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   ssh-keygen    ( 1 )

утилита ключа аутентификации OpenSSH (OpenSSH authentication key utility)

Файлы (Files)

~/.ssh/id_dsa
     ~/.ssh/id_ecdsa
     ~/.ssh/id_ecdsa_sk
     ~/.ssh/id_ed25519
     ~/.ssh/id_ed25519_sk
     ~/.ssh/id_rsa
             Contains the DSA, ECDSA, authenticator-hosted ECDSA,
             Ed25519, authenticator-hosted Ed25519 or RSA authentication
             identity of the user.  This file should not be readable by
             anyone but the user.  It is possible to specify a
             passphrase when generating the key; that passphrase will be
             used to encrypt the private part of this file using 128-bit
             AES.  This file is not automatically accessed by ssh-keygen
             but it is offered as the default file for the private key.
             ssh(1) will read this file when a login attempt is made.

~/.ssh/id_dsa.pub ~/.ssh/id_ecdsa.pub ~/.ssh/id_ecdsa_sk.pub ~/.ssh/id_ed25519.pub ~/.ssh/id_ed25519_sk.pub ~/.ssh/id_rsa.pub Contains the DSA, ECDSA, authenticator-hosted ECDSA, Ed25519, authenticator-hosted Ed25519 or RSA public key for authentication. The contents of this file should be added to ~/.ssh/authorized_keys on all machines where the user wishes to log in using public key authentication. There is no need to keep the contents of this file secret.

/etc/moduli Contains Diffie-Hellman groups used for DH-GEX. The file format is described in moduli(5).