How to fix “Encryption credentials have expired” on xerox b215

Looks like I have new hobby  donated by xerox (if you can avoid greedy lying xerox, do it) – fixing my printer.
This time it just suddenly stopped to work with message “Encryption credentials have expired”. Previously I saw an option ‘Create new certificate’ on printer’s web page and my assumption was that probably certificate installed on printer was expired. At least I faced with that issues on embedded hardware like BMC’s many times, I tried to click on ‘Create new certificate’ button but it didn’t helped.
Let’s say thank you to xerox engineers and launch wireshark to figure out what happened. When I tried to resume print queue I saw communication on port 631 (IPP), which I able to decode as TLS in wireshark. openssl s_client shown expired certificate. Here is no option to uppload own key and certificate, but here is an option to downloads certificate signing request under Properties->Security->Machine Digital Certificate. So, I just created CA certificate:

$ openssl req -x509 -sha256 -days 3650 -newkey rsa:2048 -keyout rootCA.key -out rootCA.crt

Signed it using the next config:

$ cat > ./printer.conf << EOF
subjectAltName = @alt_names
DNS.1 = printer
DNS.2 = printer.local
IP.1 =
$ openssl x509 -req -CA rootCA.crt -CAkey rootCA.key -in PRINTER_request_sslCertificate.pem -out printer.crt -days 3649 -CAcreateserial -extfile printer.conf

And uploaded to printer.
Bonus point for SAN.

6 comments on “How to fix “Encryption credentials have expired” on xerox b215

  • Dan Webster says:

    Ahhhh crapper, but then it prompts me for the password for the printer…which I no longer know…not 1111, not the serial number…shiiiiiit.

    • Ivan says:

      By default password is serial number.
      If not, you can reset it via maintenance mode, but password for it is 1931 instead of 1111.
      1934, at least for b215

  • Dan Webster says:

    Guess it is cert expiration time, as mine just stopped working too on a Xero B210! Tried to follow your directions, but got a “PRINTER_request_sslCertificate.pem: No such file or directory” error. Thoughts?

    Using an Apple computer, if that matters. Appreciate any ideas.


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