mosquitto-users team mailing list archive

[Roger Light <roger@xxxxxxxxxx>]

Hi David,

It is worth noting that PolarSSL has a FOSS exception that covers other
licenses than GPL: https://polarssl.org/foss-license-exception

Cheers,

Roger



On Mon, Mar 3, 2014 at 9:00 PM, David Reid <david.reid@xxxxxxxxxxxxxxxxxx>wrote:

> Thanks Roger.  I have tried about 4 different packages thus far trying to
> figure out the least evil approach.  One thing I know for sure, OpenSSL was
> not written for bare-metal non-OS usage on something like an ARM Cortex
> M3.  I have spent almost a full day trying to get it compiled as a library
> using IAR for the M3 and I am still nowhere close.  I have given up on
> trying to get OpenSSL working for me.  Crazy.  So I am now looking at
> something like PolarSSL, MatrixSSL, or CycloneSSL, unless somebody has a
> better solution I should look at.  Since the project will not support GPL
> licensing, I guess I will be looking for commercial licenses and see what
> is the best fit overall.
>
>
>
> And so begins the fun of another week…
>
>
>
> *From:* rogerlight@xxxxxxxxx [mailto:rogerlight@xxxxxxxxx] *On Behalf Of *Roger
> Light
> *Sent:* Monday, March 03, 2014 2:43 PM
> *To:* david.reid@xxxxxxxxxxxxxxxxxx
> *Cc:* mosquitto-users@xxxxxxxxxxxxxxxxxxx
> *Subject:* Re: [Mosquitto-users] Mosquitto SSL options for embedded
> targets
>
>
>
> Hi David,
>
> You're not wrong, it only uses openssl at the moment. In theory if you
> compile without TLS-PSK support it should be quite straightforward to use
> another SSL library that has an openssl compatibility layer. It's not doing
> anything particularly unusual. I haven't tried to do it though, so can't
> promise anything.
>
>
>
> Best of luck getting it working!
>
> Cheers,
>
> Roger
>
>
>
> On Fri, Feb 28, 2014 at 5:49 PM, David Reid <david.reid@xxxxxxxxxxxxxxxxxx>
> wrote:
>
> All,
>
>
>
> Using Mosquitto v1.2.3 along with lwIP v1.4.1 and FreeRTOS v8.0.0 on an
> ARM Cortex M3.  I am trying to add SSL to the mix, and it would seem that
> Mosquitto is designed for OpenSSL interface only.  Am I wrong?
>
>
>
> Just wondering if any other users have successfully gotten SSL working
> with Mosquitto using something else besides OpenSSL?  Or if they have
> OpenSSL with Mosquitto working on a platform similar to mine, what is the
> resulting compiled output size and the amount of work?
>
>
>
> I am using an IAR compiler and my license will let me create up to 256K,
> but I am seeing reports via Google searches of 1MB output when compiling
> OpenSSL, which might work on a PC, but definitely not on my target.  Should
> be able to prune that hopefully, have not tried yet.  I do not mind
> switching to a commercial product/license for another SSL library if
> necessary, provided it will work nicely with Mosquitto.
>
>
>
> I am trying to judge the amount of effort and if it is even possible to
> get SSL on Mosquitto in my M3 project.  Anybody else out there done this on
> a M3?  If so, do you mind sharing how, library used,  and any other details
> that you could?
>
>
>
> Thanks.
>
>
>
> Regards,
>
> Dave
>
>
>
>
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