Electronic contract signing method and system

Abstract

The invention discloses an electronic contract signing method and system. The method comprises the steps that an electron contract uploaded by a contract initiating end is received, and a timestamp of the current moment and an initial local electronic signature set based on the electronic contract are added in the electronic contract; the electronic contract is transmitted to a contract signing end, the electronic contract returned by the contract signing end is received, and the electronic contract returned by the contract signing end includes the timestamp of the signing moment added by the contract signing end and a signing side electronic signature set based on the received electronic contract; and the timestamp of the current moment and a final local electronic signature set based on the electronic contract returned by the contract signing end are added in the electronic contract returned by the contract signing end so as to complete signing. Signing of the electronic contract is realized by the signing mode of the timestamp and the electronic signature, and time information included in the timestamp has irreversibility so that effectiveness and anti-falsification of the content and all the signatures of the electronic contract can be effectively guaranteed.

Description

technical field [0001] The present invention relates to the technical field of electronic contracts, and more specifically, to a method and system for signing electronic contracts. Background technique [0002] With the development of electronic technology, electronic contracts have emerged due to their convenient transmission and economical features. Although they also transmit information through electronic pulses, they no longer use a piece of paper as the original document, but only a set of electronic information. [0003] Generally, the content tamper-proof of electronic contracts can be guaranteed by digital signatures. Specifically, hash calculation is performed on the text of electronic contracts to obtain a text summary, and then the private key of the contract initiator is used to encrypt the text summary to generate a digital signature. Add the digital signature to the electronic contract; the recipient of the contract can use the public key of the contract initi...

AI Technical Summary

Problems solved by technology

However, the inventors found that in the above technical solution, only the tamper-proof modification of the content of the electronic contract can be realized, and the authenticity of the digital signature cannot be determined. Therefore, if the electronic contract is illegally tampered with, the digital signature is also illegally tampered with If not, the content verification purpose required by the digital signature cannot be achieved

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