Electronic signature generation and verification method and electronic device with digital watermark

Abstract

A method for generating an electronic signature with a digital watermark, executed by an electronic device, during a shooting period for generating a video, obtaining a summary of the signature message according to file data and mathematical functions related to the file, and obtaining a summary of the signature message for the video For each image received after the summary of the signature message, signature track data is generated according to all track messages related to the signer's signature track received before the reception time of the image, and the signature track data is converted into the signature track data. added to the image, and upon obtaining the signature message digest, the electronic device adds a digital watermark comprising the signature message digest to the video to generate an electronic signature comprising the video. In addition, the present invention also provides an electronic signature verification method and an electronic device.

Description

technical field [0001] The invention relates to a method for checking the legality of data, verifying or signing, in particular to a method and an electronic device for generating and verifying an electronic signature with a digital watermark. Background technique [0002] In order to improve the inconvenience of applying for electronic certificates for traditional electronic signatures, and the general public who are accustomed to physical signatures feel distrustful of electronic certificates in garbled keys, the electronic signature method with anti-counterfeiting function of Taiwan Patent No. I493380 , to combine the signature of the writing action image and the handwriting trajectory to confirm that the aforementioned signature is indeed from the expected signer, and then to achieve the purpose of identity authentication and improve reliability in a simple method. [0003] However, when the system authenticates the signature of the combination of the writing action imag...

AI Technical Summary

Problems solved by technology

[0003] However, when the system authenticates the signature that combines the writing action image and handwriting trace, since each signature has little difference, the interested person who has the signature of the user's writing action image and handwriting trace can use this dynamic image and the signer's handwritten signature When tracking different document data, the system cannot distinguish whether the signed content of the document data is the expected signer of the same document data or the expected signer of other documents

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