Hello All, sorry new here and haven't had time to lurk for a while to see the lie of the land. I'm trying to run Jxta on Jamvm 1.5.3 with Classpath 0.98. I'm getting an error because of jks security not being found. I'll post the error I'm getting at the end of this email. A bit of searching on the Internet gives me a few posts by somebody with a similar problem [1] & [2]. I can't find any responses and solutions to this problem. I'm not sure how to get around this issue. I'm sure that there are many implementations of this security algorithm and I wonder can a lump of code be added included into the JRE or can source code be added to classpath. I mean there could I, if I had a clue ;-) add the necessary code into classpath source? I'd prefer if I could pull in something like BouncyCastle, although I'm not sure it would solve the problem as I'm not sure it implements this functionality. I'm not great with Java I'm afraid so I'm not sure that a BounceyCastle could be used to implement functionality that is being requested of the JRE. Sorry for a newbie post and thanks a million for any advice that anybody can offer. [1] http://old.nabble.com/Problem-in-using-SSL-%28secure-socket%29-with-classpath-0.98-and-Jamvm-1.5.3-td23997596.html [2] http://www.mail-archive.com/classpath@xxxxxxx/msg15120.html Caused by: java.security.KeyStoreException: jks at java.security.KeyStore.getInstance(KeyStore.java:203) at java.security.KeyStore.getInstance(KeyStore.java:130) at net.jxta.impl.membership.pse.CMKeyStoreManager.<init>(CMKeyStoreManager.java:148) at net.jxta.impl.membership.pse.PSEKeyStoreManagerFactory$PSEKeyStoreManagerFactoryDefault.getInstance(PSEKeyStoreManagerFactory.java:143) ...24 more Caused by: java.security.NoSuchAlgorithmException: Algorithm [jks] of type [KeyStore] from provider [gnu.javax.security.auth.callback.GnuCallbacks: name=GNU-CALLBACKS version=2.1] is not found at gnu.java.security.Engine.getInstance(Engine.java:191) at gnu.java.security.Engine.getInstance(Engine.java:105) at java.security.KeyStore.getInstance(KeyStore.java:188) ...27 more