Ambari server start up problem

I get following exception while trying to start ambari server -

AbstractLifeCycle:204 – FAILED SslContextFactory@7b342572(/var/lib/ambari-server/keys/keystore.p12,
/var/lib/ambari-server/keys/keystore.p12): java.io.IOException: DerInputStream.getLength(): lengthTag=127, too big.
java.io.IOException: DerInputStream.getLength(): lengthTag=127, too big.