PGP Encryption issue

Dear Experts,

I am working on file to file (FTP)scenario using PGP encryption.

i need to encrypt the file using SHA1 algorithm.

i  followed the below links.

http://scn.sap.com/community/pi-and-soa-middleware/blog/2012/04/10/pgpencryption-module-how-to-guide.

http://scn.sap.com/community/pi-and-soa-middleware/blog/2013/02/07/using-pgp-in-process-integration.

I have placed both public, private keys in the usr/sap/<System ID>/<Instance ID>/sec.

I am getting the below error. while i am testing the scenario. i am getting the below error.

My client didn't shared any Private passwords, So I used the pwdOwnPrivatekey password as same as FTP log in password.

whom will share the pwdOwnPrivatekey parameter password?

Receiver client or PI Team ?

If Pi Team needs to give , How can we generate the password. Please find the screen shots below.

Thanks & Reagrds,

Pavan