ssh2_auth_pubkey_file

(PECL ssh2 >= 0.9.0)

ssh2_auth_pubkey_fileAuthenticate using a public key

Description

ssh2_auth_pubkey_file(
    resource $session,
    string $username,
    string $pubkeyfile,
    string $privkeyfile,
    string $passphrase = ?
): bool

Authenticate using a public key read from a file.

Parameters

session

An SSH connection link identifier, obtained from a call to ssh2_connect().

username

pubkeyfile

The public key file needs to be in OpenSSH's format. It should look something like:

ssh-rsa AAAAB3NzaC1yc2EAAA....NX6sqSnHA8= rsa-key-20121110

privkeyfile

passphrase

If privkeyfile is encrypted (which it should be), the passphrase must be provided.

Return Values

Returns true on success or false on failure.

Examples

Example #1 Authentication using a public key

<?php
$connection 
ssh2_connect('shell.example.com'22, array('hostkey'=>'ssh-rsa'));

if (
ssh2_auth_pubkey_file($connection'username',
                          
'/home/username/.ssh/id_rsa.pub',
                          
'/home/username/.ssh/id_rsa''secret')) {
  echo 
"Public Key Authentication Successful\n";
} else {
  die(
'Public Key Authentication Failed');
}
?>

Notes

Note:

The underlying libssh library doesn't support partial auths very cleanly That is, if you need to supply both a public key and a password it will appear as if this function has failed. In this particular case a failure from this call may just mean that auth hasn't been completed yet. You would need to ignore this failure and continue on and call ssh2_auth_password() in order to complete authentication.

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