Nov 10, 2011 How to Generate A Public/Private SSH Key Linux By Damien – Posted on Nov 10, 2011 Nov 18, 2011 in Linux If you are using SSH frequently to connect to a remote host, one of the way to secure the connection is to use a public/private SSH key so no password is transmitted over the network and it can prevent against brute force attack. Key generation is the process of generating keys in cryptography.A key is used to encrypt and decrypt whatever data is being encrypted/decrypted. A device or program used to generate keys is called a key generator or keygen. I'm still new to public key crypto. I'm trying to understand how it is that the private key is generated first in public key crypto? I would have expected the private and public key to be generated at the same time, as they would depend on each other.
The standard procedure for creating a Secure Shell public/private key pair follows. For information on additional options, see ssh-keygen(1).
Start the key generation program. Bitlocker recovery key id generator.
Enter the path to the file that will hold the key.
By default, the file name id_rsa, which represents an RSA v2 key, appears in parentheses. You can select this file by pressing Return. Or, you can type an alternative filename.
The public key name is created automatically and the string .pub is appended to the private key name.
Enter a passphrase for using your key. /xp-pro-cd-key-generator.html.
This passphrase is used for encrypting your private key. A good passphrase is 10–30 characters long, mixes alphabetic and numeric characters, and avoids simple English prose and English names. A null entry means no passphrase is used, but this entry is strongly discouragedfor user accounts. Note that the passphrase is not displayed when you type it in.
Re-enter the passphrase to confirm it.
Check the results.
The key fingerprint (a colon-separated series of 2 digit hexadecimal values) is displayed. Check that the path to the key is correct. In the example, the path is /home/johndoe/.ssh/id_rsa.pub. At this point, you have created a public/private key pair.
Copy the public key and append the key to the $HOME/.ssh/authorized_keys file in your home directory on the remote host.