Description
string
ssh2_fingerprint ( resource session [, int flags] )
Returns a server hostkey hash from an active session.
Defaults to MD5 fingerprint encoded as ASCII hex values.
flags may be either of
SSH2_FINGERPRINT_MD5 or
SSH2_FINGERPRINT_SHA1 logically ORed with
SSH2_FINGERPRINT_HEX or
SSH2_FINGERPRINT_RAW.
Defaults to SSH2_FINGERPRINT_MD5 |
SSH2_FINGERPRINT_HEX.
Example 1. 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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