Difference between revisions of "~/.ssh/authorized keys"
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* [[AuthenticationMethods]] | * [[AuthenticationMethods]] | ||
* <code>[[visudo]]</code> | * <code>[[visudo]]</code> | ||
| + | * <code>[[~/.ssh/id_ed25519.pub]]</code> | ||
== See also == | == See also == | ||
* {{ssh-copy-id}} | * {{ssh-copy-id}} | ||
* {{OpenSSH}} | * {{OpenSSH}} | ||
| − | |||
[[Category:SSH]] | [[Category:SSH]] | ||
Latest revision as of 16:57, 19 December 2024
touch ~/.ssh/authorized_keys && chmod og-r ~/.ssh/authorized_keyschmod 600 ~/.ssh/authorized_keys or chmod ogw-r ~/.ssh/authorized_keys- Configure OpenSSH to allow Public-key authentication
#AuthorizedKeysFile .ssh/authorized_keys .ssh/authorized_keys
https://linux.die.net/man/5/sshd_config sshd_config
AUTHORIZED_KEYS FILE FORMAT
AuthorizedKeysFile specifies the files containing public keys for public key authentication; if this option is not specified, the default is ~/.ssh/authorized_keys and
~/.ssh/authorized_keys2. Each line of the file contains one key (empty lines and lines starting with a ‘#’ are ignored as comments). Public keys consist of the following
space-separated fields: options, keytype, base64-encoded key, comment. The options field is optional. The supported key
types are:
[email protected] ecdsa-sha2-nistp256 ecdsa-sha2-nistp384 ecdsa-sha2-nistp521 [email protected] ssh-ed25519 ssh-dss ssh-rsa
The comment field is not used for anything (but may be convenient for the user to identify the key).
Contents
Example files[edit]
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEBiBqpWXhPTH9RIo9UR3ED9xUv6O/SqpWRn16UH/gHD TEXT@TEXT ssh-rsa .../...
Additional information about format key:
- https://serverfault.com/questions/526399/why-do-my-two-ssh-public-keys-have-the-same-beginning/526404
- https://tools.ietf.org/html/rfc4253
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQ...
| "ssh-rsa" |exponent| modulus
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFKy...
| "ssh-ed25519" | 32 byte public key
Errors[edit]
Apr 26 11:45:37 ip-10-10-10-10.eu-west-1.compute.internal sshd[18174]: Authentication refused: bad ownership or modes for file /home/your_user/.ssh/authorized_keys
Related terms[edit]
- sftp configuration
expiry-timein OpenSSH 7.7 (2018)ssh-import-id- AuthenticationMethods
visudo~/.ssh/id_ed25519.pub
See also[edit]
ssh-copy-id, ~/.ssh/id_ed25519.pub, ~/.ssh/authorized_keys- OpenSSH (changelog):
/etc/ssh/sshd_config|/etc/ssh/ssh_config|~/.ssh/|openSSL | sshd logs|sftp|scp|authorized_keys|ssh-keygen|ssh-keyscan|ssh-add|ssh-agent|ssh|Ssh -O stop|ssh-copy-id|CheckHostIP|UseKeychain, OpenSSF, ~/.ssh/authorized_keys
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