CN116611082A - A File Electronic Signature Algorithm That Can Improve the Security of Electronic Signature - Google Patents

Abstract

The invention discloses a file electronic signature algorithm capable of improving the security of electronic signature, which relates to the technical field of electronic signature and comprises the following steps: (1) uploading an electronic signature image; (2) electronic signature image segmentation; (3) encrypting the electronic signature image; (4) invoking decryption of the electronic signature image; (5) checking the electronic signature image; (6) generating an electronic signature; (7) And (8) executing the electronic signature and distinguishing the electronic signature. The file electronic signature algorithm capable of improving the security of the electronic signature has the advantages that the decryption structure is more complex and the decryption difficulty is higher through different encryption forms, the decrypted electronic signature image can be checked later, the correctness of the electronic signature image is ensured, signature data are added in the process of generating and executing the electronic signature provided with signature information, the electronic signature is not easy to be stolen, and the electronic signature is beneficial to realizing independent and controllable information security and is safe and reliable.

Description

A File Electronic Signature Algorithm That Can Improve the Security of Electronic Signature

technical field

The invention relates to the technical field of electronic signatures, in particular to a file electronic signature algorithm capable of improving the security of electronic signatures.

Background technique

Electronic signatures generally refer to all electronic documents that exist in electronic form, are attached to electronic documents and are logically associated with them, and can be used to identify the identity of the signer of the electronic document, ensure the integrity of the document, and indicate that the signer agrees with the facts stated in the electronic document. Electronic signature is a form of expression of electronic signature. It uses image processing technology to convert electronic signature operation into the same visual effect as paper document sealing operation. At the same time, electronic signature technology is used to ensure the authenticity and integrity of electronic information and Non-repudiation of the signer.

The existing documentable electronic signature algorithm, in the process of being applied to the blockchain, is easy to be cracked through encryption and decryption through a single key pair, and the security is insufficient.

Therefore, in view of this, researches and improvements are made to the existing structure and defects, and a document electronic signature algorithm that can improve the security of electronic signatures is proposed.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a file electronic signature algorithm that can improve the security of the electronic signature, and solves the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention is achieved through the following technical solutions, a file electronic signature algorithm that can improve the security of electronic signatures, and the document electronic signature algorithm that can improve the security of electronic signatures includes the following specific steps:

(1) Electronic signature image upload

Scan and read the original seal image, obtain the electronic signature image, bind the electronic signature image to the digital certificate, and then the blockchain user uploads the user's personal seal image, public key and some personal identity information to the blockchain certification center , so that the blockchain certification center can verify the identity of the user, and after the identity verification, the corresponding seal number will be assigned to the seal image sent by the user, and the blockchain user will generate its own key pair for the electronic signature;

(2), electronic signature image segmentation

The signature system of the blockchain divides the electronic signature image into several pixel images, and encodes each pixel image, and converts the encoded pixel image data into digital form and stores it in the database;

(3), electronic signature image encryption

Then, the access authority of the electronic signature image is encrypted by means of a verification code, and then the correct encoding sequence of the pixel image is encrypted by an encryption algorithm. Different encryption forms make the decryption structure more complex and more difficult to crack.

Further, the document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(4), Electronic signature image call decryption

By entering the verification code, the call authority of the pixel image data in digital form is obtained, and the encoded pixel image data is obtained after the call is converted, and then the encrypted correct encoding sequence is decrypted by the secret key of the encryption algorithm to obtain the correct The pixel image encoding string, according to the correct encoding sequence, can recombine several pixel images into a complete seal image, that is, the electronic signature image;

(5) Verification of the use of electronic signature images

After obtaining the decrypted electronic signature image, enter the signature number corresponding to the electronic signature image, and the blockchain signature system will verify the signature number stored in the background with the corresponding seal image to ensure that the electronic signature The image is correct.

Further, the document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(6), Electronic signature generation

Then the blockchain signature system uses the user's private key to encrypt the user's signature organization name, signature number, and signature time to obtain the signature data; then embed the signature data and digital certificate into the electronic signature in the form of a watermark In the stamp image, a complete electronic signature is generated.

Further, the document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(7) Execution of electronic signature

Add a signature field at the position to be signed in the electronic document file or PDF file, and the signature system inserts an electronic seal at the position of the signature field selected by the signature user in the electronic document file or PDF file to be signed, and the specified electronic Documents are electronically signed and sealed to generate signed documents.

Further, the document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(8), electronic signature identification

The recipient of the signature file verifies the information of the electronic signature through the public key to ensure that the electronic signature is consistent with the corresponding digital certificate, and prevents tampering through signature verification to improve security.

Further, in the process of uploading the electronic signature image in the step (1), the electronic signature generated from the original seal image must be unique and reliable.

Further, in the process of uploading the electronic signature image in the step (1), the block chain user generates his own key pair for the electronic signature, and the key pair of the electronic signature adopts the public key system, that is, a pair of The matching keys are used for encryption and decryption, and each user sets a specific private key owned only by himself for decryption and signature; at the same time, he sets a public key and discloses it to a group of users. Shared for encryption and verification of signatures.

Further, in the step (4) in the process of calling and decrypting the electronic signature image, the verification code input when obtaining the calling authority of the pixel image data in digital form can be a dynamic verification code or a mobile phone text message verification code of the electronic signature user , to prevent misappropriation.

The invention provides a document electronic signature algorithm that can improve the security of the electronic signature, and has the following beneficial effects: the document electronic signature algorithm that can improve the security of the electronic signature divides the electronic signature image into several pixels The image is encoded and stored. In the process of calling the signature later, on the one hand, it is necessary to enter the verification code to obtain the calling authority, and on the other hand, it needs to be decrypted to obtain the correct pixel image encoding string, so that several pixels can be processed in the correct encoding sequence. The image is recombined into a complete seal image, so the decryption structure is more complicated and difficult to crack through different encryption forms, and the decrypted electronic signature image can be verified later to ensure that the electronic signature image is correct. In the process of generating and executing the electronic signature with signature information, the signature data such as the signature number and the time of the signature are added, so that the electronic signature is not easy to be stolen, so it is beneficial to realize the independent control of information security. It is safe and reliable, ensuring the compliance and data security of the documents signed by users.

Description of drawings

FIG. 1 is a schematic diagram of the overall flow of a document electronic signature algorithm that can improve the security of electronic signatures according to the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them.

A file electronic signature algorithm capable of improving the security of electronic signatures, the file electronic signature algorithm capable of improving the security of electronic signatures comprises the following specific steps:

(1) Electronic signature image upload

Scan and read the original seal image, obtain the electronic signature image, bind the electronic signature image to the digital certificate, and then the blockchain user uploads the user's personal seal image, public key and some personal identity information to the blockchain certification center , so that the blockchain certification center can verify the identity of the user, and after the identity verification, the corresponding seal number will be assigned to the seal image sent by the user, and the blockchain user will generate its own key pair for the electronic signature;

(2), electronic signature image segmentation

The signature system of the blockchain divides the electronic signature image into several pixel images, and encodes each pixel image, and converts the encoded pixel image data into digital form and stores it in the database;

(3), electronic signature image encryption

Then, the access authority of the electronic signature image is encrypted by means of a verification code, and then the correct encoding sequence of the pixel image is encrypted by an encryption algorithm. Different encryption forms make the decryption structure more complex and more difficult to crack.

The document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(4), Electronic signature image call decryption

By entering the verification code, the call authority of the pixel image data in digital form is obtained, and the encoded pixel image data is obtained after the call is converted, and then the encrypted correct encoding sequence is decrypted by the secret key of the encryption algorithm to obtain the correct The pixel image encoding string, according to the correct encoding sequence, can recombine several pixel images into a complete seal image, that is, the electronic signature image;

(5) Verification of the use of electronic signature images

After obtaining the decrypted electronic signature image, enter the signature number corresponding to the electronic signature image, and the blockchain signature system will verify the signature number stored in the background with the corresponding seal image to ensure that the electronic signature The image is correct.

The document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(6), Electronic signature generation

Then the blockchain signature system uses the user's private key to encrypt the user's signature organization name, signature number, and signature time to obtain the signature data; then embed the signature data and digital certificate into the electronic signature in the form of a watermark In the stamp image, a complete electronic signature is generated.

The document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(7) Execution of electronic signature

Add a signature field at the position to be signed in the electronic document file or PDF file, and the signature system inserts an electronic seal at the position of the signature field selected by the signature user in the electronic document file or PDF file to be signed, and the specified electronic Documents are electronically signed and sealed to generate signed documents.

The document electronic signature algorithm that can improve the security of the electronic signature also includes the following specific steps:

(8), electronic signature identification

The recipient of the signature file verifies the information of the electronic signature through the public key to ensure that the electronic signature is consistent with the corresponding digital certificate, and prevents tampering through signature verification to improve security.

Step (1) During the uploading of the electronic signature image, the electronic signature generated from the original seal image must be unique and reliable.

Step (1) In the process of uploading the electronic signature image, the blockchain user generates its own key pair for the electronic signature. The key pair of the electronic signature adopts the public key system, that is, a pair of matching keys is used For encryption and decryption, each user sets a specific private key owned only by himself for decryption and signature; at the same time, he sets a public key and discloses it to a group of users for sharing. Encrypt and verify signatures.

Step (4) In the process of invoking and decrypting the electronic signature image, the verification code input when obtaining the calling authority of the pixel image data in digital form can be a dynamic verification code or a mobile phone SMS verification code of the electronic signature user to prevent embezzlement.

To sum up, the document electronic signature algorithm that can improve the security of the electronic signature, when used, the document electronic signature algorithm that can improve the security of the electronic signature includes the following specific steps:

(1) Electronic signature image upload: scan and read the original seal image to obtain the electronic signature image, the electronic signature generated by the original seal image must be unique and reliable, bind the electronic signature image to the digital certificate, Then the blockchain user uploads the user's personal seal image, public key and some personal identity information to the blockchain certification center, so that the blockchain certification center can verify the user's identity. The image is assigned the corresponding signature number, and the blockchain user generates its own key pair for the electronic signature. The key pair of the electronic signature adopts the public key system, that is, uses a pair of matching keys to encrypt, For decryption, each user sets a specific private key owned only by himself for decryption and signature; at the same time, he sets a public key and discloses it to a group of users for encryption and verification signature;

(2) Electronic signature image segmentation: the blockchain signature system divides the electronic signature image into several pixel images, encodes each pixel image, and converts the encoded pixel image data into digital form for storage in the database;

(3) Encryption of electronic signature images: Encrypt the access rights of electronic signature images through verification codes, and then encrypt the correct encoding sequence of pixel images through encryption algorithms. Different encryption forms make the decryption structure more complex. Complex and more difficult to crack;

(4) Decryption of electronic signature image call: by inputting the verification code, the call authority of the pixel image data in digital form is obtained, and the verification code entered when obtaining the call authority of the pixel image data in digital form can be a dynamic verification code Or the mobile phone SMS verification code of the electronic signature user to prevent embezzlement, call and convert to obtain the encoded pixel image data, and then use the secret key of the encryption algorithm to decrypt the encrypted correct encoding sequence to obtain the correct pixel image encoding string, several pixel images can be recombined into a complete seal image according to the correct coding sequence, that is, the electronic signature image;

(5) Electronic signature image use verification: After obtaining the decrypted electronic signature image, enter the signature number corresponding to the electronic signature image, and the blockchain signature system will compare the signature number stored in the background with the The corresponding seal image is verified to ensure that the electronic signature image is correct;

(6) Electronic signature generation: Then the blockchain signature system uses the user's private key to encrypt the user's signature agency name, signature number, and signature time to obtain the signature data; then the signature data, The digital certificate is embedded in the electronic signature image in the form of watermark to generate a complete electronic signature;

(7) Electronic signature execution: add a signature field at the position to be signed in the electronic document file or PDF file, and the signature system will sign the signature field position selected by the user in the electronic document file or PDF file to be signed Insert an electronic signature, implement an electronic signature on the specified electronic document, and generate a signed document;

(8) Electronic signature identification: The receiver of the signature document verifies the information of the electronic signature through the public key to ensure that the electronic signature is consistent with the corresponding digital certificate, and prevents tampering through signature verification to improve security.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (8)

1. The file electronic signature algorithm capable of improving the electronic signature safety is characterized by comprising the following specific steps of:

(1) Electronic signature image upload

Scanning and reading an original seal image to obtain an electronic signature image, binding the electronic signature image with a digital certificate, and uploading the individual seal image, a public key and part of individual identity information of a user to a blockchain authentication center by a blockchain user, so that the blockchain authentication center verifies the identity of the user, after verifying the identity, the blockchain user distributes a corresponding signature number for the seal image sent by the user, and then generates a key pair for the electronic signature;

(2) Electronic signature image segmentation

The signing system of the block chain divides the electronic signature image into a plurality of pixel images, encodes each pixel image, and converts encoded pixel image data into a digital form to be stored in a database;

(3) Electronic signature image encryption

Then, the acquisition authority of the electronic signature image is encrypted in a verification code mode, the correct coding sequence of the pixel image is encrypted through an encryption algorithm, and the decryption structure is more complex and the decryption difficulty is higher due to different encryption modes.

2. The electronic signature algorithm for documents with improved electronic signature security as recited in claim 1, wherein said electronic signature algorithm for documents with improved electronic signature security further comprises the following specific steps:

(4) Electronic signature image call decryption

Acquiring calling authority of digital pixel image data by inputting a verification code, calling and converting to obtain encoded pixel image data, decrypting the encrypted correct encoding sequence through a key of an encryption algorithm to obtain a correct pixel image encoding string, and recombining a plurality of pixel images into a complete seal image, namely an electronic signature image according to the correct encoding sequence;

(5) Electronic signature image use verification

After the decrypted electronic signature image is obtained, a signature number corresponding to the electronic signature image is input, and the signature number stored in the background and the corresponding seal image are checked by a signature system of the blockchain to ensure that the electronic signature image is correct.

3. The electronic signature algorithm for documents with improved electronic signature security as recited in claim 1, wherein said electronic signature algorithm for documents with improved electronic signature security further comprises the following specific steps:

(6) Electronic signature generation

Then the signing system of the blockchain carries out encryption operation on the signing mechanism name, the signing number and the signing time of the user by utilizing the private key of the user to obtain signature data; and embedding the signature data and the digital certificate into the electronic signature image in a watermark form to generate a complete electronic signature.

4. The electronic signature algorithm for documents with improved electronic signature security as recited in claim 1, wherein said electronic signature algorithm for documents with improved electronic signature security further comprises the following specific steps:

(7) Electronic signature execution

And adding a signature domain at a position to be signed of the electronic document file or the PDF file, inserting an electronic signature at the position of the signature domain selected by a signature user in the electronic document file or the PDF file to be signed by the signature system, and executing the electronic signature on the specified electronic file to generate a signature file.

5. The electronic signature algorithm for documents with improved electronic signature security as recited in claim 1, wherein said electronic signature algorithm for documents with improved electronic signature security further comprises the following specific steps:

(8) Electronic signature discrimination

The signature file receiver verifies the information of the electronic signature through the public key, ensures that the electronic signature is consistent with the corresponding digital certificate, prevents tamper through signature verification, and improves the safety.

6. The document electronic signature algorithm capable of improving electronic signature security as recited in claim 1, wherein: in the process of uploading the electronic signature image in the step (1), the electronic signature generated by the original seal image must have uniqueness and reliability.

7. The document electronic signature algorithm capable of improving electronic signature security as recited in claim 1, wherein: in the step (1) of uploading the electronic signature image, a blockchain user generates a key pair of the blockchain user aiming at the electronic signature, wherein the key pair of the electronic signature adopts a public key system, namely, encryption and decryption are carried out by utilizing a pair of mutually matched keys, and each user sets a specific private key only for the user to carry out decryption and signature; a public key is set and disclosed by the user, and is shared by a group of users and used for encrypting and verifying the signature.

8. The document electronic signature algorithm for improving the security of electronic signatures as set forth in claim 2 wherein: in the step (4), in the process of invoking and decrypting the electronic signature image, the verification code input when the invoking right of the pixel image data in a digital form is acquired can be a dynamic verification code or a mobile phone short message verification code of the electronic signature user, so that the theft is prevented.