$ ssh-keygen -f win_id_rsa
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in win_id_rsa.
Your public key has been saved in win_id_rsa.pub.
The key fingerprint is:
df:25:e9:a5:12:b1:ea:bf:fa:41:23:62:88:cb:4b:1e salva@topo
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|                 |
|          .      |
|   . .     o .   |
|  . . o S = o o  |
| . . . . = = =   |
|  E     . + +    |
| o o   .   o     |
|  o     o++.     |
+-----------------+