~/.ssh/authorized keys

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https://linux.die.net/man/5/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).

Example files

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

See also

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