How to Create an SSH Key Pair for User Authentication¶
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