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Re: I/O Error: java.lang.RuntimeException: Could not generate DH keypair

From: Andreas Riddering <Andreas.Riddering@t-online.de>
Date: Thu, 10 Dec 2015 14:54:44 +0100
Message-ID: <CAE2bfVY2cMpTb49YnvMbsca38R5TkyuBrntK4KacFUZX8bQHNA@mail.gmail.com>
To: Eric-Christian Koch <eric.koch@sumcumo.com>
Cc: www-validator-css@w3.org
Hi Eric,

as you can see the validator is written in Java.
As you might know, you have secured your website quite good:
https://www.ssllabs.com/ssltest/analyze.html?d=dextra.ch

But as you can see there, Java simply can't connect to your site because of
the strong DH params or no other supported suite available. I don't know
which Java Version the validator is writen in, but try using 2048 Bit DH
params. That might help.

Another option would be to (maybe only temporarly) enable another ciper
suite, so Java can connect to your server...

You might have a look here:
https://www.ssllabs.com/ssltest/analyze.html?d=riddering.de&latest
As I am using Apache too, just kindly let me know, if i could help you with
the SSL settings. I could tell you the cipher suites i used...

Beste Grüße

2015-12-10 10:27 GMT+01:00 Eric-Christian Koch <eric.koch@sumcumo.com>:

> Hello
>
> I'm getting the following error:
>
> Target: https://www.dextra.ch
> I/O Error: java.lang.RuntimeException: Could not generate DH keypair
>
>
>
> Any idea why that could be?
>
>
> Best regards
> Eric
>
> --
> Eric-Christian Koch
> Mitglied der Geschäftsleitung, p.p.a.
>
> sum.cumo GmbH
> Office Hamburg
> Borsteler Bogen 27 B
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>
> Telefon +49.40.6094371-19
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> E-Mail  eric.koch@sumcumo.com
>
>
Received on Thursday, 10 December 2015 13:55:53 UTC

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