Method, system and equipment for realizing electronic seal
An electronic seal and watermark information technology, applied in the field of mobile communication, can solve the problem that it is difficult for users to realize the electronic seal function on mobile terminals, and achieve the effect of improving flexibility and expanding application fields.
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[0028] A generating module, configured to generate an electronic seal according to the obtained digital signature and the pre-stored electronic seal image;
[0029] a sending module, configured to send the electronic seal to a server, and instruct the server to add the electronic seal to the file;
[0030] The verification module is used to upload the file adding the electronic seal to the server, instructing the server to extract the electronic seal from the file adding the electronic seal; downloading the electronic seal and removing the file from the server; The content of the file of the electronic seal generates the second standard message digest; extracts the watermark information from the downloaded electronic seal by watermark technology; decrypts the watermark information according to the public key to obtain a message digest to be verified; The second standard message digest is matched with the message digest to be verified, and if the match is successful, it is dete...
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