> On Sep 12, 2016, at 4:08 PM, zy_chongqing via RT <r...@openssl.org> wrote:
> 
> SSL_CTX_use_certificate_file return 0, and the log show: error:140AB18F:SSL 
> routines:SSL_CTX_use_certificate:ee key too small
> 1. this programe is running well in one server, but failed in another. 
> actually these 2 servers is mirrow relationship. 2. I checked the pem file 
> (as attached), also is same on two servers3. I checked the error reason, but 
> cannot find any description about it in the website.I am almost crazy for 
> this issue, would you help to check what's the reason of this error for me? 
> thanks a lot!
> my OS: Linux version 3.7.10-1.1-desktop (geeko@buildhost) (gcc version 4.7.2 
> 20130108 [gcc-4_7-branch revision 195012] (SUSE Linux) ) #1 SMP PREEMPT Thu 
> Feb 28 15:06:29 UTC 2013 (82d3f21)OpenSSL version: OpenSSL 1.1.0  25 Aug 2016
> thanks & Regards!

Use stronger keys, see:

https://www.openssl.org/docs/manmaster/ssl/SSL_CTX_set_security_level.html

-- 
        Viktor.

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