Prove entity identity and provide network security.

1. Entity certificate: Also called a hard certificate, it exists in the form of physical media, such as USBKey and other hardware devices. The entity certificate stores the digital certificate in a dedicated hardware device, which has high security. , once the certificate is stored in the hardware device, it is firmly encapsulated and cannot be easily copied or tampered with.

2. Soft certificate: Also called a digital certificate or electronic certificate, it exists in the form of an electronic file, usually stored in the user's portable device, such as a computer or mobile device, in XML format. The soft certificate contains A specific unique identifier (UUID) of a person or entity of a private key, which is used to identify users, encrypt data, verify the source of information, and protect the security of online transactions. When users conduct online activities, soft certificates can be used to confirm the identity of the other party. , and ensure that the transmitted data will not be accessed or tampered with without authorization. Soft certificates are convenient and cost-effective, but they also have certain security risks. If users are not forced to set a password for the certificate, other people can log in to the same certificate. It can be used directly on a computer.