Method and system for realizing remote signing of electronic delivery file based on handwriting envelope decryption

Abstract

The invention discloses a method for achieving electronic file delivery and remote signing based on handwriting envelope decryption and stabbing. The method comprises the steps that a sending end determines documents needing to be delivered and to be signed, configures signing information of a recipient, generates a virtual envelope, encrypts the envelope with an original handwriting electronic signature of the recipient as a secret key and sends the encrypted envelope; the receiving end analyzes the handwriting envelope so as to compare the handwriting characteristics of the electronic signature signed by the sender on site with the original handwriting electronic signature, and decrypts the handwriting envelope; and when the recipient signs, the signed handwriting features are extracted for comparative analysis, and if the comparison succeeds, a signing event is recorded, and a signed document is generated and pushed to the delivery end. The electronic document remote delivery and signing system which is safe, efficient and easy to operate is constructed based on the unique handwriting characteristics of the user, and the problems of data safety, data leakage and electronic document signing handwriting verification can be solved.

Description

Technical Field

[0001] The present invention relates to the field of artificial intelligence technology, and in particular to a method for remote signing of electronically delivered documents. Background Art

[0002] In the case handling by public security, procuratorial, judicial and judicial organs, the main methods of delivering documents currently include the following:

[0003] 1. Direct delivery: This is the most basic and commonly used delivery method, which refers to a delivery method in which the public security and judicial organs send personnel to deliver the litigation documents directly to the recipient. Usually, the litigation documents should be delivered to the recipient, and the recipient shall record the date of receipt on the delivery receipt and sign or stamp it. If the recipient is not present, the adult family member living with him or her or the person in charge of the unit where he or she works can receive it on his or her behalf. The person who receives it on his or her behalf shall also record the date of receipt on the delivery receipt and sign or stamp it.

[0004] 2. Mail service: This is a method whereby the litigation documents are sent to the recipient by registered mail through the post office. When the documents are sent by mail, a receipt should be attached, and the date of receipt indicated on the registered mail receipt shall be the date of delivery. This method is more convenient and quick, but it is necessary to ensure the safety and integrity of the documents.

[0005] 3. Electronic delivery: Electronic delivery is a delivery method using modern electronic means, including fax, email, delivery system, etc. However, electronic delivery must be agreed by the recipient and confirmed that he or she can receive it. Documents such as case filing, ruling, mediation, and agreement can all be delivered electronically. If delivered electronically, the date on which the delivery information reaches the recipient's specific system is the delivery time.

[0006] Among the above service methods, electronic service has attracted attention due to its convenience and efficiency improvement. However, the current electronic service method still has the following shortcomings:

[0007] 1. The security of documents transmitted via the Internet cannot be guaranteed.

[0008] First of all, after the existing electronic documents are delivered, you can view the files by simply logging into the corresponding product or email, and data security cannot be guaranteed.

[0009] Secondly, from a technical perspective, Internet transmission does have certain security risks. The Internet is an open network environment, and data may be subject to various network attacks during transmission, such as man-in-the-middle attacks, data eavesdropping, tampering, etc. These attacks may cause electronically delivered documents to be illegally obtained, tampered with, or deleted during transmission, thus seriously threatening the security and integrity of the documents.

[0010] Thirdly, electronically delivered documents often contain sensitive information, such as personal privacy, business secrets, etc. Once such information is leaked or tampered with, it may cause serious losses to individuals or enterprises. For example, the leakage of personal privacy may lead to crimes such as identity theft and fraud; the leakage of business secrets may damage the competitiveness and economic interests of enterprises.

[0011] However, we cannot ignore electronic delivery and Internet transmission. In order to ensure the security of electronic delivery documents, we can take a series of technical and management measures. For example, use encryption technology to encrypt data transmission to ensure that data is not illegally obtained during transmission; use digital signature technology to ensure the integrity and authenticity of data; establish strict data access rights control to prevent unauthorized access and operation; regularly conduct security audits and vulnerability scans on the system to promptly discover and repair potential security risks.

[0012] 2. It is impossible to verify whether the electronic document was viewed and signed by the person himself

[0013] Identity verification and authenticity confirmation is a key issue in the use of electronic documents.

[0014] First, a significant difference between electronic documents and traditional paper documents is their digitization and reproducibility. This feature makes electronic documents easy to be copied, tampered with or signed in a false name during transmission and storage, making it difficult to ensure the authenticity of the document and the identity of the signatory.

[0015] Secondly, in an electronic environment, it becomes particularly complicated to verify whether the signatory is the real person. Traditional paper signatures can be authenticated through physical features such as handwriting and signature style, but electronic signatures lack these intuitive verification methods. If there is no effective technical means to authenticate identity, then electronic documents may be forged or signed in the name of someone other than the signatory.

[0016] In the existing technology, in order to ensure the security of electronic delivery documents, there are already some technical and management measures. For example, encryption technology is used to encrypt data transmission to ensure that data is not illegally obtained during transmission; digital signature technology is used to ensure the integrity and authenticity of data; strict data access rights control is established to prevent unauthorized access and operation.

[0017] Moreover, with the development of technology, digital signatures, biometrics and other authentication methods have been widely used in the signing process of electronic documents to verify the identity and authenticity of electronic documents during use. Digital signatures can ensure the identity of the signer and the integrity of the document through cryptographic principles, while biometrics such as fingerprints and facial recognition can verify the identity of the signer through biological characteristics.

[0018] However, in actual business operations, these technologies each solve part of the problem separately, and have not been effectively combined to completely solve the problems of security and identity recognition in the delivery of electronic documents. In particular, for application scenarios such as the delivery of judicial documents in public security, procuratorial and judicial case handling, which have extremely high security and legal requirements, there are still major problems and defects. Summary of the invention

[0019] In view of the above problems existing in the prior art, the present invention aims to provide a method and system for remote signing of electronically delivered documents based on handwriting envelope decryption, so as to solve the problems of data security, leakage and handwriting verification of electronic document signatures.

[0020] Specifically, the present invention has two core technical points to be solved:

[0021] The first is the decryption of the electronic document handwriting envelope. After the existing electronic documents are delivered, you can view the files by logging into the corresponding product or mailbox, and the data security cannot be guaranteed. The present invention uses the handwriting envelope decryption technology to encrypt the electronic documents, and uses the original handwriting signature of the recipient of the document as the key. When the electronic document is delivered, the recipient must verify his or her own handwriting before opening the envelope to view the electronic document. The handwriting signature of any other person cannot open the electronic document. This avoids the problem that other people can also view the delivered electronic documents, and solves the problem of data security and leakage.

[0022] The second is the handwriting verification of electronic document signatures. After the existing electronic documents are delivered, there is no way to identify the specific signer. Anyone can sign, and it is impossible to determine whether it is signed by the person himself. In response to this problem, the present invention solves the problem of signatory identity through handwriting verification. First, the real handwriting of the recipient, that is, the original handwriting signature, is parsed during the decryption process of the handwriting envelope. When the document is signed, the handwriting of the signature is compared with the handwriting of the original handwriting signature to determine whether it is the same person based on the handwriting. Only when the handwriting is verified to be the same person, the signature is valid. If the handwriting verification fails, the user is reminded to sign again.

[0023] The technical solution of the present invention is as follows:

[0024] In a first aspect, the present invention proposes a method for electronic document delivery and remote signing based on handwriting envelope decryption, the method comprising the following steps:

[0025] Handwriting envelope encryption: The sender determines the documents to be delivered and signed, configures the recipient's signature information, generates a virtual envelope and loads the documents to be delivered and signed into the envelope, obtains the recipient's original handwriting electronic signature, that is, the sample handwriting as the key to unlock the document envelope, encrypts the document envelope, obtains the handwriting envelope, and sends it to the receiving end.

[0026] Handwriting envelope decryption: The receiving end parses the handwriting envelope, obtains the original handwriting electronic signature of the recipient, collects the electronic signature signed on the spot when the recipient opens the handwriting envelope and extracts the handwriting features, and compares the handwriting features with the original handwriting electronic signature, i.e. the retained handwriting sample. If the comparison is successful, the handwriting envelope is decrypted and opened, allowing the document contents in the envelope to be viewed and processed.

[0027] Signature handwriting verification: The receiving end obtains the electronic signature signed by the recipient in real time, extracts the signature handwriting features, and compares and analyzes it with the original handwriting electronic signature of the encrypted envelope, i.e. the retained handwriting sample. If the comparison is successful, the signing event is recorded and the signed document is generated and pushed to the delivery end simultaneously.

[0028] Further preferably, in the handwriting envelope encryption, the encryption of the document envelope utilizes the writer's writing habits and handwriting characteristics, and through handwriting recognition, image processing and encryption algorithms, the writer's handwriting is converted into an electronic handwriting signature with personal characteristics, and the electronic handwriting signature is bound or associated with the envelope; the writing habits include pen speed, pen pressure, stroke order, and writing angle, which together constitute the biometric characteristics of the handwriting; the handwriting characteristics include the size, shape, inclination, and pressure distribution of the handwriting.

[0029] Further preferably, in the handwriting envelope encryption, the configuration of the recipient's signature information includes but is not limited to the signatory's name, fingerprint, seal, long text, confirmation word, time and / or additional information, that is, the configuration of the specified type. In addition, the corresponding signature position and size can also be configured.

[0030] Further preferably, in the handwriting envelope decryption, the receiving end parses the handwriting envelope to obtain the original handwriting electronic signature of the recipient, which means: parsing the information on the handwriting envelope in the received electronic data packet, including the recipient and the handwriting used for encryption, and extracting the encrypted handwriting information to obtain the original sample handwriting.

[0031] Further preferably, the original handwriting electronic signature of the recipient is a unique digital signature generated based on a handwriting sample written in advance by the recipient by extracting handwriting feature information. The original handwriting electronic signature is associated with the identity verification information of the recipient, and the identity verification information includes but is not limited to biometric features such as ID cards, fingerprints or facial recognition.

[0032] Further preferably, when verifying the signature handwriting, the receiving end obtains the electronic signature of the recipient through a handwriting input device. During the signing process, the handwriting features of the signatory are recorded and extracted, and handwriting recognition and image processing technology are used to detect the similarity between the retained handwriting and the electronic signature handwriting. If the verification fails, the recipient is prompted to re-sign or take other security measures to ensure the validity of the signature. If the verification is successful, the electronic signature is placed at the document signing position, the signing event is recorded, and the signed document is generated and pushed to the delivery end simultaneously.

[0033] Further preferably, after decrypting the handwriting envelope and before allowing the electronic document to be viewed, a document viewing verification step can also be included, in which the recipient is subject to facial recognition verification, and if the verification is passed, the document viewing permission is granted.

[0034] In a second aspect, the present invention provides a system for electronic document delivery and remote signing based on handwriting envelope decryption, the system comprising the following functional modules:

[0035] Handwriting envelope encryption module: It is configured to determine the documents to be delivered and signed at the sending end, configure the signature information of the recipient, generate a virtual envelope and load the documents to be delivered and signed into the envelope, obtain the original handwriting electronic signature of the recipient, that is, the sample handwriting as the key to unlock the document envelope, encrypt the document envelope, obtain the handwriting envelope, and send it to the receiving end.

[0036] Handwriting envelope decryption module: configured to parse the handwriting envelope at the receiving end, obtain the original handwriting electronic signature of the recipient, collect the electronic signature signed by the recipient when opening the handwriting envelope and extract the handwriting features, compare the handwriting features with the original handwriting electronic signature, that is, the sample handwriting, and decrypt and open the handwriting envelope if the comparison is successful, allowing the document content in the envelope to be viewed and processed.

[0037] Signature handwriting verification module: It is configured to obtain the electronic signature signed by the recipient in real time at the receiving end, extract the handwriting features of the signature, and compare and analyze it with the original handwriting electronic signature of the encrypted envelope, that is, the sample handwriting. If the comparison is successful, the signing event is recorded and the signed document is generated and pushed to the delivery end simultaneously.

[0038] Further preferably, the encryption of the handwriting envelope encryption module utilizes the writer's writing habits and handwriting characteristics, and through handwriting recognition, image processing and encryption algorithm, converts the writer's handwriting into an electronic handwriting signature with personal characteristics, and binds or associates the electronic handwriting signature with the envelope; the writing habits include pen speed, pen pressure, stroke order, and writing angle, which together constitute the biometric characteristics of the handwriting; the handwriting characteristics include the size, shape, inclination, and pressure distribution of the handwriting.

[0039] Further preferably, in the handwriting envelope encryption module, the recipient's signature information is configured, including but not limited to the signatory's name, fingerprint, seal, long text, confirmation word, time and / or additional information, that is, the specified type is configured. The corresponding signature position and setting size can also be configured.

[0040] Further preferably, in the handwriting envelope decryption module, the receiving end parses the handwriting envelope to obtain the original handwriting electronic signature of the recipient, which means: parsing the information on the handwriting envelope in the received electronic data packet, including the recipient and the handwriting used for encryption, and extracting the encrypted handwriting information to obtain the original sample handwriting.

[0041] Further preferably, the original handwriting electronic signature of the recipient is a unique digital signature generated based on a handwriting sample written in advance by the recipient, by extracting handwriting feature information. The original handwriting electronic signature is associated with the identity verification information of the recipient, and the identity verification information includes but is not limited to biometric features such as ID cards, fingerprints or facial recognition.

[0042] Further preferred, the signature handwriting verification module obtains the electronic signature of the recipient through a handwriting input device through the receiving end. During the signing process, the handwriting features of the signer are recorded and extracted, and the similarity between the sample handwriting and the electronic signature handwriting is detected using handwriting recognition and image processing technology. If the verification fails, the recipient is prompted to re-sign or take other security measures to ensure the validity of the signature. If the verification is successful, the electronic signature is placed at the document signing position, the signing event is recorded, and the signed document is generated and pushed to the delivery end simultaneously.

[0043] Further preferably, the system also includes a document viewing and verification module, which is configured to perform facial recognition verification on the recipient after decrypting the handwriting envelope and before viewing the document, and the document viewing permission is opened if the verification is passed.

[0044] By adopting the above technical solution, the present invention at least includes the following technical effects:

[0045] 1. Encrypt electronic documents by handwriting to solve the security issues in the delivery process

[0046] The present invention encrypts the envelope that encapsulates the electronic document by encrypting the handwriting of the recipient, ensuring that it will not be illegally intercepted and tampered with during the transmission process, thereby protecting the confidentiality and integrity of the information. Even if the document is received by others during the delivery process, they cannot open the envelope and cannot view the content of the document.

[0047] 2. Handwriting verification when signing documents to ensure that the documents are signed by the person himself

[0048] When encrypting the handwriting envelope, the present invention needs to upload a sample of handwriting as the original handwriting. When the recipient receives the document and signs it, the signed handwriting will be analyzed and compared with the sample handwriting to determine whether the signature is signed by the recipient. If the handwriting verification is that the recipient has signed it, the document signature is valid. If the handwriting verification fails, the document cannot be signed and a prompt "Handwriting verification failed, please sign again" will be displayed until the recipient signs it and the handwriting verification passes. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 System block diagram for implementing electronic document delivery and remote signing based on handwriting envelope decryption in this exemplary embodiment;

[0050] Figure 2 A logic diagram of a method for electronic document delivery and remote signing based on handwriting envelope decryption in this exemplary embodiment. DETAILED DESCRIPTION

[0051] Glossary of technical terms:

[0052] Electronic delivery: refers to the method of transmitting documents that need to be reviewed and signed by users through encrypted network transmission, and the recipient reviews and signs online.

[0053] Handwriting envelope: refers to the encryption method of files. When uploading files, the user's electronic signature handwriting is uploaded simultaneously. This document can only be decrypted if the handwriting of the electronic signer is successfully matched.

[0054] Server and recipient: The server refers to the person who sends the document, and the recipient refers to the person who receives the document.

[0055] The technical solution of the present invention is mainly designed around the data security and identity verification in the process of document delivery. First, at the data security level, after selecting the document to be signed and configuring the signing information, the original handwriting signature of the recipient is required to be used as the key to unlock the document envelope to form a handwriting envelope, so that no one else can unlock the delivered document, only the person's handwriting can. Secondly, when signing the document, the handwriting of the signature will also be compared and analyzed with the original handwriting uploaded when the envelope was encrypted. Only when the handwriting comparison is the same person, the signature is valid. The person in charge needs to re-sign the document to solve the problem of non-personal signature after the document is delivered. In order to further increase security, face verification conditions can also be set when viewing the file to determine the identity information of the viewer. That is, face recognition is used as an auxiliary verification, because handwriting comparison will have a small error. If handwriting is combined with face, the error problem can be better solved. Of course, in actual business development, face recognition can be configured, and face recognition can be turned on or off.

[0056] The exemplary embodiment of the present application is as follows Figure 1 As shown in the figure, the electronic document delivery and remote signing system based on handwriting envelope decryption is designed mainly from the following four aspects:

[0057] 1. Handwriting Envelope Encryption Module

[0058] Electronic document delivery technology is one of the main ways of delivering litigation documents in a modern way. It uses electronic means such as the Internet, e-mail, and application systems to send electronic versions of legal documents to the recipients, who can then view and sign the documents through the corresponding platform.

[0059] The documents targeted by the embodiments mainly refer to documents generated in the process of handling cases by public security, procuratorial and judicial organs, which need to be reviewed or signed by the recipient.

[0060] In an embodiment, the electronic delivery of documents adopts the handwriting envelope encryption delivery method. The handwriting envelope encryption module is configured to determine the documents to be delivered and signed at the sending end, configure the signature information of the recipient, generate a virtual envelope and load the documents to be delivered and signed into the envelope, obtain the original handwriting electronic signature (digital signature, i.e., sample handwriting) of the recipient as the key to unlock the document envelope, encrypt the document envelope, obtain the handwriting envelope, and send it to the receiving end.

[0061] The following embodiment is a detailed description of the handwriting envelope encryption module in the application system of electronic delivery of public security, procuratorate and court:

[0062] First, select the recipient of the document to be served, and then upload the document that needs to be reviewed and signed by the user. If the recipient needs to sign the document, the document needs to be configured with corresponding signing information, including but not limited to signature, fingerprint, time, confirmation word, etc. The so-called configuration is to specify the type, select the corresponding signing position, set the size, and the configuration is completed. Selecting the corresponding signing position means placing the content to be signed in the area where it should be signed. The recipient can only sign at this position after receiving it. Its function is to limit the location information and type of signature. After the user receives the delivered document, he needs to sign the document according to the configured signing requirements.

[0063] The document envelope is then encrypted with handwriting. The basic principle of handwriting encryption is to use the writer's unique writing habits and handwriting characteristics to write the information on the envelope in a way that is not easy to imitate or identify. These characteristics include pen speed, pen pressure, stroke order, writing angle, etc. These together constitute the biometric characteristics of handwriting and constitute the writer's unique "signature". When the recipient receives the envelope, the authenticity of the identity can be verified by comparing the handwriting.

[0064] The document envelope here is a virtual carrier. When you select a document to send, the system will automatically build this virtual envelope, which is used to load the document to be signed. This envelope is encrypted by fusing and binding with an original handwriting signature, and this handwriting is used as the key to unlock the document envelope. That is, the system will generate a symmetric encryption key (handwriting key), which will be used to encrypt the data in the envelope. The generated symmetric encryption key is used to encrypt the data in the envelope, and the encrypted data is stored or transmitted in ciphertext. The encryption key needs to be properly managed at the key management level to ensure its security and availability.

[0065] In addition, the recipient of the document needs to write a handwriting sample in advance in the system. The system will analyze the handwriting characteristics, such as writing speed, pen pressure, stroke order, writing angle, etc., and process it into digital handwriting, that is, the original handwriting electronic signature. Everyone's handwriting is unique, just like fingerprints, which makes handwriting a recognizable biometric feature used to encrypt and decrypt files.

[0066] 2. Handwriting Envelope Decryption Module

[0067] The handwriting envelope decryption module is configured so that, after receiving the handwriting envelope sent by the sending module, the receiving end will parse the handwriting envelope, obtain the original handwriting electronic signature of the recipient, collect the electronic signature signed by the recipient when opening the handwriting envelope, extract the handwriting features, and then compare the handwriting features with the original handwriting electronic signature (i.e. the sample handwriting). If the comparison is successful, the handwriting envelope will be decrypted and opened, allowing the document contents in the envelope to be viewed and processed.

[0068] In the electronic delivery application system of the public security, procuratorate, and court, after the recipient receives the handwriting envelope containing the document, he needs to use his real handwriting to decrypt the handwriting envelope, that is, use the recipient's handwriting as the decryption key. Handwriting envelope decryption is a security mechanism based on handwriting recognition, in which handwriting is used as the basis for decrypting the envelope or verifying the identity. When the recipient decrypts the handwriting envelope, the system will use handwriting recognition technology to analyze the writer's handwriting characteristics, such as writing speed, pen pressure, stroke order, writing angle, etc., and then compare and analyze with the sample handwriting to determine whether the two handwritings are written by the same person, so as to identify the writer's identity or verify the authenticity of his writing. The envelope can only be opened if it is determined to be the handwriting of the same person. The handwriting of any other person cannot open the envelope.

[0069] Specifically, in the handwriting envelope decryption link, the receiving end will first identify and process the envelope and document parts of the electronic data packet of the received handwriting envelope separately. For the envelope, the system will parse the information on it, including the recipient and the handwriting used for encryption, and extract the encrypted handwriting information to obtain the original sample handwriting. Specifically, the system extracts the handwriting data written by the sender from the virtual envelope, including parameters such as stroke order, pressure, speed, etc., and compares the processed handwriting data with the pre-stored sender handwriting template to verify the sender's identity. If the identity authentication is successful, the system will obtain the key for decrypting the envelope, select the corresponding decryption algorithm according to the encryption method of the envelope, and use the decryption key and decryption algorithm to decrypt the ciphertext data in the envelope to obtain the original data. Subsequently, the signature written by the recipient on the spot is obtained, and then the signature used for decryption is automatically compared and analyzed by the system with the parsed original sample handwriting. The system will compare the obtained handwriting information with the pre-stored sample signature to verify the validity of the signature. Once the signature is verified to be valid, the system will unlock the envelope and enable access rights, allowing the recipient to view and process the contents of the document in the envelope. The entire process must strictly comply with laws, regulations and privacy policies to ensure the legality and security of the data.

[0070] 3. Document review and verification module

[0071] There may be errors in the handwriting recognition process. In order to improve security, after opening the handwriting envelope, the identity can be confirmed again when viewing the document. Therefore, a document viewing and verification module can be further set up and configured to use face recognition or fingerprint recognition for verification, so as to provide double protection for the electronic delivery of documents.

[0072] For example, when checking documents, facial verification technology is used as an advanced means of identity verification. This technology mainly recognizes people based on their facial features and is highly accurate and convenient.

[0073] Face verification technology is based on biometrics, especially the recognition of facial features. It uses a camera or webcam to capture images or video streams containing faces, and automatically detects and tracks faces in the images. Then, the detected faces are extracted and compared to determine their identity.

[0074] However, in actual business operations, whether to use face recognition or fingerprint recognition can be configured according to security needs, so you can set the option to turn it on or off. If you choose not to turn it on, face recognition will not be performed.

[0075] 4. Signature Handwriting Verification Module

[0076] In the process of document signing, verifying the authenticity of identity through handwriting is an effective method. As one of the unique biological characteristics of an individual, handwriting is difficult to imitate and irreplaceable, making it an ideal way to identify and confirm one's intention.

[0077] In an embodiment of the present invention, the signature handwriting verification module is configured to obtain the electronic signature signed by the recipient in real time at the receiving end, further extract the handwriting features of the signature, and compare and analyze it with the original handwriting electronic signature of the encrypted envelope (i.e., the sample handwriting). If the comparison is successful, the signing event is recorded and the signed document is generated, which is pushed to the delivery end simultaneously.

[0078] The signature handwriting verification is mainly based on a comprehensive analysis of the recipient's writing speed, pen pressure, stroke order, writing angle, etc. Everyone's writing habits are unique, and even if you deliberately imitate, it is difficult to completely replicate the handwriting characteristics that are consistent with the original sample. Therefore, by comparing the handwriting on the signed document with the handwriting of a known sample (such as a signature), it can be determined whether the signer is the same person.

[0079] Specifically, when the document is signed, the handwriting features of the signatory's real-time signature are extracted, and then compared and analyzed with the original sample handwriting to determine whether the two signatures are from the same person. If they are, the document signature is valid. If it is verified that the sample handwriting and the signed handwriting are not from the same person, then the signature is invalid and needs to be re-signed until it is determined that the two signatures are from the same person and the signature is valid.

[0080] The following combination Figure 2 , and then around the entire process of electronic document delivery, the specific application implementation details at each process node are elaborated from the two roles of the delivery party and the delivery recipient:

[0081] For this embodiment, generally speaking, you first need to unseal the envelope through handwriting. The document can be viewed only after the handwriting verification passes and the envelope is unsealed. When viewing the document, you need to verify your face once (not required). After the face verification passes, if the document is correct, you need to sign the document. Signing the document means signing your own information on the document according to the configuration requirements, such as a signature. This is also the second signature and handwriting verification of the entire process. This method can ensure that the recipient of the document, the person who unseals the envelope, and the person who signs the document are the same person.

[0082] 1. Select the document:

[0083] At this stage, the server logs in to the electronic document delivery and signing platform or system, and selects various types of electronic documents that need to be viewed or signed by the local recipient. These documents can also be preset in the platform in advance, such as notices, agreements, announcements, legal documents, etc., so that users can quickly find the required documents. Users can search by conditions such as file name, keywords or date, and select the documents that need to be delivered and signed. Once selected, the electronic delivery platform or system will record the document content information of the document and convert it into a configurable signature format, such as PDF and OFD, to prepare for the subsequent signing configuration process.

[0084] 2. Configure signing information:

[0085] After selecting the document, the server needs to configure some necessary signing information, including but not limited to the signatory's name, fingerprint, seal, long text, confirmation word, time, etc., as well as possible additional information such as signing instructions.

[0086] Configuration refers to configuring the specific content of the signature on the document that needs to be signed. First, the person who signs the document needs to be specified. If multiple people are involved, a signing process needs to be specified. Secondly, the signing location area and the size of the signing area need to be configured for the configured signing information. This information helps to achieve standardized signing during the signing process. After configuration, when the recipient receives the document, he or she can only sign according to the configured area. For example, if an area is configured in the lower right corner of the signed document for signature, then after receiving the document, the recipient needs to sign his or her name in the configured lower right corner, and provide audit and traceability basis when needed in the future to ensure the efficiency and timeliness of the signing process.

[0087] 3. Upload handwriting to encrypt the envelope:

[0088] In order to ensure the secure transmission of electronic documents, the server needs to upload the recipient's handwritten signature as an encryption key. The recipient's handwritten signature is a sample signature reserved in advance by the recipient, that is, the recipient writes his or her name or specified text in advance through a handwriting input device (such as a touch screen or handwriting tablet). The system uses existing mature handwriting recognition and image processing technology and encryption algorithms to convert this handwriting into an electronic handwriting signature with personal characteristics. The electronic handwriting signature is usually associated with the recipient's identity verification information, such as documents, biometrics (such as fingerprints or facial recognition), etc.

[0089] This electronic handwriting signature is then used as the decryption key for the handwriting envelope, which is used to load the selected electronic delivery document to form an encrypted envelope, namely the handwriting envelope. The encryption process of the envelope ensures that even if the document is intercepted during transmission, it cannot be decrypted and viewed by unauthorized personnel.

[0090] 4. The recipient decrypts the envelope through electronic signature

[0091] The encrypted handwritten envelope containing the electronic document is sent to the designated recipient via the document electronic delivery platform or email or other electronic channels.

[0092] After receiving the handwritten envelope, the recipient needs to compare his / her electronic signature signed on site with the encrypted electronic handwriting signature to achieve decryption. That is, the system determines the identity information of the recipient through handwriting recognition verification in the computer background based on the electronic signature signed on site during decryption and the electronic signature uploaded to the electronic delivery system during encryption. If it is confirmed that the handwriting is the same, the system allows the recipient to access the encrypted electronic document. This step ensures that only the legitimate recipient can view and sign the document.

[0093] Specifically, the system will use the preset encryption method and the corresponding key to decrypt the received encrypted envelope. This step is similar to opening a lock with a specific key, with the purpose of restoring the original handwriting information. After the decryption is successful, the system will automatically retrieve the pre-stored electronic document. This process is similar to comparing the handwriting identification expert's sample with the handwriting to be identified to accurately verify the validity of the signature. Once the system confirms that the signature is valid, it means that the handwriting match is successful. Then the system will automatically unlock the access rights to the document part of the envelope, allowing the receiving user to view and process the document content in the envelope. The entire decryption and verification process is automatically completed in the computer background, ensuring the security of the envelope content and the validity of the signature.

[0094] 5. Face identity verification:

[0095] The system will also perform a facial verification before decrypting the envelope and preparing to view the document.

[0096] This step is to further enhance security and prevent fraud. The system captures the real-time facial image of the person to whom the document is served through the camera and compares it with the face photo stored in the system. If the comparison is successful, the verification is passed; if it fails, the document cannot be viewed, ensuring the legal identity of the person viewing the document.

[0097] If facial verification is selected in the electronic delivery system, once the facial verification is passed, the recipient of the document can view the decrypted content of the electronic document. If facial verification is not required, this step will not occur.

[0098] 6. Check the documents:

[0099] The system provides a clear and easy-to-use interface, allowing the recipient to carefully read all the contents of the document. In order to enhance readability and comprehension, the system can also provide some auxiliary functions, such as zooming, scrolling, etc. The recipient can spend enough time to review the contents of the document and ensure that he fully understands the terms and conditions therein.

[0100] 7. Signing documents:

[0101] After checking and confirming that the document is correct, if it is a document that needs to be signed, the recipient will see a "sign" button when viewing the document, and the recipient needs to sign the document. The recipient signs electronically through a handwriting input device. During the signing process, the system background will collect, analyze and extract the handwriting characteristics of the signer, including pen speed, pen pressure, stroke order, writing angle, etc., for subsequent handwriting verification. To ensure the authenticity and integrity of the signature.

[0102] 8. Handwriting verification:

[0103] After the signature is completed, the electronic delivery system will verify the signatory's handwriting when encrypting the envelope and the handwriting when signing the document.

[0104] That is, the handwriting recognition module is called and the image processing module is used to detect the handwriting of the sample when encrypting the envelope and the handwriting of the document when signing. The handwriting similarity of the two signatures is compared. If the verification fails, the system will prompt the recipient to re-sign or take other security measures to ensure the validity of the signature. If the verification is successful, the system will record the signing event and generate the signed document, which will be pushed to the delivery end synchronously.

[0105] 9. Complete the signing:

[0106] Once all verification and signing steps are successfully passed, the electronic delivery system will formally record the signing event and generate the signed electronic documents. These documents can serve as legal evidence of the legitimacy and validity of the signing. In addition, the system can also send notifications or reminders to the signing parties to inform them that the signing has been completed and the corresponding supporting documents have been provided.

[0107] At this point, the entire process of remote signing of electronically delivered documents based on handwriting envelope decryption is completed. The entire process combines modern cryptography, biometric technology and electronic signature technology to ensure that the remote signing process of electronic documents is both safe and efficient.

[0108] The present invention constructs a safe, efficient and easy-to-operate electronic document remote delivery and signing system based on the user's unique handwriting characteristics. The user writes a specified text or signature through a handwriting input device (such as a touch screen, handwriting tablet, etc.). The system uses advanced handwriting recognition technology to extract feature information and generates a unique "handwriting envelope" based on this. This envelope not only contains the electronic document to be signed, but also embeds encryption information related to the handwriting characteristics, ensuring the security and integrity of the document during transmission. During the decryption process, the user's identity is confirmed by verifying the degree of match between the user's rewritten handwriting and the original digital signature. During the signing process, the authenticity and legality of the signing process are ensured by re-verifying the degree of match between the user's handwriting characteristics when signing and the original digital signature.

[0109] Based on the above embodiments, it can be seen that the present invention has the following characteristics:

[0110] Personalized handwriting encryption and decryption: Using the user's handwriting characteristics as encryption keys, a personalized encryption method is implemented. The encrypted envelope contains the electronic document to be decrypted and the encrypted information related to the handwriting characteristics. After the user passes the identity authentication, the system uses the user's digital signature to decrypt the encrypted information to restore the original electronic document. Each user's handwriting is unique, so the generated handwriting envelope is also unique, which greatly improves the security of the data.

[0111] Convenience of remote signing: Users do not need to sign face to face, but can complete the signing process through electronic devices. This greatly saves time and costs and improves signing efficiency.

[0112] Multi-authentication: In addition to handwriting recognition, the system can also combine other authentication methods (such as face recognition, fingerprint recognition, etc.) to form a multi-security mechanism to ensure the authenticity and legality of the signing process.

[0113] Data integrity protection: The handwriting envelope uses advanced encryption technology during the transmission process to ensure the confidentiality and integrity of electronic documents. Even if the data is intercepted or tampered with during the transmission process, it cannot be decrypted or restored to the original content.

[0114] Easy to integrate and expand: This technology can be easily integrated into existing electronic signature platforms or systems without large-scale transformation or upgrading of the original system. At the same time, it also has good scalability and can adapt to electronic signature scenarios of different scales and needs.

Claims

1. A method for electronic document delivery and remote signing based on handwriting envelope decryption, characterized in that: include: Handwriting envelope encryption: The sending end determines the documents to be delivered and signed, configures the recipient's signature information, generates a virtual envelope, loads the documents to be delivered and signed into the envelope, obtains the recipient's original handwriting electronic signature, i.e., the sample handwriting, as the key to unlock the document envelope, encrypts the document envelope, obtains the handwriting envelope, and sends it to the receiving end; Handwriting envelope decryption: The receiving end parses the handwriting envelope, obtains the original handwriting electronic signature of the recipient, collects the electronic signature signed on the spot by the recipient and extracts the handwriting features, compares the extracted handwriting features with the original handwriting electronic signature, i.e. the sample handwriting, and decrypts the handwriting envelope if the comparison is successful, allowing the document content in the envelope to be viewed and processed; Signature handwriting verification: The receiving end obtains the electronic signature signed by the recipient in real time, extracts the signature handwriting features, and compares and analyzes it with the original handwriting electronic signature of the encrypted envelope, i.e. the retained handwriting sample. If the comparison is successful, the signing event is recorded and the signed document is generated and pushed to the delivery end simultaneously.

2. The method according to claim 1, characterized in that In handwriting envelope encryption, encryption utilizes the writer's writing habits and handwriting characteristics to convert the writer's handwriting into an electronic handwriting signature with personal characteristics through handwriting recognition, image processing and encryption algorithms, and associates the electronic handwriting signature with the envelope; the writing habits include pen speed, pen pressure, stroke sequence, and writing angle, which together constitute the biometric characteristics of the handwriting; the handwriting characteristics include the size, shape, inclination, and pressure distribution of the handwriting.

3. The method according to claim 1, characterized in that In handwriting envelope encryption, the recipient's signature information is configured, including but not limited to the signatory's name, fingerprint, seal, long text, confirmation word, time and / or additional information.

4. The method according to claim 1, characterized in that: In the handwriting envelope decryption, the receiving end parses the handwriting envelope to obtain the original handwriting electronic signature of the recipient, which means: parsing the information on the handwriting envelope in the received electronic data packet, including the recipient and the handwriting used for encryption, and extracting the encrypted handwriting feature information to obtain the original sample handwriting.

5. The method according to claim 1, characterized in that The original handwriting electronic signature of the recipient is a unique digital signature generated based on a handwriting sample written in advance by the recipient, by extracting handwriting feature information. The original handwriting electronic signature is associated with the identity verification information of the recipient, and the identity verification information includes but is not limited to biometric features such as ID cards, fingerprints or facial recognition.

6. The method according to claim 1, characterized in that: When verifying the signature handwriting, the receiving end obtains the electronic signature of the recipient through the handwriting input device. During the signing process, the handwriting features of the signer are recorded and extracted, and handwriting recognition and image processing technology are used to detect the similarity between the retained handwriting and the electronic signature handwriting. If the verification fails, the recipient is prompted to re-sign or take other security measures to ensure the validity of the signature. If the verification is successful, the electronic signature is placed in the document signing position, the signing event is recorded, and the signed document is generated and pushed to the delivery end simultaneously.

7. The method according to any one of claims 1 to 6, characterized in that: After decrypting the handwriting envelope and before viewing the document, there is also a document viewing verification step, in which the recipient is subject to facial recognition verification. If the verification is passed, the document viewing permission is granted.

8. A system for electronic document delivery and remote signing based on handwriting envelope decryption, characterized in that: include: Handwriting envelope encryption module: configured to determine the documents to be delivered and signed at the sending end, configure the signature information of the recipient, generate a virtual envelope and load the documents to be delivered and signed into the envelope, obtain the original handwriting electronic signature of the recipient, that is, the sample handwriting as the key to unlock the document envelope, encrypt the document envelope, obtain the handwriting envelope, and send it to the receiving end; Handwriting envelope decryption module: configured to parse the handwriting envelope at the receiving end, obtain the original handwriting electronic signature of the recipient, collect the electronic signature signed by the recipient on the spot and extract the handwriting features, compare the handwriting features with the original handwriting electronic signature, i.e. the sample handwriting, and decrypt and open the handwriting envelope if the comparison is successful, allowing the document content in the envelope to be viewed and processed; Signature handwriting verification module: It is configured to obtain the electronic signature signed by the recipient in real time at the receiving end, extract the handwriting features of the signature, and compare and analyze it with the original handwriting electronic signature of the encrypted envelope, that is, the sample handwriting. If the comparison is successful, the signing event is recorded and the signed document is generated and pushed to the delivery end simultaneously.

9. The system according to claim 8, characterized in that: The encryption of the handwriting envelope encryption module utilizes the writer's writing habits and handwriting characteristics, and through handwriting recognition, image processing and encryption algorithms, converts the writer's handwriting into an electronic handwriting signature with personal characteristics, and binds the electronic handwriting signature to the envelope; the writing habits include pen speed, pen pressure, stroke sequence, and writing angle, which together constitute the biological characteristics of the handwriting; the handwriting characteristics include the size, shape, inclination, and pressure distribution of the handwriting.

10. The system according to claim 8, characterized in that In the handwriting envelope encryption module, the recipient's signature information is configured, including but not limited to the signatory's name, fingerprint, seal, long text, confirmation word, time and / or additional information.

11. The system according to claim 8, characterized in that In the handwriting envelope decryption module, the receiving end parses the handwriting envelope to obtain the original handwriting electronic signature of the recipient, which means: parsing the information on the handwriting envelope in the received electronic data packet, including the recipient and the handwriting used for encryption, and extracting the encrypted handwriting feature information to obtain the original sample handwriting.

12. The system according to claim 8, characterized in that The original handwriting electronic signature of the recipient is a unique digital signature generated based on a handwriting sample written in advance by the recipient, by extracting handwriting feature information. The original handwriting electronic signature is associated with the identity verification information of the recipient, and the identity verification information includes but is not limited to biometric features such as ID cards, fingerprints or facial recognition.

13. The system according to claim 8, characterized in that: The signature handwriting verification module obtains the electronic signature of the recipient through a handwriting input device at the receiving end. During the signing process, the handwriting features of the signer are recorded and extracted, and the similarity between the sample handwriting and the electronic signature handwriting is detected using handwriting recognition and image processing technology. If the verification fails, the recipient is prompted to re-sign or take other security measures to ensure the validity of the signature. If the verification is successful, the electronic signature is placed in the document signing position, the signing event is recorded, and a signed document is generated and pushed to the delivery end simultaneously.

14. The method according to any one of claims 8 to 13, characterized in that: It also includes a document viewing and verification module, which is configured to perform facial recognition verification on the recipient after decrypting the handwriting envelope and before viewing the document. If the verification is passed, the recipient will be allowed to view the document.

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