LunaCryptokiException: function 'CrystokiConnect failed' returns 0x0 as non root user

I have used Luna SA with SDK for generating keypairs.

When am trying to list the keystore (as non root user) its throwing below exception. If I try as root user, it does list and works fine.

I have given read write permission to non root user.

keytool error: java.security.KeyStoreException: LUNA not found
java.security.KeyStoreException: LUNA not found

Caused by: com.safenetinc.luna.LunaCryptokiException: function 'CrystokiConnect failed' returns 0x0
        at com.safenetinc.luna.LunaCryptokiException.ThrowNew(LunaCryptokiException.java:)
        at com.safenetinc.luna.LunaAPI.Initialize(Native Method)
            at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

Any help, how can I list key stores as a non root user?

parent folder, where certificates resides to connect hsm for handshake and luna bin folder should have read and execute permission for non root users who are using the client.

Which I missed!