How to Generate a Public/Private KeyPair for Use With Solaris Secure Shell
I reached SSH section. I made it as written, but when i logged out from root, i cant access root@IPADDRESS -p 30000 again! But i can access user@IPADDRESS -p 30000. So, the question is, how to set a public SSH key for root user? Overview Public key authentication is a way of logging into an SSH/SFTP account using a cryptographic key rather than a password. If you use very strong SSH/SFTP passwords, your accounts are already safe from brute force attacks. However, using public key authentication provides many benefits when working with multiple developers. Configuring public key authentication with Bitvise SSH Client. We recommend the page Public keys in SSH. Generate public/private keypair. Accessibility on the Login tab controls whether a keypair stored in the profile can be read by another Windows user, or on another computer. Mar 31, 2018 Generate public key and store into a file. It is a simple one liner command to generate a public key from a private key, so lets say our private key is named ‘[email protected]’ and we want to generate the public key and name it ‘authorizedkeys’. Below is the command to do this.
Users must generate a public/private key pair when their site implementshost-based authentication or user public-key authentication. For additionaloptions, see the ssh-keygen(1) manpage.
Before You Begin
Determine from your system administrator if host-based authenticationis configured.
- Start the key generation program.where -t is the type of algorithm, one of rsa, dsa, or rsa1.
- Specify the path to the file that will hold the key.Bydefault, the file name id_rsa, which represents an RSAv2 key, appears in parentheses. You can select this file by pressing the Return key. Or, you can type an alternative file name.The file name of the public key is created automatically by appendingthe string .pub to the name of the private key file.
- Type a passphrase for using your key.This passphraseis used for encrypting your private key. A null entry is stronglydiscouraged. Note that the passphrase is not displayed when youtype it in.
- Retype the passphrase to confirm it.
- Check the results.Check that the path to the keyfile is correct.At this point, you have created a public/private key pair.
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- If your administrator has configuredhost-based authentication, you might need to copy the local host's publickey to the remote host.You can now log in to the remote host.For details, see How to Log In to a Remote Host With Solaris Secure Shell.
- Type the command on one line with no backslash.
- When you are prompted, supply your login password.
- If your site uses user authentication with public keys, populateyour authorized_keys file on the remote host.
- Copy your public key to the remote host.Type thecommand on one line with no backslash.
- When you are prompted, supply your login password.Whenthe file is copied, the message “Key copied” is displayed.
- (Optional) Reduce the prompting for passphrases.For a procedure, see How to Reduce Password Prompts in Solaris Secure Shell. For more information, see the ssh-agent(1) and ssh-add(1) man pages.
Example 19–2 Establishing a v1 RSA Key for a User
In the following example, the user cancontact hosts that run v1 of the Solaris Secure Shell protocol. To be authenticated by v1hosts, the user creates a v1 key, then copies the public key portion to theremote host.
Lets say you have a private/public key pair that you use to login to your server via SSH and you lose the public key, either it was deleted or corrupt and you don’t want to have to regenerate a new pair what options do you have? In this post I will demonstrate how to regenerate a public key from the corresponding private key that you still have.
Generate public key and store into a file
It is a simple one liner command to generate a public key from a private key, so lets say our private key is named ‘[email protected]’ and we want to generate the public key and name it ‘authorized_keys’. Below is the command to do this.