Authorization controlled electronic signature method based on elliptical curve

An electronic signature and elliptic curve technology, which is applied in electrical components, electrical digital data processing, digital data authentication, etc., can solve the problem that the control of the use of signature power cannot be realized, the signature power of the agent cannot be controlled, and the integrity of the document cannot be guaranteed, etc. problem, to achieve the effect of ensuring authenticity, good identification, and easy management

Inactive Publication Date: 2008-11-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent application with application number 03123791.6 "A Method for Signing and Authentication of Electronic Documents with Electronic Official Seal" utilizes electronic official seals composed of signature official seals and printed official seals, and distributes them through mobile storage devices and secure channels to realize authorized electronic signatures. function, but this method not only has security risks in the distribution process, but cannot control the use of signature power, and is only applicable to the field of electronic official documents, and its application range is very narrow
The patent application with the application number 200410052864.4 "Centralized Management of Signature and Entrusted Authorization Electronic Signature Security Method" entrusts all the signature power to a trusted OA system to realize the entrusted authorization operation of signature power. This method is specific to the OA system , adopt a centralized management system of signatures and seals, and realize entrusted authorization operations, so it can only be applied to trusted OA systems, and the application area is very narrow
In addition, there are many security problems in this method, such as the signature can be forged, the integrity of the document cannot be guaranteed, the signature power of the agent cannot be controlled, and the principal and agent can deny each other.

Method used

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  • Authorization controlled electronic signature method based on elliptical curve

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with examples, but these examples should not be construed as limiting the present invention.

[0062] Randomly select a 192-bit large prime number p, the elliptic curve E(GF(p)):y 2 =x 3 +ax+b(mod p) is a secure elliptic curve defined on the finite field GF(p), on which the base point randomly selected is G=(x, y), and the order of the elliptic curve E is n=#E( GF(p)), r is a large prime factor of n.

[0063] in,

[0064] p=6277101735386680763835789423207666416083908700390324961279

[0065] a=592616546630905635115220920655548752905575269097021663719

[0066] b=4804233895280899388319973107961190048453702796229268188014

[0067] n=165186887773333704311468142720121385129365739211127201127

[0068] r=165186887773333704311468142720121385129365739211127201127

[0069] x=767497456867608967492675205059054232203172713727662547906

[0070] y=773339505718536040565224929606618157393578012863049959916

[0...

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Abstract

This invention relates to controllable authorization electrical signature method based on ellipse curve, which comprises the following steps: a, determining system parameters based on ellipse curve; b, agent giving authorization; c, agent validating requires; d, agent processing electro signature power; e, receiving validated data message. The invention can realize the electrical signature safety and reliability.

Description

technical field [0001] The invention belongs to an electronic signature method in the field of network information security, in particular to a controllable authorized electronic signature method based on an elliptic curve. Background technique [0002] Electronic signature technology is one of the most basic technologies in various information-related fields such as e-commerce systems, e-government systems, information security systems, and network communication systems. It simulates the functions of handwritten signatures in real life. It not only has the capabilities of identity authentication, source identification, non-repudiation, and anti-counterfeiting, but also can perform integrity authentication on data messages, and can ensure the authenticity and security of data messages. , reliability and legality, so it is of great significance to ensure the normal operation of the information system. In many countries, including our country, electronic signatures have been ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F21/00G06F1/00H04L9/00G06F21/31
Inventor周祖德肖攸安李方敏刘泉
OwnerWUHAN UNIV OF TECH