(PECL ssh2 >= 0.9.0)
Retrieve fingerprint of remote server
string ssh2_fingerprint ( resource $session [, int $flags = SSH2_FINGERPRINT_MD5 | SSH2_FINGERPRINT_HEX ] )
Returns a server hostkey hash from an active session.
Parameters:
session
An SSH connection link identifier, obtained from a call to ssh2_connect().
flags
flags
may be either of SSH2_FINGERPRINT_MD5
or SSH2_FINGERPRINT_SHA1
logically ORed with SSH2_FINGERPRINT_HEX
or SSH2_FINGERPRINT_RAW
.
Returns:
Returns the hostkey hash as a string.
Examples:
Checking the fingerprint against a known value
<?php $known_host = '6F89C2F0A719B30CC38ABDF90755F2E4'; $connection = ssh2_connect('shell.example.com', 22); $fingerprint = ssh2_fingerprint($connection, SSH2_FINGERPRINT_MD5 | SSH2_FINGERPRINT_HEX); if ($fingerprint != $known_host) { die("HOSTKEY MISMATCH!\n" . "Possible Man-In-The-Middle Attack?"); } ?>
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