The encryption principle of handheld inkjet printer is to ensure the confidentiality and integrity of inkjet printer data through hardware encryption technology. Specifically, hand-held inkjet printers usually include an encryption chip for storing and processing inkjet printer data. In the process of code spraying, the encryption chip will encrypt the data of the code spraying machine to ensure that the data will not be tampered with or leaked. There are many ways to realize the encryption principle of hand-held inkjet printer, and one of the common ways is to use digital signature technology. Digital signature technology can ensure the authenticity and integrity of data, and can verify the source and destination of data. Digital signature algorithms used by hand-held inkjet printers usually include RSA, DSA and other algorithms.
The encryption principle of hand-held inkjet printer also needs to consider the balance between security and ease of use. In order to improve the security, we can use a variety of encryption technologies, such as symmetric encryption and asymmetric encryption, and the security design of encryption chips and algorithms.