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Method and system for agent signature

A proxy signature and signer technology, applied in data processing applications, user identity/authority verification, business, etc., can solve the problems of difficult server non-repudiation and poor operability

Inactive Publication Date: 2007-10-10
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0024] In order to solve the shortcomings of poor operability in the prior art and the difficulty in realizing server non-repudiation in practice, the present invention provides a method and system for proxy signature

Method used

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  • Method and system for agent signature
  • Method and system for agent signature

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Embodiment Construction

[0064] The present invention will be further described below with reference to the accompanying drawings and examples, but it is not intended to limit the present invention.

[0065] The invention proposes a proxy signature method and system. The method and system are identity-based proxy signatures without specifying a proxy signer, have the characteristic of recoverable messages, and use it to construct a mobile proxy scheme.

[0066] In the identity-based signature system, the signer first obtains the signature private key corresponding to his identity from a trusted third party, the private key generator PKG. Then the signer generates the signature with the signature private key. Any verifier only needs to use the identity of the signature generator as the user's public key to verify the correctness of the signature, and does not need to verify the validity of the public key certificate to check the correctness of the signature.

[0067] The scheme of the present inventio...

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Abstract

The invention solves issues that disadvantages of poor operability and difficulty for implementing undeniable characteristic of server exist in current technique. The disclosed method for proxy signature includes steps: initializing system parameters; based on system parameters to generate private key of proxy signer; original signer generates proxy key of proxy signer; proxy signer generates proxy signature for message; validating proxy signature. The invention also discloses a system of proxy signature. The system includes module for initializing system parameters, private key generation module, proxy key generation module, proxy signature generation module, module for validating signature, and module for picking up Id of proxy signer. The invention satisfies undeniable characteristic of server, protects proxy signer, and the security is based on RSA.

Description

technical field [0001] The invention belongs to the field of e-commerce applications, in particular to a method and system for proxy signature. Background technique [0002] With the continuous acceleration of my country's informatization construction, the Internet as a national informatization infrastructure is becoming more and more perfect, and a platform supporting e-commerce applications has been formed. Therefore, the realization method of e-commerce has become a research hotspot. [0003] A mobile agent is an autonomous software entity. To some extent, a mobile agent can be regarded as a proxy signer to generate a signature on behalf of the original signer (an entity that needs a proxy). It can be applied to the field of e-commerce, and can be migrated between different operating environments on the Internet and run across platforms. Mobile agents can complete most of the problem-solving tasks without direct human intervention, and can perform tasks autonomously on ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32G06Q30/00
Inventor 曹珍富董晓蕾鲍海勇郑志彬位继伟
Owner SHANGHAI JIAO TONG UNIV
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