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

Abstract

The invention discloses a method for generating an electronic seal with a digital watermark. Performing by an electronic device, the invention relates to a method for generating a video. Obtaining a signature message abstract according to the file data related to the file and the mathematical function; for each image received by the video after the signature message abstract is obtained, the signature message abstract is extracted; generating signature trajectory data according to all the received trajectory information related to the signature trajectory of the signer before receiving the receiving time of the image; and the electronic device receives the signature track data and adds the signature track data into the image, and when the signature message abstract is obtained, the electronic device adds a digital watermark comprising the signature message abstract into the video so as to generate an electronic signature comprising the video. In addition, the invention further providesan electronic signature verification method and an electronic device.

Description

technical field [0001] The invention relates to a method for checking data legality, verification or signature, in particular to a method for generating and verifying an electronic signature with a digital watermark and an electronic device. Background technique [0002] In order to improve the inconvenience of applying for electronic certificates for traditional electronic signatures, and the distrust of the general public who are accustomed to physical signatures for the garbled codes in the electronic certificates, the electronic signature method with anti-counterfeiting function of Taiwan Patent No. I493380 , by combining the signature of the writing action image and the handwriting trace, it is confirmed that the aforementioned signature is indeed from the expected signer, and then the purpose of authenticating the identity is achieved and the reliability is improved in a simple way. [0003] However, when the system authenticates a signature that combines the writing a...

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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