Centos 7 Generate Ssh Keys

Nov 20, 2019 Setup SSH Passwordless Login on CentOS 8. To enable the SSH passwordless login, we have to put the public key entry of the local machine on the remote machine’s /.ssh/authorizedkeys ( represents the user’s home directory) file. We can set up an SSH passwordless login in two ways. Choose any one of the ways. Using ssh-copy-id Command. To generate a DSA key pair for version 2 of the SSH protocol, follow these steps: Generate a DSA key pair by typing the following at a shell prompt: $ ssh-keygen -t dsa Generating public/private dsa key pair. Jan 01, 2019 In this article, we are configuring SSH Keys using PuTTYgen and then configure a CentOS 7 machine for password less logins by PuTTY client. This Article Provides: Environment Specification: One Microsoft Windows based client and a CentOS 7 based server. Generate SSH Keys using PuTTYgen: PuTTYgen is included with PuTTY SSH client. If you generate the key for the user you also have to have a secure method of getting the private key and it's pass phrase to the user. Much better the user generate the key and then just email you the public key. – user9517 Oct 22 '11 at 20:02.

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Server Ssh Centos 7

When I clone an OS image to a new, identical hardware PC I of course need to change the host name in a couple of places on the new machine. I suspect it is also good practice to generate new ssh keys for use by openssh server. I found an article here http://www.softec.lu/site/DevelopersCor .. rateNewSsh which outlines the process.
I can generate new dsa, ecdsa and rsa keys using the commands in the article. However, I also find an ed25519 key in /etc/ssh. It was dated the same as the other keys - the data I installed the original OS. Employing my usual monkey see monkey copy/paste/tweak approach I tried the commandThe seems to have worked. It generated keypair files, a fingerprint and a randomart image. The -N and -t parameters seem to be correct according to the man page.
Can anyone confirm that I have supplied all of the necessary inputs to create a valid ed2519 key? Or a way I can test the key for validity?
TIA,

Centos 7 Ssh Key Authentication

Ken
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