[Ovmsdev] TLS CA question

Mark Webb-Johnson mark at webb-johnson.net
Fri Mar 12 10:27:14 HKT 2021

P.S. Error code -174 seems to be 'NOT_COMPILED_IN’.

Regards, Mark.

> On 12 Mar 2021, at 9:56 AM, Mark Webb-Johnson <mark at webb-johnson.net> wrote:
> Craig,
> I get the same (with for-v3.3):
> W (2940) ssh: Couldn't initialize wolfSSL debugging, error -174: Unknown error code
> I guess it is just a warning. Probably some debugging config setting.
> But wifi, web and others work ok for me. Only problems I have with for-v3.3 branch are (a) the web dashboard modem status, and (b) the TLS certificate verification against api.openvehicles.com <http://api.openvehicles.com/>. I am working on both.
> Regards, Mark.
>> On 12 Mar 2021, at 9:46 AM, Craig Leres <leres at xse.com <mailto:leres at xse.com>> wrote:
>> On 3/10/21 11:23 PM, Stephen Casner wrote:
>>> Michael and anyone else who's game:
>>> I now have an updated mongoose-wolfssl branch ready to be tested.  The
>>> reason for the 90-second lockup mentioned in the previous post is a
>>> whole lot of math for a prime-number validation that's part of the
>>> Diffie-Hellman step.  It was actually 87 seconds for Mark's server and
>>> 28 seconds for Michael's due to differences in certificates.  That
>>> prime-number validation is required for FIPS compliance, which WolfSSL
>>> supports, but we don't need it.  I spent quite a while digging into
>>> this to find where the process was getting stuck.  Finally I got help
>>> from WolfSSL support suggesting a configuration option that avoids
>>> this extra check.
>>> So now I have an implementation using mongoose with wolfssl that
>>> connects successfully to both servers with a 3-4 second delay.  (I
>>> don't recall what the delay was for the MBEDTLS-based implementation.)
>>> I think the memory usage looks OK.  I still have not taken any steps
>>> to reduce any resources used by the MBEDTLS code as accessed for other
>>> purposes.
>>> Included in the debugging was another version update on the Wolf code
>>> to wolfssh 1.4.6 and wolfssl 4.7.0.
>> I tried building/booting this on my dev module( 3.2.016-66-g93e0cf3e); but for some time now the for-v3.3 branch has been broken for me. When the module first boots the web gui works long enough for me to login and then it times out. From that point on I can't get the web gui or ssh to respond. It will return pings. The serial console is fine (and that's how I switch back to build based on master).
>> I just did a fresh reboot and captured the serial console output and noticed this:
>>    W (4484) ssh: Couldn't initialize wolfSSL debugging, error -174: Unknown error code
>> I think it happened around the time I lost wifi connectivity.
>> My sdkconfig is close to support/sdkconfig.default.hw31, I have CONFIG_SPIRAM_CACHE_WORKAROUND turned off along with a lot of vehicles.
>> 		Craig
>> _______________________________________________
>> OvmsDev mailing list
>> OvmsDev at lists.openvehicles.com <mailto:OvmsDev at lists.openvehicles.com>
>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev

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