You can store and update modem credentials, such as keys or certificates, manually by sending Credential storage management %CMNG commands to the modem. The Certificate Manager tab simplifies this process by offering a graphical user interface for updating credentials.
Before you can update the credentials stored by the modem, you must put the modem into the offline state by sending the AT+CFUN=4 AT command.
Each set of keys and certificates that is stored in the modem is identified by a security tag. This means that all related credentials share the same security tag. Send the AT%CMNG=1 command in the terminal view to display a list of all certificates that are stored on your device. If you have added your device in nRF Cloud, you should have generated the following credentials:
- Certificate Authority (CA) certificate
- Client certificate
- Private key with security tag
16842753, which is the security tag for nRF Connect for Cloud credentials.
These credentials can be managed in Certificate Manager in the dedicated fields.