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sshwindows-8certificateputtyssh-keys

Registered SSH Certificates in Windows

I tried to connect to Ubuntu Server from Windows 8 using PuTTY.

At first, it asked me some registration of key. I accepted the pop up request. After that whenever I access Ubuntu Server there will be no registration, because already registered.

What I want is I want that registered key from Windows 8 location and remove them, so that when try to connect PuTTY will ask me to register keys again.

I don't know where those SSH keys or certificates are stored in Windows 8. Please help me to find certificates and remove them. I tried my C:\ I couldn't find any SSH folder or certificates.

Solution

  • It's called SSH host key. It's not a certificate.

    PuTTY stores them to Windows registry under a key:

    [HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\SshHostKeys]

    See Verifying the host key chapter in PuTTY documentation to understand the purpose and importance of verifying the SSH host key.