1. Encryption of electronic data: The seal device is built with a set of key generation algorithm and encryption algorithm to encrypt digital signatures and signature files to generate ciphertext. Ciphertext contains the basic information of the document and the digital signature information of the signer, and has the functions of anti-tampering and anti-forgery.
2. Stamp making: The stamp making machine has a built-in stamp making module, and the digital signature is converted into a solid stamp by laser engraving or inkjet printing. The appearance of the seal can be customized, usually including company name, pattern, number and other information, which can be previewed and edited on the display screen of the seal device.