tldr/pages/common/ssh-keygen.md

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# ssh-keygen
2016-01-13 11:04:46 +00:00
> Generate ssh keys user for authentication, password-less logins, and other things.
- Generate a key interactively:
`ssh-keygen`
- Specify file in which to save the key:
`ssh-keygen -f ~/.ssh/{{filename}}`
- Generate a DSA 2048 bit (default) key:
`ssh-keygen -t dsa`
- Generate an RSA 4096 bit key with your email as a comment:
`ssh-keygen -t rsa -b 4096 -C "{{email}}"`
- Retrieve the key fingerprint from a host (useful for confirming the authenticity of the host when first connecting to it via SSH):
`ssh-keygen -l -F {{remote_host}}`
- Change the password of a key:
`ssh-keygen -p -f ~/.ssh/{{filename}}`