Electronic signature method

Abstract

An electronic-signing method includes obtaining file to be signed, obtaining signature information with signature time, generating digital abstract according to said file to be signed and said signature information or generating signature result according to said file to be signed and said signature information.

Description

technical field [0001] The invention relates to an electronic signature method, in particular to a visualized electronic signature method. Background technique [0002] The method of electronic signature in the prior art is as follows: firstly, the file is calculated according to the hash algorithm agreed by both parties to obtain a piece of code, that is, a digital digest. It is mathematically guaranteed that as long as any bit in the file is changed, the recalculated digital digest value will not match the original value; secondly, the digital digest value is encrypted with the sender's private key, and then together with the original The file is sent to the receiver together, and the generated digital digest is called a digital signature; finally, after receiving the digital signature, the receiver uses the same hash algorithm to calculate the digest value of the message, and then compares it with the sender's public key. The decrypted digital digest values ​​are compare...

AI Technical Summary

Problems solved by technology

[0004] In addition, in the above process, the electronic signature is not combined with the time

Because the time of the host where the electronic signature operation is located changes and can be changed at will, and is not unique, so it is impossible to know the real time of the electronic signature operation

Secondly, the above-mentioned electronic signature process does not take into account the location of the signature operation, so the signature does not change with the change of the signature location, and the result of the electronic signature is relative to different signature locations (or locations). They are all the same, so they do not have spatial uniqueness, and it is impossible to obtain the specific location information of the electronic signature operation

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