What is SSH private key and public key?

What is SSH key used for?

An SSH key is an access credential for the SSH (secure shell) network protocol. This authenticated and encrypted secure network protocol is used for remote communication between machines on an unsecured open network. SSH is used for remote file transfer, network management, and remote operating system access.

How do I generate a public and private SSH key?

How to Create a Public/Private Key Pair

  1. Start the key generation program.
  2. Enter the path to the file that will hold the key.
  3. Enter a passphrase for using your key.
  4. Re-enter the passphrase to confirm it.
  5. Check the results.
  6. Copy the public key and append the key to the $HOME/.

What is a public SSH key?

The SSH public key is used by both the user and the remote server and is used to encrypt messages. On the remote server side, the public key is saved in a file that contains a list of all authorized public keys. On the user's side, the public key is stored in SSH key management software or in a file on their computer.

What is SSH RSA key?

A host key is a cryptographic key used for authenticating computers in the SSH protocol. Host keys are key pairs, typically using the RSA, DSA, or ECDSA algorithms. Public host keys are stored on and/or distributed to SSH clients, and private keys are stored on SSH servers.

What is the difference between public and private SSH key?

The private key is secret, known only to the user, and should be encrypted and stored safely. The public key can be shared freely with any SSH server to which the user wishes to connect.

What is SSH key full form?

Secure Socket Shell (SSH) Key Management, also called Secure Shell Management, is a special network protocol leveraging public-key cryptography to enable authorized users to remotely access a computer or other device via access credentials called SSH keys.


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