-> user1: 'alma' with passphrase: 'amla'
-> user2: 'citrom' with passphrase: 'mortic'
-> user1: 'dinnye' with passphrase: 'eynnid'
The private keys are envrypted in DER format with pkcs#8 using the passphrase.
The private keys are temporarly stored under config/{homeDir}
The public keys are stored in the config file without encryption
