Hi, I have a client certificate which has a "sha1RSA" signature algorithm. Server certificate has a "md5RSA" signature algorithm. When I try to run a SSL class to check the server certificate is trusted and also automates the import of a server certificate in the trust store used by web platform (using the keystore file) This exception is what i get... ERROR:Error initializing KeyStore! java.io.IOException: java.lang.NullPointerException There is not stack trace produced. Can the signature algorithm be the problem..... Can anyone give me an update to this... Thanks in advance,