Ssh host key

1. What is SSH host key?
2. How do I generate an SSH host key?
3. What is known host key?
4. How do I find my public private key?
5. How does SSH known hosts work?
6. What does SSH-copy-ID do?
7. How do I SSH to a Git key?
8. What can I use for SSH?

What is SSH host 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.

How do I generate an SSH host key?

To generate an SSH key on your Linux server run the command ssh-keygen . The command can take flags if you would like to customize the type of key that is generated as well as the signing algorithms used to generate the key. This example generates a standard 2048-bit RSA key without a passphrase.

What is known host key?

The known host key store contains the public key used by SSP to authenticate the server in outbound SFTP connections. To use SSH, you must configure a known host key store and import a known host key into the key store.

How do I find my public private key?

To extract public key from the private key file into separate public key file you use your openssl rsa -in private. pem -pubout -out public. pem command. When you produce a public key this way, it is extracted from the private key file, not calculated.

How does SSH known hosts work?

known_hosts. ... ssh/known_hosts file contains the SSH fingerprints of machines you've logged into. These fingerprints are generated from the remote server's SSH key. When you secure shell into a remote machine for the first time, you are asked if you want to continue connecting (Figure A).

What does SSH-copy-ID do?

Ssh-copy-id for copying SSH keys to servers. ssh-copy-id installs an SSH key on a server as an authorized key. Its purpose is to provision access without requiring a password for each login. This facilitates automated, passwordless logins and single sign-on using the SSH protocol.

How do I SSH to a Git key?

Using a browser, go to the GitHub home page at github.com and sign in to your account. In the upper-right corner of the page, click your profile photo, then click Settings: In the user settings sidebar, click SSH and GPG keys. Then click New SSH key.

What can I use for SSH?

SSH clients will typically support SCP (Secure Copy) and/or SFTP (SSH File Transfer Protocol) for transferring data; we tend to recommend using SFTP instead of SCP but both will work with our service.