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Methods and equipment for generating and authenticating digital signatures and digital signature system

A digital signature, equipment technology, applied in the field of communication

Inactive Publication Date: 2011-05-25
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a digital signature generation and verification method, device and system to solve the problems caused by using character strings as digital signatures in the prior art, and achieve more prominent digital signature effects

Method used

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  • Methods and equipment for generating and authenticating digital signatures and digital signature system
  • Methods and equipment for generating and authenticating digital signatures and digital signature system
  • Methods and equipment for generating and authenticating digital signatures and digital signature system

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] figure 1 It is a schematic flow chart of the generation method of the first embodiment of the present invention, including:

[0033] Step 11: Encrypt and / or encode text feature information and environment data to generate a character string;

[0034] Among them, the text feature information can be obtained in the following ways:

[...

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PUM

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Abstract

The invention provides methods and equipment for generating and authenticating digital signatures and a digital signature system. The method for generating digital signatures comprises the following steps: encrypting and / or coding text characteristic information and environmental data to generate character strings; coding the character strings with two-dimension codes to generate two-dimension code pictures; and using the two-dimension code pictures as digital signatures and sending the two-dimension code pictures together with the text to be sent. The method for authenticating digital signatures comprises the following steps: reducing the received two-dimension code pictures into the character strings through scanning; decrypting the character strings to obtain the environmental data and the text characteristic information; and checking the received text according to the text characteristic information. Compared with the prior art using the character strings as the digital signatures, the invention can realize more effective signature effect by using the two-dimension codes as the digital signatures.

Description

technical field [0001] The invention relates to communication technology, in particular to a digital signature generation and verification method, device and system. Background technique [0002] A digital signature is an alphanumeric string obtained by processing the message to be transmitted through a one-way function to authenticate the source of the message and verify whether the message has changed. [0003] Digital signatures can solve problems such as denial, forgery, tampering and impersonation. Specific requirements: the sender cannot deny the message signature sent afterwards, the receiver can verify the message signature sent by the sender, and the receiver cannot forge the sender's message signature , The receiver cannot partially tamper with the sender's message, and a certain user in the network cannot pretend to be another user as the sender or receiver. [0004] During the process of implementing the present invention, the inventor found at least the followi...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06K19/06H04L29/06
Inventor 贾宝军郭强郝芸霞
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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