# Setting Keys and Certificates

When using SSL encrypted communication, IEEE802.1X authentication or IPSec encrypted communication, authentication settings are necessary for the user to check the public key for encryption, the private key for decryption and key information.
See the following according to your system environment and the options that you want to specify.
When creating and using a key and its certificate with this printer

| Displaying the [Key and Certificate Settings] Page in the Remote UI Newly Creating a Key and Its Certificate Newly create a key pair (the public key and private key) and its certificate. Checking a Certificate Confirm the contents of the certificate of a created key. Deleting a Key and Its Certificate Delete a created key and its certificate.

When using a key/certificate file created by a device other than this printer

| Displaying the [Key and Certificate Settings] Page in the Remote UI Installing a Key/Certificate File on the Printer Install a key/certificate file created by a device other than this printer on this printer. Registering a Key and Its Certificate in the Printer Register a key pair (the public key and private key) and its certificate in a key/certificate file installed on this printer so that you can use them in the printer. Checking a Certificate Confirm the contents of the certificate of a created key. Deleting a Key and Its Certificate Delete a created key and its certificate.

IMPORTANT
###### The number of key and certificate which you can create, register, or install You can create and register up to six "keys and certificates" (the total includes the one that is installed). Also, only one key and certificate file can be installed. If you cannot create, register or install them, delete unnecessary keys and certificates. ###### About a Key/Certificate File which can be installed on this printer The key generation algorithm is "RSA". You can only install files with the extensions ".P12" or ".PFX". The file format which you can register is a PKCS#12 file in DER (binary encoding) format.

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