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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