Invalid length for custom cert ???

[KG4ZOW]

As a work-around for this issue I am trying to load the CACert root CA certificate into a Polycom 331 using a config file. The phone has BootROM 4.3.1.0440 and SIP 3.2.6.0314. I can see in the phone's syslogs and the server's FTP logs that the phone is loading the config file with the certificate, but when the phone tries to process the file, it throws the following error into the logs:

Jun 23 20:44:54 192.168.169.203 192.168.169.203 000040.282|so   |4|00|[cert]: invalid length 2049 for custom cert

The config file itself looks like this:

<?xml version="1.0" standalone="yes"?>
<certificate
	device.set="1"
	device.sec.SSL.certList.set="1"
	device.sec.SSL.certList="all"
	device.sec.SSL.customCert.set="1"
	device.sec.SSL.customCert="-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----" />

I've seen various articles on the internet which say any or all of the following: (1) this should work, (2) I need to remove the header and footer lines, as well as all other whitespace (so that it says customCert="MIIH...O3ig==" as one long string), or (3) the customCert attribute's value should be a filename which the phone will retrieve from the FTP server. I've tried #1 and #2, both result in the "invalid length" error. I haven't tried #3 yet, but that will be next.

Can anybody provide a KNOWN WORKING EXAMPLE of how to pre-load a custom CA certificate using a config file, or some more information about what this "invalid length" error actually means?

[KG4ZOW]

Just tried #3, it results in the same error message (with a shorter legnth).

The config file:

<?xml version="1.0" standalone="yes"?>
<certificate
	device.set="1"
	device.sec.SSL.certList.set="1"
	device.sec.SSL.certList="all"
	device.sec.SSL.customCert.set="1"
	device.sec.SSL.customCert="cacert.class3.crt" />

The log message:

Jun 23 20:59:01 192.168.169.203 192.168.169.203 000040.858|so   |4|00|[cert]: invalid length 17 for custom cert

Obviously, a filename doesn't work here...

[SteffenBaierUK]

Hello KG4ZOW,

welcome to the Polycom Community.

The Certificate should be in one line without any carriage return / line  feed and should not contain any header or end (begin / end)

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services