To be able to encrypt your SGBP files you must create RSA public and private keys. Although we offer you a key generation tool, if you want to create the pair by yourself follow these steps:
Step 1. To create your public and private RSA keys on the command-line:
ssh-keygen -f rsa_id
Step 2. Convert OpenSSH RSA public key to OpenSSL format (PKCS8):
ssh-keygen -f rsa_id.pub -e -m PKCS8 > rsa_id.pkcs
Now you can encrypt your SGBP files by providing your public key.