You need "Unlimited Jurisdiction File" - Java 6 http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html
Java 7: http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
Install instructions should work from this site (first google result for install jcepolicyfiles
: http://www.ngs.ac.uk/tools/jcepolicyfiles
Why? Because some ciphers (key lengths!) can't be exported to some countries.
Please check if you are not affected by USA Export Policy on Encryption: http://en.wikipedia.org/wiki/Export_of_cryptography_in_the_United_States
EDIT: Links above are for SUN/Oracle Java. OP is using IBM JVM and he needs this file:
http://www.ibm.com/developerworks/java/jdk/security/index.html