Digital anti&minus forging method
First Claim
1. A digital anti-counterfeit method based on digital watermark technology, whose feature consists in embedding the digital signature or other anti-counterfeit information of the file into host medium, so as to realize such functions as anti-counterfeit and verification of various important files, business contracts, individual credentials, trademarks and barcodes, in physical form (print, paper, label, etc) and digital form (such formats as PDF, WORD and XML).
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Abstract
The present invention relates to a technique of digital anti-forging based on the digital watermarking, belonging to the field of image processing and information security. Using the technique of the digital watermarking can make digital signature or other information figurize. The present invention can combine with the existing certificate, handwriting signature, stamper and bar code, and make digital signature syncretize to digital or paper files in order to protect and prevent that important file, business contact, trademark and personal certificate are counterfeited, and it is a novel digital anti-forging solution.
50 Citations
12 Claims
- 1. A digital anti-counterfeit method based on digital watermark technology, whose feature consists in embedding the digital signature or other anti-counterfeit information of the file into host medium, so as to realize such functions as anti-counterfeit and verification of various important files, business contracts, individual credentials, trademarks and barcodes, in physical form (print, paper, label, etc) and digital form (such formats as PDF, WORD and XML).
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7. A digital anti-counterfeit method described according to claim of right 1, whose feature consists in its ability to realize digital anti-counterfeit function of ordinary seal and written signature through digital watermark and digital signature algorithm. Embed digital signature of the file into seal and written signature of the file through watermark algorithm, enabling files to have dual anti-counterfeit effect of both digital signature and seal (or written signature), and enabling files to still have legal effect of the original even after printing, copying and faxing.
Specification