PHP Extension

SFTP Host Key Fingerprint

See more SFTP Examples

Demonstrates how to get the SSH server's host key fingerprint after connecting. PHP Extension

<?php

include("chilkat.php");

$success = false;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$sftp = new CkSFtp();

$hostname = 'sftp.example.com';
$port = 22;
$success = $sftp->Connect($hostname,$port);
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

// Get the classic MD5 fingeprint
$md5_fingerprint = $sftp->hostKeyFingerprint();
print $md5_fingerprint . "\n";

// Sample output:
// ssh-rsa 3072 21:b0:d8:41:4e:ef:78:10:20:af:01:b7:71:5d:eb:94

// Starting in Chilkat v9.5.0.92, we can also get the SHA256 fingerprint.
// (it is also possible to get fingerprints using other hash algorithms such as SHA384, SHA512, etc.)

$includeKeyType = true;
$includeHashName = true;
$sha256_fingerprint = $sftp->getHostKeyFP('SHA256',$includeKeyType,$includeHashName);
print $sha256_fingerprint . "\n";

// Sample output:
// ssh-rsa SHA256:Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

// The key type and hash name can be optionally included or not.
$includeKeyType = false;
$includeHashName = true;
$sha256_fingerprint = $sftp->getHostKeyFP('SHA256',$includeKeyType,$includeHashName);
print $sha256_fingerprint . "\n";

// SHA256:Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

$includeKeyType = true;
$includeHashName = false;
$sha256_fingerprint = $sftp->getHostKeyFP('SHA256',$includeKeyType,$includeHashName);
print $sha256_fingerprint . "\n";

// ssh-rsa Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

$includeKeyType = false;
$includeHashName = false;
$sha256_fingerprint = $sftp->getHostKeyFP('SHA256',$includeKeyType,$includeHashName);
print $sha256_fingerprint . "\n";

// Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY=

?>