Electronic contract off-line signing method based on trusted third party

An electronic contract and trusted technology, applied in the field of information security, can solve the problems of high responsibility, high security requirements of trusted third parties, and it is difficult for trusted third parties to assume excessive security responsibilities, and achieve the effect of reducing requirements.

Active Publication Date: 2014-06-18
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has high requirements on the security of trusted third parties, and the responsibilities they need to bear are also great
In actual operation, trusted third parties are generally unwilling and difficult to assume excessive security responsibilities, which in turn affects users' concerns about the effectiveness of electronic contracts

Method used

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  • Electronic contract off-line signing method based on trusted third party
  • Electronic contract off-line signing method based on trusted third party
  • Electronic contract off-line signing method based on trusted third party

Examples

Experimental program
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Effect test

Embodiment Construction

[0037] People are worried about the security of electronic contracts, which restricts the rapid development of electronic contract applications. In order to reduce people's concerns about security, scientific and technological workers have done a lot of work in the fields of electronic signature and contract signing. At present, it is considered that the safer contracting mode is to build a secure contracting platform, and users upload electronic contract documents, and complete the whole process of signing on the secure contracting platform. But this model has a disadvantage: the security responsibility of the security signing platform is too heavy. If there is a problem with platform security, all contract signing work will be affected. In actual production and life, who will operate and maintain such an important platform is a headache. What is more difficult is: if there is a security problem on the platform, no one has the ability to bear the security responsibility for...

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PUM

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Abstract

The invention relates to an electronic contract off-line signing method based on a trusted third party. According to the electronic contract off-line signing method based on the trusted third party, an electronic signature digital certificate, a user private key and a contract proof public key are obtained from the trusted third party by a user; then, the Hash digest value of the electronic contract is calculated; the Hash digest value is subjected to encryption operation by the user private key and the proof public key; an encryption result is two strings of key sequences; finally, the key sequences and the digital certificate watermark of a signer are embedded into a signature picture; then signature picture embedded with the watermark is stamped to an electronic contract document. According to the electronic contract off-line signing method based on the trusted third party, which is disclosed by the invention, the requirement on the contract signing platform safety in the contract signing process can be favorably lowered, and the contract signing platform can finish the electronic contract signing process only by taking the responsibilities of approving and putting to the proof to the electronic signature without damaging the safety.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a method for offline and fair exchange of electronic signature information between two parties signing an electronic contract. Background technique [0002] With the rapid development of e-commerce, directly signing electronic contracts through the network, avoiding the trouble of signing, exchanging and saving paper contracts, has gradually become an attractive development direction in the field of e-commerce. The promulgation of "Electronic Signature Law" and "Contract Law" has laid a legal foundation for the development of electronic contracts in e-commerce. However, due to concerns about network security, users are still in the experimental stage of using electronic contracts, and must have a paper contract as the original and an electronic contract as a copy. [0003] At present, the signing of electronic contracts mainly depends on the electronic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32G06Q30/00
Inventor 吴震东
Owner HANGZHOU DIANZI UNIV
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