means for holding the impression data;
An authentication means for authenticating the seal,
An imprint changing means for changing the imprint data held in the original imprint storage means based on a predetermined regularity when authenticated by the authenticating means;
An imprint output means for outputting imprint data with a change added thereto. The variable stamp type seal is further,
Imprinting number counting means for counting the number of times the variable imprint seal has been imprinted,
The variable imprint type seal stamp according to claim 1, wherein the imprint changing unit changes the imprint data held in the original imprint storage unit according to the number of times. The variable stamp type seal is further,
Comprising time measuring means for measuring the time point when the authentication means is authenticated,
The variable imprint type seal stamp according to claim 1 or 2, wherein the imprint changing means changes the imprint data held in the original imprint storage means in accordance with the time point. The said imprint changing means classifies the imprint data held in the original imprint storage means into a predetermined unit and changes it for each unit. Variable seal impression seal. The said imprint change means changes the said imprint data using at least one among point addition, color reversal, patterning, and bordering. The variable stamp impression seal described. The variable imprint type seal stamp according to any one of claims 1 to 5, wherein the authentication unit authenticates the stamper using a fingerprint of the stamper. The variable imprint type seal stamp according to any one of claims 1 to 6, wherein the imprint output means ejects ink to the object to be printed and outputs imprint data with a change. The imprint output means transmits the imprint data with the change to an imprinting device that ejects ink to the object to be printed and outputs the imprint data. The variable imprint type seal described in 1. The variable stamp type seal is further,
The variable imprint type seal stamp according to any one of claims 1 to 8, further comprising display means for displaying and outputting the imprint data to which the change is applied. A seal stamp verification system comprising: a server that stores seal stamp data for verification; and a client terminal that is communicably connected to the server and acquires and displays the seal stamp data from the server,
The seal verification system further includes:
Original impression storage means for storing the impression data;
An authentication means for authenticating the seal,
Imprint change means for changing the seal impression data held in the original seal impression storage means based on a predetermined regularity when authenticated by the authentication means;
A variable seal impression seal provided with a seal stamp output means for outputting the seal stamp data to which the change is applied and the character string indicating the predetermined regularity;
The client terminal is
Input means for receiving input of the character string;
Communication means for transmitting the character string input by the input means to the server,
The server
Receiving means for receiving the character string from the client terminal;
Server original impression storage means for storing the same imprint data as the imprint data held in the original impression storage means;
Server imprint changing means for changing the imprint data stored in the server original imprint storing means based on the predetermined regularity indicated by the received character string;
A seal stamp verification system, comprising: transmission means for transmitting the seal stamp data changed by the server seal stamp change means to the client terminal. The server further includes:
Log storage means for storing a character string received from the client terminal;
It is determined whether or not the received character string is the same as the character string stored in the log storage unit, and when it is determined that the character string is the same, the imprint data with the change is not transmitted. The seal verification system according to claim 10, further comprising a reuse prohibition unit that transmits a message to the client terminal. A seal verification system comprising: a server for verifying imprint data; and a client terminal that is communicably connected to the server, transmits seal impression data to the server, acquires a verification result from the server, and displays the result.
The seal verification system further includes:
Original impression storage means for holding the impression data;
An authentication means for authenticating the seal,
An imprint changing means for changing the imprint data held in the original imprint storage means based on a predetermined regularity when authenticated by the authenticating means;
A variable seal impression seal provided with a seal stamp output means for outputting the seal stamp data to which the change is applied and the character string indicating the predetermined regularity;
The client terminal is
Acquisition means for acquiring the seal impression data and the character string output by the seal impression output means;
Communication means for transmitting the imprint data and the character string acquired by the acquisition means to the server;
The server
Receiving means for receiving the seal stamp data and the character string from the client terminal;
Server original impression storage means for storing the same imprint data as the imprint data held in the original impression storage means;
Server imprint change means for changing the imprint data stored in the server original imprint storage means based on the predetermined regularity indicated by the received character string;
A seal stamp collation system comprising: collation means for collating the seal stamp data changed by the server seal stamp change section and the seal stamp data received by the reception section. A seal verification system comprising: a server for verifying imprint data; and a client terminal that is communicably connected to the server, transmits seal impression data to the server, acquires a verification result from the server, and displays the result.
The seal verification system further includes:
Original impression storage means for holding the impression data;
An authentication means for authenticating the seal,
An imprint changing means for changing the imprint data held in the original imprint storage means based on a predetermined regularity when authenticated by the authenticating means;
A variable seal impression seal provided with a seal stamp output means for outputting the seal stamp data to which the change is applied and the character string indicating the predetermined regularity;
The client terminal is
An input means for receiving an input of a changed part and the character string, which is a part where a change has been made in the seal impression data output by the seal impression output means;
Communication means for transmitting the changed portion and the character string input by the input means to the server;
The server
Receiving means for receiving the changed portion and the character string from the client terminal;
Server original impression storage means for storing the same imprint data as the imprint data held in the original impression storage means;
Server imprint change means for changing the imprint data stored in the server original imprint storage means based on the predetermined regularity indicated by the received character string;
A seal stamp collation system, comprising: a collation unit that collates a portion where the change of the seal stamp data changed by the server seal stamp change unit and the changed portion received by the reception unit are collated. A seal stamp verification method in a seal stamp verification system comprising a server that stores seal stamp data for verification, and a client terminal that is connected to the server so as to be able to communicate and obtains and displays the seal stamp data from the server,
The seal verification system further includes:
Original impression storage means for holding the impression data;
An authentication means for authenticating the seal,
An imprint changing means for changing the imprint data held in the original imprint storage means based on a predetermined regularity when authenticated by the authenticating means;
A variable seal impression seal provided with a seal impression output means for outputting the seal impression data to which the change is applied and the character string indicating the predetermined regularity;
The seal verification method is:
In the client terminal,
An input step for receiving input of the character string;
A communication step of transmitting the character string input in the input step to the server,
In the server,
A receiving step of receiving the character string from the client terminal;
A server imprint change step for changing the imprint data held by the server, the same as the imprint data held by the original imprint storage means, based on the predetermined regularity indicated by the received character string;
And a transmitting step of transmitting the imprint data changed in the server imprint changing step to the client terminal. A program for a server in a seal stamp verification system comprising: a server that stores seal stamp data for verification; and a client terminal that is communicably connected to the server and that acquires and displays the seal stamp data from the server. ,
The seal verification system further includes:
Original impression storage means for storing the impression data;
An authentication means for authenticating the seal,
Imprint change means for changing the seal impression data held in the original seal impression storage means based on a predetermined regularity when authenticated by the authentication means;
A variable imprint type seal comprising an imprint data and a seal imprint output means for outputting the character string indicating the predetermined regularity;
Receiving the character string from the client terminal;
A server imprint changing step for changing the same imprint data as the imprint data held by the server based on the predetermined regularity indicated by the received character string;
A program for causing a computer to execute a sending step of sending imprint data that has been changed in the server imprint changing step to the client terminal.