Paper file anti-counterfeiting system, method and device

Abstract

The invention provides a paper file anti-counterfeiting system, method and device, and belongs to the technical field of radio frequency identification. The system comprises a content abstract processing module used for generating content abstracts of all pages of a paper file; the invisible code jet printing module is used for mapping the content abstract of each page of the paper file into an invisible code and jet printing the invisible code in a specified area of each page of the paper file; and the RFID write-in module is used for writing the content abstract of each page of the paper file into the embedded RFID of the paper file. According to the embodiment of the invention, the strong coupling design of'page content-invisible code-RFID 'is introduced, so that the attacks that the RFID is removed, replaced or pasted to a forged document and the like are prevented, and the anti-counterfeiting effect of the paper document is improved.

Description

Technical Field

[0001] This invention relates to the field of radio frequency identification technology, specifically to a paper document anti-counterfeiting system, a paper document anti-counterfeiting method, a paper document anti-counterfeiting device, a machine-readable storage medium, and a computer program product. Background Technology

[0002] In anti-counterfeiting applications that combine Radio Frequency Identification (RFID) with paper documents, existing technologies mainly involve applying non-embedded UHF RFID tags to paper documents such as certificates, vouchers, and test reports in the form of stickers or cards, and performing anti-counterfeiting verification by reading the unique ID in the chip.

[0003] However, the current organization structure of anti-counterfeiting information is often static. The RFID chip only stores a fixed UID or a written summary information. This makes the RFID chip very easy to remove, replace or paste onto counterfeit documents. When the anti-counterfeiting system reads the tag, it may still return a "verification passed" result. In other words, the anti-counterfeiting effect of non-embedded UHF RFID tags on paper documents is not good. Summary of the Invention

[0004] The purpose of this invention is to provide a paper document anti-counterfeiting system, a paper document anti-counterfeiting method, a paper document anti-counterfeiting device, a machine-readable storage medium, and a computer program product to solve the problem of poor anti-counterfeiting effect of non-embedded UHF RFID tags for paper document anti-counterfeiting.

[0005] To achieve the above objectives, embodiments of the present invention provide a paper document anti-counterfeiting system, comprising: The content summarization module is used to generate content summaries for all pages of paper documents. The invisible code printing module is used to map the content summary of each page of the paper document into an invisible code, and to print the invisible code in a designated area of ​​each page of the paper document. An RFID writing module is used to write the content summary of each page of the paper document into the embedded RFID tag of the paper document.

[0006] Optionally, the system further includes: an encryption module, used to generate a specified key for each page of the paper document, and to encrypt the content digest of each page based on the specified key of each page to obtain the ciphertext digest of all pages; The step of mapping the content summary of each page of the paper document to an invisible code and printing the invisible code in a designated area of ​​each page of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; mapping the ciphertext of the summary of each page of the paper document to an invisible code; and printing the invisible code in a designated area of ​​each page. The step of writing the content summary of each page of the paper document into the embedded RFID of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; and writing the ciphertext of the summary of each page of the paper document into the embedded RFID of the paper document.

[0007] Optionally, the content summary of each page of the paper document includes a paper document identifier and / or a page identifier.

[0008] Optionally, the RFID writing module is also used to splice the content summaries of all pages in a preset order to obtain the full-text summary of the paper document.

[0009] Optionally, the system further includes: The invisible code recognition module is used to recognize the invisible codes on all pages of the paper document and obtain the invisible code recognition results for all pages of the paper document; the invisible code recognition results include content digest recognition results or digest ciphertext recognition results; The RFID reading module is used to read data from the embedded RFID to obtain the content summary reading result or the summary encrypted reading result of all pages of the paper document. The anti-counterfeiting comparison module is used to compare the content summary recognition result of the first page with the content summary reading result of the first page, or to compare the summary encrypted text recognition result of the first page with the summary encrypted text reading result of the first page. If the comparison results are different, it is determined that the first page has been tampered with; wherein the first page is any page among all pages of the paper document.

[0010] Optionally, the RFID reading module is also used to read data from the embedded RFID to obtain a full-text summary of the paper document; The anti-counterfeiting comparison module is also used to compare the content summary recognition results of all pages of the paper document with the full text summary of the paper document. If the comparison results of any page are different, it is determined that the paper document has been tampered with.

[0011] On the other hand, embodiments of the present invention also provide a paper document anti-counterfeiting method, applied to the aforementioned paper document anti-counterfeiting system, the method comprising: Generate a summary of the contents of all pages of the paper document; Map the content summary of each page of the paper document to an invisible code, and print the invisible code in a designated area of ​​each page of the paper document; The content summary of each page of the paper document is written into the embedded RFID tag of the paper document.

[0012] Optionally, after generating a summary of all pages of the paper document, the document may further include: Generate a specified key for each page of the paper document, and encrypt the content digest of each page based on the specified key to obtain the ciphertext digest of all pages; The step of mapping the content summary of each page of the paper document to an invisible code and printing the invisible code in a designated area of ​​each page of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; mapping the ciphertext of the summary of each page of the paper document to an invisible code; and printing the invisible code in a designated area of ​​each page. The step of writing the content summary of each page of the paper document into the embedded RFID of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; and writing the ciphertext of the summary of each page of the paper document into the embedded RFID of the paper document.

[0013] Optionally, the content summary of each page of the paper document includes a paper document identifier and / or a page identifier.

[0014] Optionally, the method further includes: splicing the content summaries of all pages in a preset order to obtain the full-text summary of the paper document.

[0015] Optionally, the method further includes: Identify the hidden codes on all pages of the paper document to obtain the hidden code identification results for all pages of the paper document; the hidden code identification results include content summary identification results or summary ciphertext identification results; Data is read from the embedded RFID to obtain the content summary reading result or the summary ciphertext reading result of all pages of the paper document; The content summary recognition result of the first page is compared with the content summary reading result of the first page, or the summary ciphertext recognition result of the first page is compared with the summary ciphertext reading result of the first page. If the comparison results are different, it is determined that the first page has been tampered with; wherein the first page is any page among all pages of the paper document.

[0016] Optionally, the method further includes: Data is read from the embedded RFID to obtain a full-text summary of the paper document; The content summary recognition results of all pages of the paper document are compared with the full text summary of the paper document. If the comparison results of any page are different, it is determined that the paper document has been tampered with.

[0017] On the other hand, embodiments of the present invention also provide a paper document anti-counterfeiting device, comprising: The content summarization processing unit is used to generate a content summary of all pages of a paper document; An invisible code printing unit is used to map the content summary of each page of the paper document into an invisible code, and to print the invisible code in a designated area of ​​each page of the paper document. An RFID writing unit is used to write the content summary of each page of the paper document into the embedded RFID tag of the paper document.

[0018] On the other hand, the present invention also provides a machine-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described paper document anti-counterfeiting method.

[0019] On the other hand, the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the above-mentioned anti-counterfeiting method for paper documents.

[0020] Through the above technical solution, this invention calculates a content digest for each page of a paper document, uses this content digest to generate a hidden code, and then writes it into an embedded RFID tag, implementing a dual encryption binding mechanism based on the hidden code and the embedded RFID tag. By introducing a strong coupling design of "page content-hidden code-RFID" into the paper document anti-counterfeiting system, attacks such as the removal, replacement, or pasting of RFID tags into counterfeit documents are prevented, thus improving the anti-counterfeiting effect of paper documents.

[0021] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is one of the structural schematic diagrams of the anti-counterfeiting system for paper documents provided by the present invention; Figure 2This is the second flowchart of the paper document anti-counterfeiting system provided by the present invention; Figure 3 This is a flowchart illustrating the anti-counterfeiting method for paper documents provided by the present invention; Figure 4 This is a schematic diagram of the embedded RFID structure provided by the present invention; Figure 5 This is a schematic diagram of the anti-counterfeiting device for paper documents provided by the present invention. Detailed Implementation

[0023] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0024] Please refer to Figure 1 This invention provides a paper document anti-counterfeiting system, including: a content summary processing module 10, an invisible code printing module 20, and an RFID writing module 30.

[0025] The content summarization processing module 10 is used to generate content summaries for all pages of a paper document. In one embodiment, the paper document is a type of paper document requiring anti-counterfeiting measures, such as certificates, vouchers, test reports, etc. The content summarization processing module 10 can generate content summaries for all pages of the paper document through an image acquisition device and a processor. For example, the image acquisition device first acquires images of the content of all pages of the paper document. Then, the processor identifies each page of the paper document using optical character recognition (OCR) methods, and then generates a content summary D_i for each page of the paper document using various message digest algorithms (e.g., MD5, SHA1, SHA256). The content summary D_i for each page of the paper document is a 256-bit fixed-length digest, representing a unique fingerprint of the page content.

[0026] It should be noted that before generating the content summary D_i, to ensure the accuracy of the generated content summary, the content of each page of the identified paper document can undergo structured preprocessing. For example, during the data generation stage, the content summary processing module 10 performs structured preprocessing on the text content of each page of the report. This process includes character standardization (such as full-width to half-width conversion), typesetting noise reduction, punctuation normalization, and other operations to ensure consistent processing results for the same content across different terminals.

[0027] The invisible code printing module 20 is used to map the content summary of each page of the paper document into an invisible code, and to print the invisible code into a designated area of ​​each page of the paper document. The invisible code printing module 20 can collaboratively use a processor and a printing device to print the invisible code into a designated area of ​​each page of the paper document. For example, the processor can map the content summary of each page of the paper document into an invisible dot matrix code, and after bitmap conversion and error correction encoding, print it onto a designated area (e.g., the lower left or lower right corner) of each page (paper surface) of the paper document, serving as a content watermark that is invisible to the reader but readable by an infrared recognition device. For example, the invisible code printing module 20 can map the content summary of the first page of the paper document into an invisible dot matrix code, and after bitmap conversion and error correction encoding, print the invisible dot matrix code onto the lower left corner of the first page (paper surface) of the paper document. In other embodiments, the invisible dot matrix code can also be replaced by invisible codes that achieve anti-counterfeiting, traceability, and information hiding, such as photochemically treated invisible codes or invisible ink printed invisible codes.

[0028] The RFID writing module 30 is used to write the content summary of each page of the paper document into the embedded RFID tag of the paper document. The processor writes the content summary of each page of the paper document into the user data area of ​​the RFID chip, while encapsulating additional information (such as summary signature, generation timestamp, and organization ID), forming a two-way mapping relationship with the hidden code. The embedded RFID tag can be the SCR402 model, featuring a user area (storing the encrypted digest), a key area (protecting the K_master), and an access control mechanism. The embedded RFID tag supports hardware acceleration of national cryptographic standards SM1 / SM7 / SM3, enabling high-strength encryption / decryption and anti-copying protection under authorized terminal access. Each access requires PSAM card authentication, and page-level encrypted data can only be retrieved under a secure channel, further preventing offline cracking and unauthorized read / write.

[0029] This invention achieves a triple binding between content digital features, physical tags, and report structure through a "paper-invisible code-RFID chip" system. All summary information is generated from the actual content of the paper document, making it unpredictable and unforgeable; all printed content is presented invisibly to prevent copying and reproduction; and each chip in the embedded RFID corresponds to a unique page, preventing removal and reuse. This invention not only achieves refined anti-counterfeiting capabilities with "every page verifiable," but also provides a natural foundation for highly reliable digital document archiving. Compared to traditional RFID anti-counterfeiting or invisible coding schemes, it possesses significant technical advantages in terms of linkage, security, and closed-loop system, forming a complete and scalable paper-based anti-counterfeiting platform architecture. In subsequent verification steps, only if the page content summary obtained from decoding the invisible code matches the page content summary in the embedded RFID chip is the page considered authentic; otherwise, the content or structure can be determined to have been tampered with.

[0030] This invention calculates a content digest for each page of a paper document and uses this digest to generate a hidden code, which is then written into an embedded RFID tag. This executes a dual encryption binding mechanism based on the hidden code and the embedded RFID tag. By introducing a strong coupling design of "page content-hidden code-RFID" into the paper document anti-counterfeiting system, attacks such as the removal, replacement, or pasting of RFID tags into counterfeit documents are prevented, thus improving the anti-counterfeiting effect of paper documents.

[0031] For other aspects of the embodiments of the present invention, please refer to Figure 2 The system further includes: an encryption module 40, used to generate a specified key for each page of the paper document, and to encrypt the content digest of each page based on the specified key to obtain ciphertext digests of all pages. The step of mapping the content digest of each page of the paper document to an invisible code, and printing the invisible code in a specified area of ​​each page of the paper document, includes: determining the ciphertext digest corresponding to the content digest of each page of the paper document; mapping the ciphertext digest of each page of the paper document to an invisible code, and printing the invisible code in a specified area of ​​each page; the step of writing the content digest of each page of the paper document into the embedded RFID of the paper document includes: determining the ciphertext digest corresponding to the content digest of each page of the paper document; and writing the ciphertext digest of each page of the paper document into the embedded RFID of the paper document.

[0032] To prevent the leakage of page summaries in paper documents via invisible codes and embedded RFID, embodiments of the present invention can also generate a designated key for each page of the paper document, and encrypt the content summary of each page based on the designated key to obtain the ciphertext of the summaries for all pages. In one embodiment, the encryption module 40 can generate a unique key K_page_i for each page of the paper document using the master key K_master and the SM7 dispersion algorithm. That is, the SM7 dispersion algorithm disperses the master key K_master to generate a unique key K_page_i for each page of the paper document. Then, the content summary D_i of each page of the paper document is encrypted using the page-level key K_page_i to obtain the ciphertext C_i of the summaries for each page of the paper document. The ciphertext C_i is the core data of the anti-counterfeiting system, possessing page specificity and content uniqueness. The invisible code printing module 20 maps the ciphertext of the summaries for each page of the paper document into an invisible dot matrix code, which, after bitmap conversion and error correction encoding, is printed onto the lower right corner of the paper as a content watermark that is invisible to the reader but can be read by an infrared recognition device. The RFID writing module 30 writes the ciphertext of the summary of each page of the paper document into the user data area of ​​the embedded RFID chip, and at the same time encapsulates additional information (such as summary signature, generation timestamp, organization ID, etc.) to form a two-way mapping relationship with the invisible code.

[0033] By encrypting the content summary of each page of a paper document into a ciphertext summary, and then sending the ciphertext summary of each page of the paper document to the invisible code printing module 20 and the RFID writing module 30, the invisible code printed by the invisible code printing module 20 and the page summary ciphertext stored by the RFID writing module 30 are thus obtained. This embodiment of the invention prevents the leakage of page summaries of paper documents in the invisible code and embedded RFID, further improving the anti-counterfeiting effect of paper documents.

[0034] In other aspects of the embodiments of the present invention, the content summary of each page of the paper document includes a paper document identifier and / or a page identifier. The paper document identifier can be a unique identifier for the paper document; for example, when the paper document is a test report, the paper document identifier can be the "ReportID" of the test report. When the paper document is a certificate, the paper document identifier can be the certificate number of the certificate. The page identifier can be the page number, annotations, or other information of the paper document. The content summary of each page of the paper document can include any one of the paper document identifier and the page identifier. To introduce contextual factors representing the current page into the content summary of each page of the paper document as much as possible, in one embodiment, the content summary of each page of the paper document includes both the paper document identifier and the page identifier. For example, when the paper document is a test report, the content summary of each page of the paper document includes the test report number and page number. By introducing the paper document identifier and the page identifier into the content summary of each page of the paper document, the paper document identifier and the page identifier are strongly associated and strongly bound to the content summary of each page of the paper document. Even if the same content is copied and pasted into different reports, the anti-counterfeiting verification will fail because the paper document identifier and page identifier change. In this embodiment of the invention, the content summary of each page of the paper document includes a paper document identifier and / or a page identifier. This avoids the security risks associated with copying and pasting the same content into different reports and further improves the anti-counterfeiting effect of the paper document.

[0035] For other aspects of the embodiments of the present invention, please refer to Figure 2 The system also includes: a hidden code recognition module 50, an RFID reading module 60, and an anti-counterfeiting comparison module 70 for verifying the authenticity of paper documents.

[0036] The stealth code recognition module 50 is used to recognize the stealth codes on all pages of the paper document, obtaining the stealth code recognition results for all pages of the paper document. Specifically, the stealth code recognition module 50 can use an infrared recognition terminal to recognize the stealth codes on all pages of the paper document, obtaining the stealth code recognition results for all pages of the paper document. In embodiments excluding the encryption module 40, the stealth code recognition module 50 recognizes the stealth codes on all pages of the paper document, obtaining the content digest recognition results for all pages of the paper document. In embodiments including the encryption module 40, the stealth code recognition module 50 recognizes the stealth codes on all pages of the paper document, obtaining the digest encrypted text recognition results for all pages of the paper document.

[0037] The RFID reading module 60 is used to read data from the embedded RFID to obtain a summary reading result or a ciphertext reading result for all pages of the paper document. In one embodiment, the RFID reading module 60 can read data from the embedded RFID via an RFID reader to obtain a summary reading result or a ciphertext reading result for all pages of the paper document. In embodiments without the encryption module 40, the RFID reader reads data from the embedded RFID to obtain a summary reading result for all pages of the paper document. In embodiments including the encryption module 40, the RFID reader reads data from the embedded RFID to obtain a ciphertext reading result for all pages of the paper document.

[0038] The anti-counterfeiting comparison module 70 is used to compare the content summary recognition result of the first page with the content summary reading result of the first page, or to compare the summary encrypted text recognition result of the first page with the summary encrypted text reading result of the first page. If the comparison results are different, it is determined that the first page has been tampered with; wherein the first page is any one of all pages of the paper document.

[0039] In embodiments excluding the encryption module 40, the anti-counterfeiting comparison module 70 performs single-page verification as follows: On an on-site verification device, an infrared recognition terminal scans the hidden code on a single page of the paper document, decodes it to obtain the content summary recognition result, and simultaneously obtains the content summary reading result from the embedded RFID chip through an RFID reader. If both match, the page is considered authentic; otherwise, it can be determined that the content or structure has been tampered with. In embodiments including the encryption module 40, the anti-counterfeiting comparison module 70 performs single-page verification as follows: On an on-site verification device, an infrared recognition terminal scans the hidden code on a single page of the paper document, decodes it to obtain the content summary reading result, and simultaneously obtains the summary encrypted text reading result from the embedded RFID chip through an RFID reader. If both match, the page is considered authentic; otherwise, it can be determined that the content or structure has been tampered with. Thus, this embodiment of the invention enables each page of the paper document to be verifiable.

[0040] In other aspects of this invention, the RFID writing module 30 is further configured to concatenate the content summaries of all pages according to a preset order to obtain the full-text summary of the paper document. This invention also designs a report-level master signature structure. After the report is generated, the content summaries of all pages are concatenated sequentially according to page number order to form a content hash chain of the entire test report, i.e., the full-text summary of the paper document. In one embodiment, the full-text summary of the paper document is as follows: Digest_book=SHA256(D_1||D_2||…||D_n). Where D_1, D_2, and D_n represent the content summaries of each page of the paper document, and Digest_book represents the full-text summary of the paper document. Digest_book can be encrypted using the SM7 algorithm and written to the secure area of ​​the embedded RFID chip located on the cover of the paper document, serving as an unalterable "master fingerprint" for the entire test report. During the verification stage, the summary can be compared by random page selection, recalculation of the entire document, etc., to confirm the integrity and originality of the report.

[0041] In other aspects of this invention, the RFID reading module 60 is further configured to read data from the embedded RFID to obtain a full-text summary of the paper document. The anti-counterfeiting comparison module 70 is further configured to compare the content summary recognition results of all pages of the paper document with the full-text summary of the paper document; if the comparison results for any page differ, it is determined that the paper document has been tampered with.

[0042] This invention allows the use of an RFID reader to read the full-text digest (Digest_book) embedded in the RFID tag on the cover of a paper document. By comparing the content summary recognition results of all pages of the paper document with the full-text digest (Digest_book), if the comparison results for any page differ, it is determined that the paper document has been tampered with. For example, if the comparison results differ, there may be page number tampering, page additions or deletions, or content reorganization. All such instances can be identified by comparing the content summary recognition results of all pages of the paper document with the full-text digest (Digest_book).

[0043] The paper document anti-counterfeiting system of this invention incorporates anti-counterfeiting verification logic at both the data and physical layers, constructing a closed-loop process from report generation, label binding, content printing, label writing to on-site identification and backend verification. The specific process is as follows: Production stage: At the report generation stage, the backend system automatically calculates the content summary and encrypts the key for each page, and completes invisible code printing and embedded RFID writing during the printing synchronization stage. The system records the binding relationship of each page and forms a log. Distribution phase: Once the paper is bound, it enters the delivery process. Each report has a unique code, traceability, and cover verification data. Verification stage: The terminal uses an infrared recognition terminal to capture the invisible code on the content page, decodes it to obtain encrypted digest information, and at the same time reads the user area data of the cover chip through an ultra-high frequency embedded RFID reader. Backend comparison stage: The decrypted content of the invisible code is compared with the embedded RFID data. If the match is successful, the verification is passed; if the content is tampered with, the tag is replaced, or the page position is changed, any mismatch will trigger failure. Audit traceability phase: Verification actions and results are recorded in the server database, which can be used by the competent authority for auditing, tracing, and statistics.

[0044] Through the above process, any attempt to replace a page of content, copy a hidden code pattern, simulate RFID chip data, or transplant an entire tag into a counterfeit document can be identified and intercepted by the system, effectively blocking the counterfeiting chain.

[0045] Overall, the "paper-code-chip" system of this invention achieves a triple binding between content digital features, physical tags, and report structure. Its core features are: 1. All summary information is generated from actual content and cannot be predicted or forged; 2. All encryption operations are based on national cryptographic hardware algorithms to prevent key leakage; 3. All printed content is presented invisibly to prevent photocopying and duplication; 4. All embedded RFID content corresponds one-to-one with a unique page and cannot be removed and reused; 5. All reports have their own summary chain, supporting full-book verification.

[0046] The "paper-code-core" dual-factor anti-counterfeiting system proposed in this invention is an anti-counterfeiting architecture for test report paper that integrates radio frequency identification technology, digital encryption algorithms, and physical carrier anti-tampering mechanisms. Without altering the usage habits and printing process of paper reports, this invention achieves full lifecycle reliability assurance of reports—"every page verifiable, the entire report searchable, and tamper-proof"—through algorithm-level content binding and the non-portability of the embedded structure. Thus, embodiments of this invention improve the anti-counterfeiting effect of paper documents.

[0047] On the other hand, please refer to Figure 3 This invention also provides a paper document anti-counterfeiting method, applied to the aforementioned paper document anti-counterfeiting system, the method comprising: Step 100: Generate a summary of the contents of all pages of the paper document.

[0048] The content digest processing module acquires images of the content of all pages of the generated paper document. The processor then identifies these images as the content of each page of the paper document using optical character recognition (OCR). Finally, various message digest algorithms (e.g., MD5, SHA1, SHA256) are used to generate a content digest D_i for each page of the paper document. The content digest D_i for each page of the paper document is a 256-bit fixed-length digest, representing a unique fingerprint of the page's content.

[0049] Step 200: Map the content summary of each page of the paper document to an invisible code, and print the invisible code in a designated area of ​​each page of the paper document.

[0050] For example, the content summary of each page of a paper document can be mapped into an invisible dot matrix code through the invisible code printing module. After bitmap conversion and error correction encoding, the invisible code is printed onto a designated area (such as the lower left or lower right corner) of each page (paper surface) of the paper document through the invisible code printing module, serving as a content watermark that is invisible to the reader but can be read by an infrared recognition device.

[0051] Step 300: Write the content summary of each page of the paper document into the embedded RFID tag of the paper document.

[0052] The RFID writing module writes the content summary of each page of the paper document into the user data area of ​​the RFID chip, and encapsulates additional information (such as summary signature, generation timestamp, affiliated organization ID, etc.) to form a two-way mapping relationship with the invisible code.

[0053] This invention achieves a triple binding between content digital features, physical tags, and report structure through a "paper-invisible code-RFID chip" system. All summary information is generated from the actual content of the paper document, making it unpredictable and unforgeable; all printed content is presented invisibly to prevent copying and reproduction; and each chip in the embedded RFID corresponds to a unique page, preventing removal and reuse. This invention not only achieves refined anti-counterfeiting capabilities with "every page verifiable," but also provides a natural foundation for highly reliable digital document archiving. Compared to traditional RFID anti-counterfeiting or invisible coding schemes, it possesses significant technical advantages in terms of linkage, security, and closed-loop system, forming a complete and scalable paper-based anti-counterfeiting platform architecture. In subsequent verification steps, only if the page content summary obtained from decoding the invisible code matches the page content summary in the embedded RFID chip is the page considered authentic; otherwise, the content or structure can be determined to have been tampered with.

[0054] In other aspects of the embodiments of the present invention, after generating the content digest of all pages of the paper document, the method further includes: generating a specified key for each page of the paper document, and encrypting the content digest of each page based on the specified key of each page to obtain the ciphertext of the digest of all pages; mapping the content digest of each page of the paper document to an invisible code, and printing the invisible code in a specified area of ​​each page of the paper document, includes: determining the ciphertext of the digest corresponding to the content digest of each page of the paper document; mapping the ciphertext of the digest of each page of the paper document to an invisible code, and printing the invisible code in a specified area of ​​each page; writing the content digest of each page of the paper document into the embedded RFID of the paper document, includes: determining the ciphertext of the digest corresponding to the content digest of each page of the paper document; and writing the ciphertext of the digest of each page of the paper document into the embedded RFID of the paper document.

[0055] To prevent the leakage of page summaries in paper documents using hidden codes and embedded RFID, embodiments of this invention can also generate a designated key for each page of the paper document, and encrypt the content summary of each page based on the designated key, obtaining the ciphertext of the summaries for all pages. In one embodiment, the encryption module can generate a unique key K_page_i for each page of the paper document using a master key K_master and the SM7 dispersion algorithm. That is, the SM7 dispersion algorithm disperses the master key K_master to generate a unique key K_page_i for each page of the paper document. Then, the content summary D_i of each page of the paper document is encrypted using the page-level key K_page_i, obtaining the ciphertext C_i of the summaries for each page of the paper document. The ciphertext C_i is the core data of the anti-counterfeiting system, possessing page specificity and content uniqueness. Compared with existing technologies that use publicly available symmetric encryption algorithms (such as AES) or only use UID matching as a verification mechanism, this invention uses the SM7 algorithm, which conforms to national commercial cryptography standards, to encrypt the content summary and structure data. At the same time, it constructs a hierarchical key system, generating derived keys at the page level for encryption operations, and the key storage and transmission process is fully controlled. This not only enhances the system's resistance to attacks but also meets domestic compliance requirements for information system encryption standards.

[0056] The invisible code printing module maps the encrypted summary of each page of the paper document into an invisible dot matrix code. After bitmap conversion and error correction encoding, it is printed onto the lower right corner of the paper as a content watermark that is invisible to the reader but can be read by infrared identification devices. The RFID writing module writes the encrypted summary of each page of the paper document into the user data area of ​​the embedded RFID chip, while encapsulating additional information (such as summary signature, generation timestamp, and affiliated organization ID), forming a two-way mapping relationship with the invisible code.

[0057] By encrypting the content summary of each page of a paper document into a ciphertext summary, and then sending the ciphertext summary of each page to the invisible code printing module and the RFID writing module, the invisible code printed by the invisible code printing module and the page summary ciphertext stored by the RFID writing module are thus protected against leakage of the page summary of the paper document. This embodiment of the invention prevents the leakage of the page summary of the paper document in the invisible code and embedded RFID, further improving the anti-counterfeiting effect of the paper document.

[0058] In other aspects of the embodiments of the present invention, the content summary of each page of the paper document includes a paper document identifier and / or a page identifier.

[0059] The paper document identifier can be a unique identifier for the paper document. For example, if the paper document is a test report, the paper document identifier can be the "ReportID" of the test report. If the paper document is a certificate, the paper document identifier can be the certificate number. The page identifier can be the page number, annotations, or other information of the paper document. The content summary of each page of the paper document can include any one of the paper document identifier and the page identifier. To introduce contextual factors representing the current page into the content summary of each page of the paper document as much as possible, in one embodiment, the content summary of each page of the paper document includes both the paper document identifier and the page identifier. For example, if the paper document is a test report, the content summary of each page of the paper document includes the test report number and page number. By introducing the paper document identifier and the page identifier into the content summary of each page of the paper document, a strong association is established between the paper document identifier and the page identifier and the content summary of each page of the paper document. Even if the same content as the test report is copied and pasted into different reports, the anti-counterfeiting verification will fail because the paper document identifier and page identifier of the page change at this time. In this embodiment of the invention, the content summary of each page of the paper document includes a paper document identifier and / or a page identifier. This avoids the security risks associated with "copying and pasting the same content into different reports" and further enhances the anti-counterfeiting effect of the paper document.

[0060] In other aspects of the embodiments of the present invention, the method further includes: identifying the invisible code of all pages of the paper document to obtain the invisible code identification result of all pages of the paper document; the invisible code identification result includes a content summary identification result or a summary ciphertext identification result; reading data from the embedded RFID to obtain a content summary reading result or a summary ciphertext reading result of all pages of the paper document; comparing the content summary identification result of the first page with the content summary reading result of the first page, or comparing the summary ciphertext identification result of the first page with the summary ciphertext reading result of the first page, and determining that the first page has been tampered with if the comparison result is different; wherein the first page is any one of the pages of the paper document.

[0061] The stealth code recognition module can use an infrared recognition terminal to identify the stealth codes on all pages of a paper document, obtaining the stealth code recognition result for all pages of the paper document. In embodiments without an encryption module, the stealth code recognition module identifies the stealth codes on all pages of the paper document, obtaining the content summary recognition result for all pages of the paper document. Data is read from the embedded RFID using an RFID reader to obtain the content summary reading result for all pages of the paper document. In embodiments including an encryption module, the stealth code recognition module identifies the stealth codes on all pages of the paper document, obtaining the encrypted summary recognition result for all pages of the paper document. Data is read from the embedded RFID using an RFID reader to obtain the encrypted summary reading result for all pages of the paper document.

[0062] In embodiments excluding the encryption module, the anti-counterfeiting comparison module performs single-page verification as follows: On an on-site verification device, an infrared recognition terminal scans the hidden code on a single page of the paper document, decodes it to obtain the content summary recognition result, and simultaneously obtains the content summary reading result from the embedded RFID chip through an RFID reader. If both match, the page is considered authentic; otherwise, it can be determined that the content or structure has been tampered with. In embodiments including the encryption module, the anti-counterfeiting comparison module performs single-page verification as follows: On an on-site verification device, an infrared recognition terminal scans the hidden code on a single page of the paper document, decodes it to obtain the content summary reading result, and simultaneously obtains the summary encrypted text reading result from the embedded RFID chip through an RFID reader. If both match, the page is considered authentic; otherwise, it can be determined that the content or structure has been tampered with. Thus, this embodiment of the invention enables each page of the paper document to be verifiable.

[0063] In other aspects of the embodiments of the present invention, the method further includes: splicing the content summaries of all pages in a preset order to obtain the full-text summary of the paper document.

[0064] After the report is generated, the content summaries of all pages are sequentially concatenated according to page number to form a content hash chain of the entire test report, i.e., the full-text summary of the paper document. In one embodiment, the full-text summary of the paper document is as follows: Digest_book = SHA256(D_1||D_2||…||D_n). Where D_1, D_2, and D_n represent the content summary of each page of the paper document, and Digest_book represents the full-text summary of the paper document. Digest_book can be encrypted using the SM7 algorithm and written to the secure area of ​​the embedded RFID chip located on the cover of the paper document, serving as an unalterable "master fingerprint" for the entire test report. During the verification phase, the summary can be compared using methods such as random page selection and complete recalculation to confirm the report's integrity and originality.

[0065] In other aspects of the embodiments of the present invention, the method further includes: reading data from the embedded RFID to obtain a full-text summary of the paper document; comparing the content summary recognition results of all pages of the paper document with the full-text summary of the paper document; and determining that the paper document has been tampered with if the comparison results of any page are different.

[0066] This invention allows the use of an RFID reader to read the full-text digest (Digest_book) embedded in the RFID tag on the cover of a paper document. By comparing the content summary recognition results of all pages of the paper document with the full-text digest (Digest_book), if the comparison results for any page differ, it is determined that the paper document has been tampered with. For example, if the comparison results differ, there may be page number tampering, page additions or deletions, or content reorganization. All such instances can be identified by comparing the content summary recognition results of all pages of the paper document with the full-text digest (Digest_book).

[0067] This invention overcomes the shortcomings of existing technologies, such as easy label removal, content modification, and loose verification mechanisms, by constructing a two-factor linkage anti-counterfeiting system of "embedded high-security RFID + invisible code collaboration," forming a closed-loop anti-counterfeiting solution covering the entire chain from data structure to physical process. Compared with existing anti-counterfeiting technologies, this application has the following main technical advantages: 1. This invention implements a content-bound, two-factor-linked anti-counterfeiting verification mechanism, completely breaking down the logical silos between printed content and RFID data. In existing technologies, the hidden code and RFID tag information are often independent, lacking a common generation path and data structure association. Attackers can copy the content and replace the tag to bypass verification. This invention constructs a "one-key-per-page" anti-counterfeiting algorithm, strictly binding the content digest (SHA-256) of each page with the ciphertext and page hidden code in the embedded RFID chip. After encryption using the SM7 algorithm, these are written to both the chip and the printed graphic, achieving digital chain-like anti-counterfeiting. This mechanism effectively improves anti-tampering capabilities, avoiding verification failure caused by content tampering while the tag remains unchanged. In other words, this invention innovatively calculates the digest of each page's content using a standard hash function (such as SHA-256), and uses the national cryptographic SM7 algorithm combined with the master key and page number information to generate a subkey for encryption. The encryption result is used to generate the hidden code and is also written to the user area of ​​the embedded RFID chip, achieving synchronous data binding between the content digest and the physical tag. This mechanism differs from the decentralized structure of existing technologies, which uses "RFID to store UID and invisible code to be independently encoded." It is the first time that a strong coupling design of "content-code-chip" has been introduced into an anti-counterfeiting system, which fundamentally prevents attacks such as page replacement and copying.

[0068] 2. Possesses overall report structure verification capabilities, supporting both page-by-page and whole-book verification levels of anti-counterfeiting. This application constructs a content summary chain for the entire report and generates an overall signature, which is then written into the cover chip, enabling the system to verify "whole-book consistency." This design differs from existing technologies that can only perform single-page verification. It can detect complex forgery behaviors such as adding or deleting pages, altering page order, and splicing across reports, ensuring the integrity and consistency of the entire report—a capability not yet available in existing technologies. In other words, after binding the summaries of each page, this system splices the page summaries sequentially to form a content summary chain, then uses SM7 encryption to generate the overall signature data for the entire report, and writes it into the secure area of ​​the cover chip. This mechanism ensures that any insertion, deletion, reordering, or text content tampering on any page can be detected through the overall summary chain verification, effectively solving the technical pain point of existing anti-counterfeiting mechanisms that "can only verify authenticity page by page and cannot identify overall structural tampering."

[0069] 3. A closed-loop automated verification path is formed, improving system verification efficiency and data consistency assurance capabilities. This invention employs a parallel acquisition and backend consistency verification process combining "hidden code + RFID," acquiring anti-counterfeiting data for both factors in a single scan at the code-reading terminal, achieving rapid verification with "non-contact, imperceptible, and second-level feedback." Combined with database verification and verification log recording mechanisms, a systematic verification process for batch documents can be implemented, effectively supporting document authenticity supervision and traceability in large-scale business operations. In other words, this invention designs a parallel reading mechanism for hidden codes and RFID, utilizing the terminal's infrared scanning and UHF card reading module to collaboratively acquire hidden information and chip data, and performing comparative analysis through a unified decoding interface. This mechanism supports rapid on-site verification and batch processing in the system backend, improving the operability and efficiency of anti-counterfeiting verification in actual business operations.

[0070] Furthermore, to ensure the non-replaceability and anti-transferability of the embedded RFID tag in its physical structure, the embedded RFID in this embodiment of the invention adopts an integrated ultra-thin embedded design. The overall thickness of the embedded RFID tag is controlled within 0.06mm, which can maintain high-frequency identification performance while ensuring consistency with the thickness and flexibility of ordinary A4 printing paper. This ensures full compatibility with existing document processing workflows such as laser printing, duplex copying, and binding, without causing problems such as paper jams, warping, or bulging.

[0071] Please refer to Figure 4 The embedded RFID tag has a multi-layered composite structure, consisting of the following layers from bottom to top: a bottom layer of fragile paper to enhance structural damage response during tearing; a middle layer of flexible PET carrier integrating the antenna circuit and a high-security chip (such as SCR402); and an top layer of wave-transparent flame-retardant paper with good electromagnetic wave penetration and mechanical protection. The antenna is made of aluminum or copper foil, typically 18–35 μm thick, and uses photolithography-etching to form a precise antenna pattern, which is then reliably connected to the central chip via silver paste bonding or thermal bonding.

[0072] In paper lamination, the embedded RFID inlay is first positioned and glued, then bonded to the hollow structure of the paper's middle layer, before undergoing a hot-pressing process. The hot-pressing process controls the temperature at approximately 120°C, the pressure at approximately 0.4 MPa, and the time at 2-3 seconds. The thermosetting adhesive layer efficiently presses the upper and lower paper bases and the PET flexible carrier together, forming a stable and uniformly stressed inlay. After hot pressing, the paper enters the cutting stage to ensure the tag is positioned at the edge or center of a predetermined area, facilitating subsequent reading and tamper-proof detection.

[0073] To prevent the tags from being illegally removed or transferred to other documents later, embodiments of this invention introduce a fragile area in the antenna structure. Specifically, the connection area between the antenna and the chip is covered with a highly viscous protective adhesive. Once subjected to stretching, bending, or prying, internal stress will concentrate in the weak area of ​​the antenna, causing it to break, opening the circuit, and thus completely disconnecting the chip, rendering the embedded RFID unresponsive. Furthermore, an optional version integrates a miniature resistor fuse. Once the external force exceeds a set threshold or tampering is detected, the fuse mechanism is triggered, permanently interrupting the power supply to the chip, achieving a "self-destruct" effect and enhancing the security level.

[0074] The embedded paper is flat and can be written and printed on normally. The tag is typically placed in the lower right corner of the report cover or on the left side near the binding edge, in a location that does not obstruct information display. It can be read quickly and non-contactly within a 1-2 meter range using standard UHF RFID readers, with a response time of less than 100ms, fully complying with the ISO / IEC 18000-6C standard and national electronic tag technical specifications. Environmental adaptability tests of the embedded RFID tags used in this invention demonstrate that they can operate for extended periods under extreme temperature and humidity conditions ranging from -40°C to +85°C, exhibit anti-static capabilities exceeding 8kV, and are unaffected by repeated folding, drops, or minor scratches. Their read / write performance is stable, and their service life can reach over 10 years, meeting the requirements for long-term preservation and high-frequency use of important documents such as test reports, inspection certificates, and archives.

[0075] This invention utilizes a composite encapsulation process for ultra-thin embedded RFID tags and standard paper, offering seamless application capabilities with high compatibility in printing and binding processes. The RFID inlay thickness is controlled to within 0.06mm, and the overall structure is embedded into A4 paper via thermoforming, without affecting the paper's mechanical or printing properties. It exhibits excellent compatibility with laser printing, duplex copying, and automatic binding. This technology surpasses existing patch or card-type RFID tag solutions, completely avoiding interference with printing and document usage processes caused by tag lifting, detachment, or excessive thickness. In other words, compared to traditional patch or laminated RFID tags, this invention uses a PET substrate with a thickness of less than 0.06mm, embedding the tag into the middle layer of standard A4 paper via thermoforming. After embedding, the paper surface is flat, without protrusions or lifting, and does not affect laser printer paper feeding, copier imaging, or document binding processes. This process enhances the integration capability of RFID in ordinary document materials, making it suitable for large-scale business deployment. It achieves a highly compatible process between ultra-thin embedded tags and paper, solving the problem of RFID tag structure interference with printing and binding processes. This invention employs a self-destructing antenna design and a fuse mechanism to prevent the chip from being disassembled, reused, or transplanted. The invention incorporates an antenna stress concentration fracture zone and high-adhesion adhesive encapsulation. If the tag is attempted to be torn or pried open, the antenna breaks, causing the embedded RFID to lose connection. Some designs may also embed a miniature fuse device, which permanently disables the chip through electrothermal fusing upon detection of unauthorized external force or disassembly. This structural physical anti-tampering mechanism is far superior to existing anti-transplantation capabilities that rely solely on tag adhesion strength, significantly improving the security of embedded RFID chips in important documents. In other words, the embedded RFID tag design of this invention uses a stress-concentrated antenna fracture point and high-adhesion protective adhesive, employing structural stress induction and an optional fuse mechanism to achieve a physical anti-tampering solution where the chip automatically fails upon removal, prying, or bending. Compared to existing tags that rely solely on adhesion for prying prevention, this solution establishes an irreversible damage path at the structural level, significantly improving physical anti-tampering capabilities. The fragile antenna structure with self-destructing characteristics prevents the embedded RFID chip from being illegally disassembled and transplanted.

[0076] In summary, the embodiments of the present invention, through integrated optimization from four aspects—algorithm layer, protection structure layer, embedding process layer, and system operation layer—achieve the core problems that existing document anti-counterfeiting technologies have failed to effectively cover, and have significant technological progress and industrial application value.

[0077] Device Examples Please refer to Figure 5 On the other hand, embodiments of the present invention also provide a paper document anti-counterfeiting device, comprising: Content summarization processing unit 501 is used to generate content summaries for all pages of a paper document; The invisible code printing unit 502 is used to map the content summary of each page of the paper document into an invisible code, and to print the invisible code in a designated area of ​​each page of the paper document. The RFID writing unit 503 is used to write the content summary of each page of the paper document into the embedded RFID of the paper document.

[0078] Optionally, the device further includes: An encryption unit is used to generate a specified key for each page of the paper document, and to encrypt the content digest of each page based on the specified key of each page to obtain the ciphertext digest of all pages; The step of mapping the content summary of each page of the paper document to an invisible code and printing the invisible code in a designated area of ​​each page of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; mapping the ciphertext of the summary of each page of the paper document to an invisible code; and printing the invisible code in a designated area of ​​each page. The step of writing the content summary of each page of the paper document into the embedded RFID of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; and writing the ciphertext of the summary of each page of the paper document into the embedded RFID of the paper document.

[0079] Optionally, the content summary of each page of the paper document includes a paper document identifier and / or a page identifier.

[0080] Optionally, the device further includes: The splicing unit is used to splice the content summaries of all pages in a preset order to obtain the full text summary of the paper document.

[0081] Optionally, the device further includes: The first comparison unit is used to identify the hidden code of all pages of the paper document and obtain the hidden code identification result of all pages of the paper document; the hidden code identification result includes the content summary identification result or the summary ciphertext identification result; to read data from the embedded RFID and obtain the content summary reading result or the summary ciphertext reading result of all pages of the paper document; to compare the content summary identification result of the first page with the content summary reading result of the first page, or to compare the summary ciphertext identification result of the first page with the summary ciphertext reading result of the first page, and if the comparison result is different, to determine that the first page has been tampered with; wherein the first page is any one of the pages of the paper document.

[0082] Optionally, the device further includes: The second comparison unit is used to read data from the embedded RFID to obtain the full-text summary of the paper document; compare the content summary recognition results of all pages of the paper document with the full-text summary of the paper document; and determine that the paper document has been tampered with if the comparison results of any page are different.

[0083] The paper document anti-counterfeiting device includes a processor and a memory. The content summary processing unit 501, the invisible code printing unit 502, and the RFID writing unit 503 are all stored in the memory as program units. The processor executes the program units stored in the memory to realize the corresponding functions.

[0084] A processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured.

[0085] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0086] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program that can be stored on a machine-readable storage medium, wherein when the computer program is executed by a processor, the computer is able to execute a paper document anti-counterfeiting method, the method including: generating a content summary of all pages of the paper document; mapping the content summary of each page of the paper document to an invisible code, and printing the invisible code in a designated area of ​​each page of the paper document; and writing the content summary of each page of the paper document into an embedded RFID tag in the paper document.

[0087] In another aspect, the present invention also provides a machine-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform a paper document anti-counterfeiting method, the method comprising: generating a content summary of all pages of the paper document; mapping the content summary of each page of the paper document to an invisible code; and printing the invisible code in a designated area of ​​each page of the paper document; and writing the content summary of each page of the paper document into an embedded RFID tag in the paper document.

[0088] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0089] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A paper document anti-counterfeiting system, characterized in that, include: The content summarization module is used to generate content summaries for all pages of paper documents. The invisible code printing module is used to map the content summary of each page of the paper document into an invisible code, and to print the invisible code in a designated area of ​​each page of the paper document. An RFID writing module is used to write the content summary of each page of the paper document into the embedded RFID tag of the paper document.

2. The anti-counterfeiting system for paper documents according to claim 1, characterized in that, The system further includes: an encryption module, used to generate a specified key for each page of the paper document, and to encrypt the content digest of each page based on the specified key of each page to obtain the ciphertext digest of all pages; The step of mapping the content summary of each page of the paper document to an invisible code and printing the invisible code in a designated area of ​​each page of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; mapping the ciphertext of the summary of each page of the paper document to an invisible code; and printing the invisible code in a designated area of ​​each page. The step of writing the content summary of each page of the paper document into the embedded RFID of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; and writing the ciphertext of the summary of each page of the paper document into the embedded RFID of the paper document.

3. The anti-counterfeiting system for paper documents according to claim 1 or 2, characterized in that, The content summary of each page of the paper document includes a paper document identifier and / or a page identifier.

4. The anti-counterfeiting system for paper documents according to claim 2, characterized in that, The RFID writing module is also used to splice the content summaries of all pages in a preset order to obtain the full text summary of the paper document.

5. The anti-counterfeiting system for paper documents according to claim 4, characterized in that, The system also includes: The invisible code recognition module is used to recognize the invisible codes on all pages of the paper document and obtain the invisible code recognition results for all pages of the paper document; the invisible code recognition results include content digest recognition results or digest ciphertext recognition results; The RFID reading module is used to read data from the embedded RFID to obtain the content summary reading result or the summary encrypted reading result of all pages of the paper document. The anti-counterfeiting comparison module is used to compare the content summary recognition result of the first page with the content summary reading result of the first page, or to compare the summary encrypted text recognition result of the first page with the summary encrypted text reading result of the first page. If the comparison results are different, it is determined that the first page has been tampered with; wherein the first page is any page among all pages of the paper document.

6. The anti-counterfeiting system for paper documents according to claim 5, characterized in that, The RFID reading module is also used to read data from the embedded RFID to obtain a full-text summary of the paper document; The anti-counterfeiting comparison module is also used to compare the content summary recognition results of all pages of the paper document with the full text summary of the paper document. If the comparison results of any page are different, it is determined that the paper document has been tampered with.

7. A method for preventing counterfeiting of paper documents, characterized in that, The method, applied to the anti-counterfeiting system for paper documents according to any one of claims 1 to 6, comprises: Generate a summary of the contents of all pages of the paper document; Map the content summary of each page of the paper document to an invisible code, and print the invisible code in a designated area of ​​each page of the paper document; The content summary of each page of the paper document is written into the embedded RFID tag of the paper document.

8. The anti-counterfeiting method for paper documents according to claim 7, characterized in that, The summary of all pages of the generated paper document also includes: Generate a specified key for each page of the paper document, and encrypt the content digest of each page based on the specified key to obtain the ciphertext digest of all pages; The step of mapping the content summary of each page of the paper document to an invisible code and printing the invisible code in a designated area of ​​each page of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; mapping the ciphertext of the summary of each page of the paper document to an invisible code; and printing the invisible code in a designated area of ​​each page. The step of writing the content summary of each page of the paper document into the embedded RFID of the paper document includes: determining the ciphertext of the summary corresponding to the content summary of each page of the paper document; and writing the ciphertext of the summary of each page of the paper document into the embedded RFID of the paper document.

9. The anti-counterfeiting method for paper documents according to claim 8, characterized in that, The content summary of each page of the paper document includes a paper document identifier and / or a page identifier.

10. The anti-counterfeiting method for paper documents according to claim 8, characterized in that, The method further includes: splicing the content summaries of all pages in a preset order to obtain the full text summary of the paper document.

11. The anti-counterfeiting method for paper documents according to claim 10, characterized in that, The method further includes: Identify the hidden codes on all pages of the paper document to obtain the hidden code identification results for all pages of the paper document; the hidden code identification results include content summary identification results or summary ciphertext identification results; Data is read from the embedded RFID to obtain the content summary reading result or the summary ciphertext reading result of all pages of the paper document; The content summary recognition result of the first page is compared with the content summary reading result of the first page, or the summary ciphertext recognition result of the first page is compared with the summary ciphertext reading result of the first page. If the comparison results are different, it is determined that the first page has been tampered with; wherein the first page is any page among all pages of the paper document.

12. The anti-counterfeiting method for paper documents according to claim 11, characterized in that, The method further includes: Data is read from the embedded RFID to obtain a full-text summary of the paper document; The content summary recognition results of all pages of the paper document are compared with the full text summary of the paper document. If the comparison results of any page are different, it is determined that the paper document has been tampered with.

13. A paper document anti-counterfeiting device, characterized in that, include: The content summarization processing unit is used to generate a content summary of all pages of a paper document; An invisible code printing unit is used to map the content summary of each page of the paper document into an invisible code, and to print the invisible code in a designated area of ​​each page of the paper document. An RFID writing unit is used to write the content summary of each page of the paper document into the embedded RFID tag of the paper document.

14. A machine-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the paper document anti-counterfeiting method according to any one of claims 7 to 12.

15. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the paper document anti-counterfeiting method according to any one of claims 7 to 12.

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