~/.ssh/authorized\_keys[2] contains the list of public keys.

Unfortunately, each public key does not specify the key strength ( number of bits ).

Is there a utility that can process this file line by line and output the key strength?

I checked man pages for `ssh-keygen`, but it looks like it would only work with private keys.

Also, is there a tool that would output sha1 hash the same way as it is displayed in `pageant` Putty tool?

The format I am looking for:

```
Key Algorithm  Strength  Hash                                             Comment
ssh-rsa        2048      00:11:22:33:44:55:66:77:88:99:aa:bb:cc:dd:ee:ff  user1@host1
ssh-rsa        2048      11:22:33:44:55:66:77:88:99:aa:bb:cc:dd:ee:ff:11  user2@host2

```