[openssl-users] [Newsletter] Re: Same openssl app behaves differently depending on platform

Carl Heyendal cheyendal at fortinet.com
Thu Jul 21 17:44:50 UTC 2016

Turned out to be optimization as you suggested. Once I turned it off the app connected on the embedded target.

Good one Steve. I had forgotten how optimization mucks things up from time to time.

/carl h.

-----Original Message-----
From: openssl-users [mailto:openssl-users-bounces at openssl.org] On Behalf Of Dr. Stephen Henson
Sent: July-21-16 10:34 AM
To: openssl-users at openssl.org
Subject: [Newsletter] Re: [openssl-users] Same openssl app behaves differently depending on platform

On Thu, Jul 21, 2016, Carl Heyendal wrote:

> I have an app that uses openssl to connect to a server on a different machine. In one case on my Ubuntu machine the app has no problem getting a secure connection. But when I recompile the same app for an embedded target board and run it I get this error:
> # ./client3
> Enter PEM pass phrase:
> connecting to
> ** client3.c:77 Error connecting SSL object 1024:error:04091068:rsa 
> routines:INT_RSA_VERIFY:bad signature:rsa_sign.c:278:
> 1024:error:1408D07B:SSL routines:ssl3_get_key_exchange:bad signature:s3_clnt.c:2004:
> The app uses the same private key and certificate in both cases.

It could be a compiler bug on the embedded platform. Does it pass "make test"?

Have you tried it with optimisation turned off?

Dr Stephen N. Henson. OpenSSL project core developer.
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