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RE: [lwip-devel] SSL for lwIP (new project?)

From: Zimman, Chris
Subject: RE: [lwip-devel] SSL for lwIP (new project?)
Date: Thu, 30 Jun 2005 16:30:20 -0400

Have you looked at OpenSSL?  It's used on tons of embedded platforms.
IMO, SSL doesn't really belong as part of the IP stack.


-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf
Of Brian White
Sent: Thursday, June 30, 2005 4:24 PM
To: lwIP Developers
Subject: [lwip-devel] SSL for lwIP (new project?)

I searched Google, but couldn't find any information on an SSL 
implementation for lwIP.

The one refernce I did find was that SSL was probably too big for most 
embedded systems.  Having written a proof-of-concept SSL implementation 
on a 20MHz 8032 and watched it take 5 minutes to do one-half of a 
diffie-hellman key exchange, I can tell you this is true for the very 
low end.

However, many modern embedded micros (such as the BlackFin) have 
sufficient power to do these computations in seconds instead of minutes 
and a light-weight SSL implementation is possible (and sometimes even 
required) for products based on such.

So, since Kadak wants $25,000 for their KwikNet SSL (plus $11,000 for 
basic TCP/IP), I'm looking to add SSL to the lwIP system.

Is there anybody out there interested in working on this with me?

If I can get some help implementing it, then we'll release the finished 
work under the same license as lwIP itself: free for everyone to use. 
If I have to do it all myself on company time, then it's pretty likely 
that my boss will tell me to keep it proprietary.

My qualifications:  I've written a complete TCP/IP implementation for 
our 8032-based product line, including IPsec, IKE, and SSL (the last two

being too slow to be practical).  However, I currently know zero about 
lwIP specifically.

Here's hoping! ...

                                  ( address@hidden )

      measure with micrometer, mark with chalk, cut with axe, hope like

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