Create SSH Key

How to create SSH key pair in Linux

Create key pair using different algorithms

$ ssh-keygen -t rsa -b 4096
$ ssh-keygen -t dsa
$ ssh-keygen -t ecdsa -b 521
$ ssh-keygen -t ed25519

Specify a file name while creating the key pair

$ ssh-keygen -f ~/.ssh/rdu_github -t rsa -b 4096

Typically you want the permissions to be:

• .ssh directory: 700 (drwx------)
• public key (.pub file): 644 (-rw-r--r--)
• private key (id_rsa): 600 (-rw-------)

Reference

• [1] https://www.ssh.com/ssh/keygen/
• [2] https://superuser.com/questions/215504/permissions-on-private-key-in-ssh-folder