$ ssh-keygen -lv -E md5 -f ~/.ssh/id_rsa.old.pub
2048 MD5:b2:c7:2a:77:84:3a:62:97:56:d0:95:49:63:fd:5d:2b [email protected] (RSA)
+---[RSA 2048]----+
|       .++       |
|       .+..     .|
|     . .   . . ..|
|    . .     .E.. |
|     ...S     .  |
|      o+.        |
|     +..o        |
|  o B .o.        |
| . + +..         |
+------[MD5]------+