How to let putty display a different key format?

[sam1275tom]

Hello.
Here's a example to show my question: I setup a ssh server on centos, then I use "ssh 127.0.0.1" on the same machine, then I take a note for the key. But when I connect it using putty on a windows machine, the key putty shows is different from I previous seen on the centos.
This happens on some other cases as well, above is just a example. So how can I change the key format that putty shows, so I can compare it to the key shown on the server itself?
Thanks.

 

[t53186]

Your question does not make any sense. Putty displays what putty gets from whatever you are connected to.

 

[spiketheaardvark]

Are you talking about how ssh uses a different security key format than putty? On the Putty web site there is a tool that will convert linux generated ssh keys into the .ppk used by putty (or .ppk to ssh). It's function in the puttygen.exe program if I remember correctly

 

[sam1275tom]

Your question does not make any sense. Putty displays what putty gets from whatever you are connected to.

I don't think so, there's many cases in a local test (so no MIM attack), Linux/putty/winscp all display different keys, so they must be different format.

 

[sam1275tom]

Are you talking about how ssh uses a different security key format than putty? On the Putty web site there is a tool that will convert linux generated ssh keys into the .ppk used by putty (or .ppk to ssh). It's function in the puttygen.exe program if I remember correctly

I searched that, but that seems to use for client public key log on, not for verify server keys.

 

[spiketheaardvark]

Are you trying to get the key hash to make sure the keys match? It's not clear what exactly you are trying to do.

 

[sam1275tom]

Are you trying to get the key hash to make sure the keys match? It's not clear what exactly you are trying to do.

Yes, I'm trying to get the correct format so that I can verify the fingerprint, they will not match sometimes due to wrong format, even if the certificate is right. So when not in a controllable environment, I cannot tell if the certificate is right.