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Putty pageant for windows 10 - |
- Putty pageant for windows 10
Pageant will remove the key from its memory. You can apply this to keys you added using the Add Key button, or to keys you added remotely using agent forwarding see section 9. Pageant can be made to do things automatically when it starts up, by specifying instructions on its command line.
If Pageant is already running, invoking it again with the options below causes actions to be performed with the existing instance, not a new one. Pageant can automatically load one or more private keys when it starts up, if you provide them on the Pageant command line. Your command line might then look like:.
You can specify the --encrypted option to defer decryption of these keys. You can arrange for Pageant to start another program once it has initialized itself and loaded any keys specified on its command line. When Pageant starts up, it can optionally write out a file containing an OpenSSH configuration directive that tells the Windows ssh. If you include this file from your Windows SSH configuration, then ssh.
For example, you might run Pageant like this with your own username substituted, of course :. If not, it can be installed as a Windows optional feature, e. Start Pageant with the --keylist option to show the main window as soon as it starts up. Agent forwarding is a mechanism that allows applications on your SSH server machine to talk to the agent on your client machine.
Note that at present, whether agent forwarding in SSH is available depends on your server. To enable agent forwarding, first start Pageant. Open the session as normal. To check that this has actually happened, you can try this command on Unix server machines:. Now if you run ssh on the server and use it to connect through to another server that accepts one of the keys in Pageant, you should be able to log in without a password:.
In addition, if you have a private key on one of the SSH servers, you can send it all the way back to Pageant using the local ssh-add command:. You can add keys to Pageant without decrypting them. To add a key to Pageant in this encrypted form, press the Add Key encrypted button in the Pageant main window, or alternatively right-click on the Pageant icon in the system tray and select Add Key encrypted from there.
Pageant will bring up a file dialog, in just the same way as it would for the plain Add Key button. Instead, the key will be listed in the main window with encrypted after it. To start Pageant up in the first place with encrypted keys loaded into it, you can use the --encrypted option on the command line.
For example:. After a key has been decrypted for the first use, it remains decrypted, so that it can be used again. The main window will list the key with re-encryptable after it. You can revert it to the previous state, where a passphrase is required, using the Re-encrypt button in the Pageant main window. Note that this does not discard cleartext keys that were not previously added encrypted! Caution: When Pageant displays a prompt to decrypt an already-loaded key, it cannot give keyboard focus to the prompt dialog box.
As far as we know this is a deliberate defensive measure by Windows, against malicious software. Using Pageant for public-key authentication gives you the convenience of being able to open multiple SSH sessions without having to type a passphrase every time, but also gives you the security benefit of never storing a decrypted private key on disk. Many people feel this is a good compromise between security and convenience. It is a compromise, however. Holding your decrypted private keys in Pageant is better than storing them in easy-to-find disk files, but still less secure than not storing them anywhere at all.
This is for two reasons:. Similarly, use of agent forwarding is a security improvement on other methods of one-touch authentication, but not perfect.
Holding your keys in Pageant on your Windows box has a security advantage over holding them on the remote server machine itself either in an agent or just unencrypted on disk , because if the server machine ever sees your unencrypted private key then the sysadmin or anyone who cracks the machine can steal the keys and pretend to be you for as long as they want. These in turn can be used by several other useful tools, like Git and Cygwin, etc. PuTTY includes support for the Pageant protocol, which is used by other applications in this solution.
Download PuTTY and install it. GPG4Win can act as a drop-in replacement for Pageant. Step 2 Start the gpg-connect-agent. Step 3 Enable SSH support by editing the gpg-agent. Add the following lines to it:. Step 4 To apply this change, restart the gpg-agent by running the following command in a PowerShell terminal or Command Prompt:.
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