Private key isn't being used

What steps will reproduce the problem?
1. Set the private in the settings from the "Key File Manager" option.
2. Turn on tunneling.

What is the expected output? What do you see instead?
Expected: successful connection.
From the server:
Accepted publickey for user from x.x.x.x port 39443 ssh2: DSA 
12:34:45:67:89:ab:cd:ef:10:12:13
:14:15:16:17:18

Instead, this happens: connection fails.
From server:
Failed password for user from x.x.x.x port 54613 ssh2
What version of the product are you using? On what operating system?

Please provide any additional information below.
In addition to choosing the private key file, I even made sure it was named 
/sdcard/sshtunnel/key.

Original issue reported on code.google.com by the.rh...@gmail.com on 5 Aug 2014 at 6:06

maoruilin / sshtunnel

Private key isn't being used #189