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Electronic signature method and system based on dynamic password

A technology of dynamic password and electronic signature, which is applied in the direction of transmission system, digital transmission system, usage of multiple keys/algorithms, etc. It can solve problems such as the inability to use electronic file signatures, and the inability to support online RSA and SM2 signatures.

Active Publication Date: 2022-04-15
CHINA CITIC BANK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because OTP is an offline calculation and does not support online RSA and SM2 signatures, a large number of bank users who have received dynamic tokens cannot use electronic file signatures

Method used

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  • Electronic signature method and system based on dynamic password
  • Electronic signature method and system based on dynamic password

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0047] The embodiment of this application provides a dynamic password-based electronic signature method, such asfigure 1 As shown, the method may include the following steps:

[0048] Step S101, the server receives the first electronic signature request sent by the client, and the first electronic signature request includes dynamic password information and documents to be signed;

[0049] Step S102, the server performs target user identity authentication based on the dynamic password information;

[0050] Step S103, when the identity authentication of the target user passes, the server sends a second signature request to the CA signature system, and the second signature request includes the dynamic password information and the file to be signed; The seal system is used to generate an event key pair when receiving the second signature request, and the event key pair includes a first private key and a first public key; A private key performs private key calculation on the file ...

Embodiment 2

[0076] figure 2 An electronic signature system based on a dynamic password is provided for the embodiment of this application, wherein the electronic signature system based on a dynamic password includes: a client 201, a server 202, and a CA institution signature system 203; including:

[0077] The client 201 sends a first signature request to the server 202;

[0078] The server 202 receives the first electronic signature request sent by the client 201, and the first electronic signature request includes dynamic password information and a document to be signed;

[0079] The server 202 performs target user identity authentication based on the dynamic password information;

[0080] When the target user identity authentication is passed, the server 202 sends a second signature request to the CA signature system, and the second signature request includes the dynamic password information and the file to be signed;

[0081] The CA organization signature system 203 is used to gene...

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PUM

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Abstract

This application provides an electronic signature method and system based on a dynamic password, which are applied in the field of electronic signature technology, wherein the method includes: the server receives the first electronic signature request sent by the client, and the first electronic signature request The signature request includes dynamic password information and a document to be signed; the server performs target user identity authentication based on the dynamic password information; when the target user identity authentication is passed, the server sends a second signature request to the CA signature system , the second signature request includes the dynamic password information and the document to be signed; the CA organization signature system is used for generating. That is to say, the problem of how to realize the signing of documents to be signed based on the dynamic password is solved, and at the same time, the identity authentication mechanism based on the dynamic password ensures the authenticity of the signer's identity.

Description

technical field [0001] The present application relates to the technical field of electronic signatures, and in particular, the present application relates to a dynamic password-based electronic signature method and system. Background technique [0002] Electronic signature is a form of electronic signature. As a form of signature replacing traditional paper signature, electronic signature has been widely used. Dynamic Token (OTP for short) is an unpredictable combination of random numbers generated according to a specific algorithm. A dynamic password is randomly generated every predetermined time. Each password can only be used once. Generally, financial institutions use OTP through users at the counter as Subsequent authentication of the terminal device. However, because OTP belongs to offline calculation and does not support online RSA and SM2 signatures, a large number of users who have received dynamic tokens in banks cannot use electronic file signatures. Contents o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/40H04L9/32H04L9/14H04L9/08
CPCH04L63/0846H04L63/0823H04L9/3228H04L9/3247H04L9/3263H04L9/083H04L9/14
Inventor 刘伟韡孙炎森徐晓剑穆庆新陈卓李玲
Owner CHINA CITIC BANK