Giving Passphrases for Private Keys
 To give the passphrase for a specified key, run the following command, giving 
the key identifier as an argument: 
 
# ssh-socks-proxy-ctl key-passphrase 1 -a /tmp/ssh-SSHSP/ssh-socks-proxy
 Alternatively, you can give the key hash value as the argument:
 
# ssh-socks-proxy-ctl key-passphrase d0fe9f7a24e531eabb8256205476b14133
  -a /tmp/ssh-SSHSP/ssh-socks-proxy
 You are prompted to give the passphrase for the key.
 To give passphrases for all keys, run the following command: 
 
# ssh-socks-proxy-ctl key-passphrase --all -a /tmp/ssh-SSHSP/ssh-socks-proxy
 You are prompted to give passphrases for each key found by the SOCKS Proxy in turn.
 After the passphrase has been given, it will be stored in cache and the key 
can be used non-interactively.