#Putty ssh key authentication full
#Putty ssh key authentication password
#Putty ssh key authentication windows

You will be prompted to supply a filename (for saving the key pair) and a password (for protecting your private key):.

To generate RSA keys, on the command line, enter:

Log into the computer you'll use to access the remote host, and then use command-line SSH to generate a key pair using the RSA algorithm.

To set up public key authentication using SSH on a Linux or macOS computer: Set up public key authentication using SSH on a Linux or macOS computer For help, see Get started with Two-Step Login (Duo) at IU and Help for Two-Step Login (Duo). If you have questions about how two-factor authentication may impact your workflows, contact the UITS Research Applications and Deep Learning team. SSH public key authentication remains an option for researchers who submit the 'SSH public key authentication to HPS systems' agreement (log into HPC everywhere using your IU username and passphrase), in which you agree to set a passphrase on your private key when you generate your key pair. Two-factor authentication using Two-Step Login (Duo) is required for access to the login nodes on IU research supercomputers, and for SCP and SFTP file transfers to those systems. Therefore, you must either be able to log into the remote system with an established account username and password/passphrase, or have an administrator on the remote system add the public key to the ~/.ssh/authorized_keys file in your account.

You need to be able to transfer your public key to the remote system.

#Putty ssh key authentication windows

This document includes instructions for generating a key pair with command-line SSH on a Linux or macOS computer, and with PuTTY on a Windows computer. The computer you use to connect to the remote server must have a version of SSH installed.If the remote system is using a different version of SSH (for example, Tectia SSH), the process outlined below may not be correct. The information in this document assumes the remote system uses OpenSSH. The remote system must have a version of SSH installed.Conceivably, you can share the public key with anyone without compromising the private key you store it on the remote system in a. You keep the private key a secret and store it on the computer you use to connect to the remote system. SSH public key authentication relies on asymmetric cryptographic algorithms that generate a pair of separate keys (a key pair), one 'private' and the other 'public'. Using SSH public key authentication to connect to a remote system is a robust, more secure alternative to logging in with an account password or passphrase. Set up public key authentication using PuTTY on a Windows 11, Windows 10, or Windows 8.x computer.Set up public key authentication using SSH on a Linux or macOS computer.

#Putty ssh key authentication full

What I have found to be the least likely to break is to echo the full string and redirect the output to the file. Some editors will alter the text as you paste, or do something with newlines or something that makes the authorized_keys file invalid. F21 is right that you need to copy the key out of the PuTTYGen window instead of saving the file, but after copying, the way you paste may have significant impact on whether your key will work or not.

Just a tip I hope may help someone else with the headaches I had. Why is this happening and how can I fix this? Received disconnect from 192.168.1.7: 14: No supported authentication methods available Trying public key file /etc/ssh/username/authorized_keysДЇailed publickey for username from 192.168.1.7 port 14343 ssh2 Test whether pkalg/pkblob are acceptable [preauth[Д¬hecking blacklist file /usr/share/ssh/blacklist.RSA-1023Д¬hecking blacklist file /etc/ssh/blacklist.RSA-1023 Userauth-request for user username service ssh-connection method publickey If I run sshd in debug mode, I see: PAM: initializing for 'username' When I connect using putty or WinSCP, I get an error saying No supported authentication methods available (server sent public key). Set up sshd_config like so: PubkeyAuthentication yesДЄuthorizedKeysFile /etc/ssh/%u/authorized_keys

Moved the public key to /etc/ssh/myusername/authorized_keys (I am using encrypted home directories).

I then set about trying to get it to use public/private key authentication. I installed opensshd via apt-get and was able to connect to the server using putty with my username and password. I have a 12.10 server setup in a virtual machine with its network set to bridged (essentially will be seen as a computer connected to my switch).