TW202217652A - Device for acquiring digital stamp information and method for verifying digistal stamp information - Google Patents

Abstract

A digital stamp information acquiring device adapted to scan a physical stamp and a method for verifying digital stamp information. The physical stamp has an end portion which includes a stamp information. The stamp information includes undulation feature, surface texture feature and character feature. The device includes a case and a control module, a light source and an optical scanning module disposed in the case. The case has a top plate with a transparent window. When the end portion of the physical stamp is appropriately disposed on the transparent window, the control module will send out a control signal. The light source is coupled to the control module and emits light with a working wavelength toward the transparent window according to the control signal. The optical scanning module is coupled to the control module and scans the transparent window according to the control signal to capture the stamp information.

Description

Digital seal information capture device and digital seal information verification method

This case is about a digital seal information acquisition device and a seal verification method.

When opening an account at the counter, the bank operator will ask the customer to sign or use the seal, and the bank will retain the customer's signature style or the image of the seal as the seal image. In the future, when the customer comes to the counter for financial transactions, the bank operator will require the customer to use a seal in a specific field of the transaction receipt, and compare the image of the seal currently provided by the customer with the image of the seal retained by the customer at the bank. , when the comparison results are the same, the bank operator will release the financial transaction.

However, this comparison method is performed through the naked eye, so it is prone to misjudgment. Furthermore, the current seals are automatically engraved by the engraving machine according to certain types of fonts, such as regular script, official script, cursive script, small seal script and so on. Therefore, if a third person intends to copy, as long as they see or photograph the seal image, they can easily use the engraving machine to copy the seal that is nearly identical to the seal image.

Therefore, the traditional seal verification procedure has the problems of easy identification errors and easy counterfeiting of the seal image.

In view of this, the present invention provides a device for capturing digital signature information for scanning a physical signature. The physical seal has one end, and the end has seal information, and the seal information includes at least two of concave-convex features, surface texture features and character features. The digital signature information capture device includes a casing, a control module, a light source and an optical scanning module arranged in the casing. The casing includes a top plate, and the top plate has a transparent window. When the end of the physical seal is located in the transparent window, the control module sends a control signal. The light source is coupled to the control module and emits light with a working wavelength toward the transparent window according to the control signal. The optical scanning module is coupled to the control module and scans the transparent window according to the control signal to capture the signature information of the physical signature.

In some embodiments, the digital signature information capture device further includes a storage module coupled to the optical scanning module for storing the signature information captured by the optical scanner.

In some embodiments, the control module of the digital signature information capturing device further includes a processor for comparing the captured signature information with the existing signature information stored in the storage module.

In some embodiments, the above-mentioned digital signature information capture device further includes a sensor disposed in the casing and coupled to the control module, and the sensor is used for sensing whether the end of the physical signature is located in the transparent window.

In some embodiments, the above-mentioned digital signature information capture device further includes a light signal module disposed on the casing and coupled to the optical scanning module. When the optical scanning module is in the first operating state, the light signal module The first light signal is displayed, and the light signal module displays the second light signal when the optical scanning module is in a second operating state.

In some embodiments, the above-mentioned digital signature information capture device further includes a sound effect module disposed in the casing and coupled to the optical scanning module. When the optical scanning module is in the first operating state, the sound effect module emits For the first sound effect, when the optical scanning module is in the second operating state, the sound effect module emits a second sound effect.

In some embodiments, the above-mentioned digital signature information capture device further includes a positioning member disposed on the top plate and located at the periphery of the transparent window.

In some embodiments, the transparent window of the digital signature information capturing device corresponds to an optical scanning module.

In some embodiments, the concave-convex features of the above-mentioned seal information are related to the depth of the notch of the characters engraved on the end of the physical seal, and the surface texture features are related to the surface color, stripes or roughness of the end of the physical seal. The feature is associated with the outline of the text imprinted on the end of the physical seal.

In some embodiments, the above-mentioned character features are more related to the sharpness of the outline of the characters engraved on the end of the physical seal.

In some embodiments, the above-mentioned digital signature information capture device further includes a communication module disposed in the casing and coupled to the control module.

The present invention also provides a method for verifying digital signature information, which includes the following steps. The end of a physical seal is scanned to extract one of the to-be-verified seal information of the end of the physical seal, the to-be-verified seal information includes at least two of concave-convex features, surface texture features and character features. One of the existing seal information stored in a database is read, and the existing seal information also includes at least two of concave and convex features, surface texture features and character features corresponding to the seal information to be verified. Compare the seal information to be verified with the existing seal information. When the to-be-verified seal information matches the existing seal information, a verification pass message is sent. When the to-be-verified seal information does not match the existing seal information, a verification message is sent. Authentication failed message.

In some embodiments, the above-mentioned digital signature information verification method further includes detecting whether the end of the physical signature is completely within a scanning area before the step of scanning the end of the physical signature.

In some embodiments, in the step of scanning the end of the physical seal, the above-mentioned digital signature information verification method further includes displaying a first light signal during the scanning process, and displaying a second light signal after the scanning is completed.

In some embodiments, in the step of scanning the end of the physical seal, the above-mentioned digital signature information verification method further includes emitting a first sound effect during the scanning process, and emitting a second sound effect after the scanning is completed.

In some embodiments, the digital signature information verification method compares whether the signature information to be verified is consistent with the existing signature information by the processor of the digital signature information retrieval device.

In some embodiments, the digital signature information verification method is to scan the end of the physical signature with the digital signature information capturing device and capture the signature information to be verified at the end of the physical signature, and send the pending signature through the communication module. The verification signature information is sent to a remote server, and the remote server compares the verification signature information with the existing signature information.

In some embodiments, the concave-convex feature described in the above-mentioned digital seal information verification method is related to the depth of the notch of the characters engraved on the end of the physical seal, and the surface texture features are related to the surface color and stripe of the end of the physical seal. or roughness, the character features are associated with the outline of the text imprinted on the end of the physical seal.

In some embodiments, the character features described in the above-mentioned digital signature information verification method are further related to the sharpness of the outline of the characters engraved on the end of the physical signature.

1 to 4 are a schematic diagram, a schematic diagram of a module, a three-dimensional view of a physical signature, and a schematic diagram of the end of the first embodiment of the digital signature information capture device of the present invention, respectively, which illustrate the extraction of digital signature information for scanning the physical signature 9 Take device 100. The physical seal 9 has one end 91, and the end 91 has seal information, and the seal information includes at least two of concave-convex features, surface texture features and character features. The texture feature and the character feature are taken as an example for description. As shown in Figure 3 and Figure 4, the so-called concave-convex feature is equivalent to the depth of the notch of the text "Wang Yi Er"; the surface texture feature is equivalent to the surface color, stripe or roughness and other features formed by the material of the physical seal 9; The character features are equivalent to the outline of the character "Wang Yi Er" on the end 91 of the physical seal 9, including the sharpness of the engraving.

The digital signature information capture device 100 includes a casing 110 , a control module 120 , a light source 190 and an optical scanning module 130 disposed in the casing 110 . The casing 110 includes a top plate 111 , and the top plate 111 has a transparent window 112 . The transparent window 112 corresponds to the position of the optical scanning module 130 . Ideally, the top plate 111 can be very thin, so that the transparent window 112 is directly close to the optical scanning module 130 . When the end 91 of the physical seal 9 abuts against and is attached to the transparent window 112 , the control module 120 will send a control signal. The control signal emits light (eg, infrared rays) with a working wavelength toward the transparent window 112 . The optical scanning module 130 is coupled to the control module 120 and can control the light of the working wavelength to scan the transparent window 112 according to the control signal sent by the control module 120 to capture the seal information of the end 91 of the physical seal 9 . The control module 120 may include a processor.

Through the digital seal information capturing device 100 , the physical seal 9 can no longer only present character features through ink pad ink, but can further carry surface texture features and three-dimensional concave-convex features. In particular, when the user makes the physical seal 9, due to factors such as the material of the physical seal 9 itself, the model and age of the machine to be engraved, and the technology of the engraver, the depth, sharpness and texture of the notch cannot be completely copied. .

For example, on the market, the materials used as the base of physical seals are different, such as wood, jade, ivory, etc., and based on the laws of physics, the reflection coefficients presented by different materials of seals will also be different. Obtains grayscale intensity information unique to the physical seal material. As shown in FIG. 17 and FIG. 18 , when the reflection coefficient of the material of the physical seal 9 is weak, the character 92A will have a darker gray scale value as shown in FIG. 17 , and when the reflection coefficient of the material of the physical seal 9 is strong , the character 92B will have a lighter grayscale value as shown in FIG. 18 . Therefore, if the stealer counterfeits the same font type, the verification will fail because the material of the seal is different from the existing data information, which can greatly improve the verification accuracy. Even stamps of the same material, such as wood stamps, have different textures from different batches and cuts of wood. In addition, under the analysis of the digital signature information capturing apparatus 100 of the present invention, different wood textures (eg, bifurcations, breakpoints, etc.) reflect different grayscale intensities. In other words, even if the physical seals are all made of wood, the characteristic points of the surface textures presented will be different, as shown in the character 92C in FIG. 19 and the character 92D in FIG. 20 .

In addition, the grayscale intensity of the concave portion of the physical seal 9 will vary depending on the depth of the dent, so that the unique three-dimensional grayscale intensity information of the physical seal 9 can be obtained, as shown in Figure 21 The dent 93A is shown as the dent 93B of FIG. 22 . Traditional seal identification can only identify flat fonts, and it is unavoidable to prevent people with intentions from stealing font images to counterfeit seals. Having the three-dimensional information of the seals can greatly improve the authenticity of the seals representing the parties.

In addition, traditionally, the physical seal 9 is directly printed on the paper with ink pad, and various impurities may appear during the printing process. Even if the obtained plane image is scanned and imaged afterwards, the impurities and the real words cannot be ideally distinguished. However, the digital signature information capture device 100 of the present invention directly scans the body of the end 91 of the physical signature 9, and can capture various data information at the same time as the physical characteristics of impurities and the signature body are different to filter out impurities. Relatively special data, and then filter out impurities, get closer to the real seal information, and avoid the occurrence of secondary distortion.

Since the extracted seal information is not only character features (character outline and edge sharpness), but also concave-convex features and surface texture features, unless the user's physical seal 9 is stolen, a third party with bad intentions It is difficult to create a physical seal 9 that has exactly the same seal information as the user's physical seal 9 . The bank side only needs to scan the signature information of the user's physical signature 9 through the digital signature information capture device 100 of the present invention and store it in the server. When the user has financial transaction needs in the future and needs to identify the authenticity of the signature, the bank side only needs to scan it again. Once the seal information of the user's physical seal 9 is compared with the seal information stored in the server, there is no need to use ink pad ink at all, which saves the trouble of cleaning the physical seal 9, and also allows the user's physical seal. 9 can be applied to non-over-the-counter online transactions.

Referring to FIG. 5 and FIG. 6 , which are a schematic diagram and a block diagram of a second embodiment of the digital signature information capture device of the present invention, respectively, which illustrate the digital signature information capture device 200 for scanning the physical signature 9 . The digital signature information capturing device 200 further includes a storage module 140 coupled to the optical scanning module 130 for storing signature information captured by the optical scanning module 130 .

Referring to FIG. 7 and FIG. 8 , which are a schematic diagram and a block diagram of a third embodiment of the digital signature information capturing apparatus according to the present invention, respectively, they illustrate the digital signature information capturing apparatus 300 for scanning the physical signature 9 . Compared with the first embodiment, the digital signature information capture device 300 further includes a sensor 150 disposed in the casing 110 and coupled to the control module 120 , and the sensor 150 is used for sensing the physical signature 9 Whether the end 91 is located in the transparent window 112 . When the sensor 150 senses that the end 91 of the physical seal 9 is located in the transparent window 112, the sensor 150 will send a sensing signal, and the control module 120 will send a control signal according to the sensing signal to control the light source 190 emits light with a working wavelength toward the transparent window 112 , and controls the optical scanning module 130 to scan the transparent window 112 to capture the seal information of the end 91 of the physical seal 9 .

Referring to FIG. 9 and FIG. 10 , which are a schematic diagram and a block diagram of a fourth embodiment of the digital signature information capturing apparatus according to the present invention, respectively, they illustrate the digital signature information capturing apparatus 400 for scanning the physical signature 9 . Compared with the second embodiment, the digital signature information capturing apparatus 400 further includes a light signal module 160 disposed on the casing 110 and coupled to the optical scanning module 130 . When the optical scanning module 130 is in a first operating state (eg, working state), the light signal module 160 will display a first light signal (eg, a red light signal), and when the optical scanning module 130 is in a second operating state (eg, a red light signal) inactive state), the light signal module 160 will display a second light signal (eg, a green light signal).

Referring to FIG. 11 and FIG. 12 , which are a schematic diagram and a block diagram of a fifth embodiment of the digital signature information capturing apparatus according to the present invention, respectively, they illustrate a digital signature information capturing apparatus 500 for scanning the physical signature 9 . Compared with the fourth embodiment, the digital signature information capturing apparatus 500 further includes a sound effect module 170 disposed in the casing 110 and coupled to the optical scanning module 130 . When the optical scanning module 130 is in the first operating state (eg, working state), the sound effect module 170 can emit a first sound effect, and when the optical scanning module 130 is in the second operating state (eg, the resting state), the sound effect module 170 can Play a second sound.

13 and 14 , which are a schematic diagram and a block diagram of a sixth embodiment of the digital signature information capture device of the present creation, respectively, which illustrate a digital signature information capture device 600 for scanning the physical signature 9 . Compared with the fifth embodiment, the digital signature information capturing apparatus 600 further includes a communication module 180 disposed in the casing 110 and coupled to the control module 120 for sending the captured signature information to a remote server. The remote server may be a server or database located at the bank end, and is used for saving and keeping the user's signature information. The communication module 180 is, for example, a wireless network communication module, a wired network communication module, or a Bluetooth module.

Referring to FIG. 15 , it is a schematic diagram of a seventh embodiment of the apparatus for capturing digital signature information according to the present invention, which illustrates a digital signature information capturing apparatus 700 for scanning the physical signature 9 . Compared with the sixth embodiment, the digital signature information capturing device 700 further includes a positioning member 113 disposed on the top plate 111 and located at the periphery of the transparent window 112 . By abutting the end 91 of the physical seal 9 against the positioning member 113 , the user can correctly place the physical seal 9 on the transparent window 112 to ensure that the digital seal information capturing device 700 can accurately capture the information of the physical seal 9 . Seal information for end 91.

Referring to FIG. 16 , it is a schematic flow chart of the digital signature information verification method of the present invention. When the user goes to the bank's business location to conduct over-the-counter transactions, the bank counter staff can ask the user to provide the physical seal 9, and then place the physical seal 9 on the above-mentioned digital seal information capture device and scan the end 91 of the physical seal 9 (step S1 ) ). During the scanning process, the digital signature information capture device will capture at least two of the concave-convex feature, the surface texture feature and the character feature of the end 91 of the physical signature 9, and use at least two of the above three features as the signature information to be verified ( Step S2). Next, the bank-side server will read the bank-side database, and extract one of the existing seal information stored on the bank side by the user. The existing seal information also includes the concave-convex features, surface texture features and characters corresponding to the seal information to be verified. feature (step S3) at least two. Next, the bank server will compare whether the signature information to be verified is consistent with the existing signature information (step S4). Of course, the more features of the signature information compared, the more accurate the signature identification. When the seal information to be verified does not match the existing seal information, the bank-side server sends a verification failure message (step S5), and when the to-be-verified seal information matches the existing seal information, the bank-side server sends a verification pass message (step S5). S6). In some embodiments, the above steps S4, S5 and S6 may also be performed by a digital signature information capturing device, for example, the control module 120 may include a processor for comparing the captured signature information with the storage module Existing seal information of group 140.

In addition to over-the-counter transactions, the digital signature information verification method of the present invention can also be applied to online transactions. When a user logs in to the bank's online banking through a local personal computer, smart phone or tablet and other devices and tries to execute an online transaction, the bank server can first detect whether the local user has captured the digital signature information to the device Interconnect with PC, smartphone or tablet. If not, the local user is prompted to install the digital signature information capture device. Next, the remote server prompts the local user to place the physical signature 9 on the digital signature information retrieving device. Next, it is detected whether the end portion 91 of the physical signature 9 is completely located in a scanning area, and the scanning area here is equivalent to the transparent window 112 of the above-mentioned digital signature information capturing device. When it is confirmed that the end 91 of the physical seal 9 is completely within the scanning area, the scanning of the end 91 of the physical seal 9 starts (step S1 ). During the scanning process, the digital signature information capture device will capture at least two of the concave-convex feature, the surface texture feature and the character feature of the end 91 of the physical signature 9, and use at least two of the above three features as the signature information to be verified ( Step S2). Next, the bank-side server will read the bank-side database, and extract one of the existing seal information stored on the bank side by the user. The existing seal information also includes the concave-convex features, surface texture features and characters corresponding to the seal information to be verified. feature at least two (step S3). Next, the bank server will compare whether the signature information to be verified is consistent with the existing signature information (step S4). Of course, the more features of the signature information compared, the more accurate the signature identification. When the seal information to be verified does not match the existing seal information, the bank server sends a verification failure message (step S5) and rejects the execution of the online transaction. When the to-be-verified seal information matches the existing seal information, the bank server The server sends a verification pass message (step S6) to the local user's personal computer, smart phone or tablet, and accepts the execution of the online transaction.

In some embodiments, the above step S6 may further send a prompt message to the local user's personal computer, smart phone or tablet, prompting the user to re-place the end 91 of the physical seal 9 in the scanning area, and confirm that the user is correct After relocating the physical seal 9, the above steps S1-S4 are performed again.

In some embodiments, the above-mentioned step S1 may also display a first light signal through the digital signature information capture device during the scanning process, and display a second light signal through the digital signature information capture device after scanning. In this way, the user can easily know whether the scanning of the signature information has been completed and whether the physical signature 9 can be removed from the digital signature information capturing device through the light signal.

In some embodiments, the above-mentioned step S1 may also emit a first sound effect through the digital signature information capturing device during the scanning process, and emit a second sound effect through the digital signature information capturing device after the scanning is completed. In this way, the user can easily know whether the scanning of the signature information has been completed and whether the physical signature 9 can be removed from the digital signature information capturing device through the sound effect.

To sum up the above, the present invention provides an accurate verification seal information technology, improves the seal identification degree, and avoids the occurrence of false positives in which the forgery engraving is still passed the verification. In addition, the present invention can achieve a completely paperless operation process and avoid physical seals. The process of printing on the paper is not accurate, resulting in the lack of clear sampling marks, impurities and secondary distortion.

Although the present invention has been disclosed above by embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some modifications and changes without departing from the spirit and scope of the present disclosure.

100: Digital signature information capture device 110: Shell 111: Top plate 112: Transparent window 113: Positioning pieces 120: Control Module 130: Optical scanning module 140: Storage Module 150: Sensor 160: light module 170: Sound module 180: Communication module 190: light source 200: Digital seal information capture device 300: Digital signature information capture device 400: Digital signature information capture device 500: Digital Signature Information Capture Device 600: Digital signature information capture device 700: Digital signature information capture device 9: Physical seal 91: End 92A: Character 92B: character 92C: character 92D: Character 93A: Dent 93B: Dent S1~S6: Steps

[FIG. 1] is a schematic diagram of the first embodiment of the digital signature information capture device of the present invention. [FIG. 2] is a schematic block diagram of the first embodiment of the digital signature information capture device of the present invention. [Figure 3] is a perspective view of the physical seal. [Figure 4] is a schematic diagram of the end of the physical seal. FIG. 5 is a schematic diagram of the second embodiment of the digital signature information capture device of the present invention. FIG. 6 is a schematic block diagram of the second embodiment of the digital signature information capture device of the present invention. FIG. 7 is a schematic diagram of the third embodiment of the digital signature information capture device of the present invention. FIG. 8 is a schematic block diagram of a third embodiment of the apparatus for capturing digital signature information according to the present invention. FIG. 9 is a schematic diagram of the fourth embodiment of the digital signature information capture device of the present invention. FIG. 10 is a block diagram of the fourth embodiment of the digital signature information capture device of the present invention. 11 is a schematic diagram of the fifth embodiment of the digital signature information capture device of the present invention. FIG. 12 is a block diagram of the fifth embodiment of the digital signature information capture device of the present invention. FIG. 13 is a schematic diagram of the sixth embodiment of the digital signature information capture device of the present invention. 14 is a schematic block diagram of the sixth embodiment of the digital signature information capture device of the present invention. 15 is a schematic diagram of a seventh embodiment of the digital signature information capture device of the present invention. 16 is a schematic flow chart of the method for verifying digital signature information of the present invention. [FIG. 17] It is a schematic diagram (1) of the grayscale difference of character features of the present invention. [FIG. 18] It is a schematic diagram (2) of the grayscale difference of character features of the present invention. [Fig. 19] is a schematic diagram (1) of the grayscale difference of surface texture features of the present invention. [Fig. 20] is a schematic diagram (2) of the gray scale difference of the surface texture feature of the present invention. [Fig. 21] is a schematic diagram (1) of the gray scale difference of the concave-convex feature of the present invention. [Fig. 22] is a schematic diagram (2) of the gray scale difference of the concave-convex feature of the present invention.

S1~S6: Steps

Claims (19)

A digital seal information capture device for scanning a physical seal, the physical seal has one end, the end has a seal information, the seal information includes at least two of a concave-convex feature, a surface texture feature and a character feature , the digital signature information retrieval device includes: a casing, including a top plate, the top plate has a transparent window; a control module arranged in the casing, when the end of the physical seal is arranged on the transparent window, the control module sends a control signal; a light source, disposed in the casing and coupled to the control module, emits light with a working wavelength toward the transparent window according to the control signal; and An optical scanning module is disposed in the casing and coupled to the control module, and scans the transparent window with the light of the working wavelength according to the control signal to capture the signature information. The device for capturing digital signature information according to claim 1, further comprising a storage module coupled to the optical scanning module for storing the signature information captured by the optical scanning module. The device for capturing digital signature information as claimed in claim 2, wherein the control module further comprises a processor for comparing the captured signature information with an existing signature information stored in the storage module. The digital signature information capture device as claimed in claim 2, further comprising a sensor disposed on the casing and coupled to the control module, the sensor being used for sensing whether the end of the physical signature is attached fit the transparent window. The device for capturing digital signature information as claimed in claim 4, further comprising a light signal module disposed on the housing and coupled to the optical scanning module, when the optical scanning module is in a first operating state When the light signal module displays a first light signal, when the optical scanning module is in a second operating state, the light signal module displays a second light signal. The device for capturing digital signature information according to claim 4, further comprising a sound effect module disposed in the housing and coupled to the optical scanning module, when the optical scanning module is in a first operating state The sound effect module emits a first sound effect, and when the optical scanning module is in a second operating state, the sound effect module emits a second sound effect. The device for capturing digital signature information as claimed in claim 1, further comprising a positioning member disposed on the top plate and at the periphery of the transparent window. The device for capturing digital signature information according to claim 1, wherein the transparent window corresponds to the optical scanning module. The device for capturing digital signature information as claimed in claim 1, wherein the concave-convex feature of the signature information is associated with the depth of the notch of the characters engraved on the end of the physical signature, and the surface texture feature is associated with the entity The surface color, stripe or roughness of the end of the seal, and the character feature is associated with the outline of the text engraved on the end of the physical seal. The device for capturing digital signature information as claimed in claim 9, wherein the character feature is further related to the sharpness of the outline of the character engraved on the end of the physical signature. The device for capturing digital signature information according to any one of claims 1 to 10, further comprising a communication module disposed in the casing and coupled to the control module. A method for verifying digital signature information, comprising: scanning an end of a physical seal; Retrieve the seal information to be verified at the end of the physical seal, the to-be-verified seal information includes at least two of a concave-convex feature, a surface texture feature and a character feature; reading an existing seal information stored in a database, the existing seal information including at least two of a concave-convex feature, a surface texture feature and a character feature corresponding to the to-be-verified seal information; and Compare whether the to-be-verified seal information is consistent with the existing seal information, wherein, when the to-be-verified seal information is consistent with the existing seal information, a verification pass message is sent, and when the to-be-verified seal information does not match the existing seal information , an authentication failure message is issued. The method for verifying digital seal information as described in claim 12, before the step of scanning the end of the physical seal, further comprising: Detect whether the end of the physical seal is completely within a scanning area. The method for verifying digital seal information as described in claim 12, in the step of scanning the end of the physical seal, further comprising: A first light signal is displayed during the scanning process, and a second light signal is displayed after the scanning is completed. The method for verifying digital seal information as described in claim 12, in the step of scanning the end of the physical seal, further comprising: A first sound effect is emitted during the scanning process, and a second sound effect is emitted after the scanning is completed. The method for verifying digital signature information according to claim 12, wherein the processor of the digital signature information retrieving device according to claim 3 compares whether the signature information to be verified matches the existing signature information. The method for verifying digital signature information as claimed in claim 12, wherein the digital signature information capturing device as claimed in claim 11 scans the end of the physical signature and captures the to-be-verified end of the physical signature The seal information is sent to a remote server through the communication module, and the remote server compares the to-be-verified seal information with the existing seal information. The method for verifying digital signature information according to any one of claims 12 to 17, wherein the concave-convex feature is related to the notch depth of the characters engraved on the end of the physical signature, and the surface texture feature is associated with the The surface color, stripe or roughness of the end of the physical seal, and the character feature is associated with the outline of the text engraved on the end of the physical seal. The method for verifying digital seal information as claimed in claim 18, wherein the character feature is further related to the sharpness of the outline of the text engraved on the end of the physical seal.

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