The password of the file digital certificate is set when the certificate is exported. The certificate password stored in Usbkey is the pin code of usbkey.

CA center adopts digital certifiCAte authentication technology with digital encryption technology as the core. with digital certificate, ca center can encrypt, decrypt, digitally sign and authenticate all kinds of information transmitted on the internet, and at the same time, it can ensure that it is not invaded by criminals during digital transmission, or even if it is invaded, it can't view its contents.

Digital certificates are equivalent to social identity cards. Users can prove their identity and identify each other's identity through digital certificates when conducting e-commerce activities. CA center plays a key role in the application of digital certificates. As a third-party organization, it must be guaranteed to be authoritative and fair.

Extended information:

Before sending information, the sender needs to contact the receiver, and at the same time, the information is encrypted by using the public key. The information is always in a ciphertext state during the transmission, including the encrypted information after the receiver receives it, which ensures the singularity of information transmission. If the information is stolen or intercepted, the data can be interpreted only by using the private key of the receiver, but the data cannot be changed, which is also beneficial to guarantee. ?

The data signature of a digital certificate is similar to the encryption process. After the data is encrypted, only the receiver can open or change the data information, and then transmit it to the sender after adding its own signature. The private key of the receiver is unique and private, which also ensures the authenticity and reliability of the signature, thus ensuring the security of the information.

Baidu Encyclopedia-Digital Certificate