# Purpose

I wanted to install a certificate generated by Let's encrypt on my brand new laser printer 
(HP Laserjet MFJ 4302) for the integrated administration webserver.
After research on the web, I discovered 

# Arguments

positional arguments:
  {csr,pem}             command help
    csr                 Create CSR
    pem                 Install certificate

options:
  -h, --help            show this help message and exit
  -d, --debug           Activate debug.
  -c, --config CONFIG_FILENAME
                        Configuration file.
  -u, --user USERNAME   Username.
  -p, --password [PASSWORD]
                        Password.
  -H, --host HOSTNAME   Hostname.
  -n, --no-tls-verification
                        Verify certificate validity.


# How to use it ?

To obtain a CSR:
```
./refresh-certificate.py  -c ./config.ini -n -p PASSWORD csr
```

To obtain a PEM certificate from Let's encrypt:
```
certbot certonly --webroot -w /var/www/letsencrypt/ --csr printer.csr
```

To install the PEM file on the printer:
```
./refresh-certificate.py  -c ./config.ini -n -p PASSWORD pem 
```