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

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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=3Ddextra.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=3Driddering.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 Gr=C3=BC=C3=9Fe

2015-12-10 10:27 GMT+01:00 Eric-Christian Koch <[email protected]>:

> 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 Gesch=C3=A4ftsleitung, p.p.a.
>
> sum.cumo GmbH
> Office Hamburg
> Borsteler Bogen 27 B
> 22453 Hamburg
>
> Telefon +49.40.6094371-19
> Telefax +49.40.6094371-34
> E-Mail  [email protected]
>
>

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<div dir=3D"ltr"><div><div><div><div><div>Hi Eric,<br><br></div>as you can =
see the validator is written in Java.<br></div>As you might know, you have =
secured your website quite good: <a href=3D"https://www.ssllabs.com/ssltest=
/analyze.html?d=3Ddextra.ch" target=3D"_blank">https://www.ssllabs.com/sslt=
est/analyze.html?d=3Ddextra.ch</a><br><br></div>But
 as you can see there, Java simply can&#39;t connect to your site because o=
f
 the strong DH params or no other supported suite available. I don&#39;t=20
know which Java Version the validator is writen in, but try using 2048=20
Bit DH params. That might help.<br></div><br></div>Another option would be =
to (maybe only temporarly) enable another ciper suite, so Java can connect =
to your server...<br><div><br></div><div>You might have a look here: <a hre=
f=3D"https://www.ssllabs.com/ssltest/analyze.html?d=3Driddering.de&amp;late=
st" target=3D"_blank">https://www.ssllabs.com/ssltest/analyze.html?d=3Dridd=
ering.de&amp;latest</a><br></div><div>As
 I am using Apache too, just kindly let me know, if i could help you=20
with the SSL settings. I could tell you the cipher suites i used...<br></di=
v><div><br></div>Beste Gr=C3=BC=C3=9Fe</div><div class=3D"gmail_extra"><br>=
<div class=3D"gmail_quote">2015-12-10 10:27 GMT+01:00 Eric-Christian Koch <=
span dir=3D"ltr">&lt;<a href=3D"mailto:[email protected]" target=3D"_bl=
ank">[email protected]</a>&gt;</span>:<br><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex=
">
 =20

   =20
 =20
  <div bgcolor=3D"#FFFFFF" text=3D"#000000">
   =20
    Hello<br>
    <br>
    I&#39;m getting the following error:<br>
    <br>
   =20
    <blockquote type=3D"cite">Target: <a href=3D"https://www.dextra.ch" tar=
get=3D"_blank">https://www.dextra.ch</a><br>
      I/O Error: java.lang.RuntimeException: Could not generate DH
      keypair<br>
    </blockquote>
    <br>
    <br>
    Any idea why that could be?<br>
    <br>
    <br>
    Best regards<span class=3D"HOEnZb"><font color=3D"#888888"><br>
    Eric<br>
    <pre cols=3D"72">--=20
Eric-Christian Koch
Mitglied der Gesch=C3=A4ftsleitung, p.p.a.

sum.cumo GmbH
Office Hamburg
Borsteler Bogen 27 B
22453 Hamburg

Telefon <a href=3D"tel:%2B49.40.6094371-19" value=3D"+4940609437119" target=
=3D"_blank">+49.40.6094371-19</a>
Telefax <a href=3D"tel:%2B49.40.6094371-34" value=3D"+4940609437134" target=
=3D"_blank">+49.40.6094371-34</a>
E-Mail  <a href=3D"mailto:[email protected]" target=3D"_blank">eric.koc=
[email protected]</a></pre>
  </font></span></div>

</blockquote></div><br></div>

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