[Djigzo users] Warning: Java update and JCE unlimited strength policy files

Martijn Brinkers martijn at djigzo.com
Wed Apr 7 08:52:01 CEST 2010


Hi,

Today Ubuntu issued an update for OpenJDK (Java). If OpenJDK is updated 
it seems that the Ubuntu OpenJDK installer overwrites the JCE unlimited 
strength policy files. The Virtual Appliance will restore the JCE 
unlimited strength policy after a restart (from a backup copy) but this 
is not the case when Djigzo is manually installed using the .deb files 
on Ubuntu 8.04.
Newer releases of Ubuntu (and RedHat/CentOS) use an updated version of 
OpenJDK which no longer require the JCE unlimited strength policy files 
to be installed.

You can check whether the JCE unlimited strength policy is still in 
place after upgrading Java by opening Djigzo Web. If there is no warning 
about missing "JCE unlimited strength policy" then the policy is still 
in place. If not reinstall jce_policy-6.zip (like you did before).

In sum:


if using Ubuntu >= 9.04 or CentOS/RedHat 5.3/5.4 then you do NOT need to 
install "JCE unlimited strength policy files"

if using Djigzo Virtual Appliance a restart after upgrade of Java 
()openJDK) will automatically reinstall the "JCE unlimited strength 
policy files"

if using Ubuntu 8.04 the "JCE unlimited strength policy files" should be 
reinstalled after upgrading Java.

Newer releases of Ubuntu use an OpenJDK which no longer require the "JCE 
unlimited strength policy files". Once the new Long Term Release (LTS) 
of Ubuntu is released Djigzo will use by default the new LTS version.

Kind regards,

Martijn Brinkers

-- 
Djigzo open source email encryption



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