com.helger.commons.system

Class CryptoPolicy

java.lang.Object

com.helger.commons.system.CryptoPolicy

@ThreadSafe
public final class CryptoPolicy
extends Object

Helper class to see if unlimited strength crypto is available. If it is not, then symmetric encryption algorithms are restricted to 128-bit key size or the encryption must provide key weakening or key escrow.

This program attempts to generate a 256-bit AES key and use it to do to a simple encryption. If the encryption succeeds, the assumption is that the JVM being used has the "unlimited" strength JCE jurisdiction policy files installed.

We use this for JUnit tests. If unlimited strength crypto is not available, we simply skip certain JUnit tests that would require it.

Based on owasp-esapi-java source.
http://code.google.com/p/owasp-esapi-java/

Author:

Philip Helger

Method Summary

Modifier and Type	Method and Description
static boolean	isUnlimitedStrengthCryptoAvailable() Check to see if unlimited strength crypto is available.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isUnlimitedStrengthCryptoAvailable

public static boolean isUnlimitedStrengthCryptoAvailable()

Check to see if unlimited strength crypto is available. There is an implicit assumption that the JCE jurisdiction policy files are not going to be changing while this given JVM is running.

Returns:

true if we can provide keys longer than 128 bits, false otherwise