(PHP Extension) NTLM Client and Server Code

Demonstrates the NTLM authentication algorithm for both client and server.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$ntlmClient = new CkNtlm();
$ntlmServer = new CkNtlm();

// The NTLM protocol begins by the client sending the server
// a Type1 message. 

$ntlmClient->put_Workstation('MyWorkstation');
$type1Msg = $ntlmClient->genType1();

print 'Type1 message from client to server:' . "\n";
print $type1Msg . "\n";

// If the server wishes to examine the information embedded within the
// Type1 message, it may call ParseType1. 
// This step is not necessary, it is only for informational purposes..
$type1Info = $ntlmServer->parseType1($type1Msg);

print '---' . "\n";
print $type1Info . "\n";

// The server now generates a Type2 message to be sent to the client.
// The Type2 message requires a TargetName.  A TargetName is
// the authentication realm in which the authenticating account
// has membership (a domain name for domain accounts, or server name
// for local machine accounts).
$ntlmServer->put_TargetName('myAuthRealm');

$type2Msg = $ntlmServer->genType2($type1Msg);
if ($ntlmServer->get_LastMethodSuccess() != true) {
    print $ntlmServer->lastErrorText() . "\n";
    exit;
}

print 'Type2 message from server to client:' . "\n";
print $type2Msg . "\n";

// The client may examine the information embedded in the Type2 message 
// by calling ParseType2, which returns XML.  This is only for informational purposes
// and is not required.
$type2Info = $ntlmClient->parseType2($type2Msg);

print '---' . "\n";
print $type2Info . "\n";

// The client will now generate the final Type3 message to be sent to the server.
// This requires the Username and Password:
$ntlmClient->put_UserName('test123');
$ntlmClient->put_Password('myPassword');

$type3Msg = $ntlmClient->genType3($type2Msg);
if ($ntlmClient->get_LastMethodSuccess() != true) {
    print $ntlmClient->lastErrorText() . "\n";
    exit;
}

print 'Type3 message from client to server:' . "\n";
print $type3Msg . "\n";

// The server may verify the response by first "loading" the Type3 message.
// This sets the various properties such as Username, Domain, Workstation,
// and ClientChallenge to the values embedded within theType3 message.
// The server may then use the Username to lookup the password.  
// Looking up the password is dependent on your infrastructure.  Perhaps your
// usernames/passwords are stored in a secure database.  If that's the case, you would
// write code to issue a query to get the password string for the given username.
// Once the password is obtained, set the Password property and then 
// generate the Type3 response again.  If the server's Type3 response matches
// the client's Type3 response, then the client's password is correct.

$success = $ntlmServer->LoadType3($type3Msg);
if ($success != true) {
    print $ntlmServer->lastErrorText() . "\n";
    exit;
}

// The Username property now contains the username that was embedded within
// the Type3 message.  It can be used to lookup the password.
$clientUsername = $ntlmServer->userName();

// For this example, we'll simply set the password to a literal string:
$ntlmServer->put_Password('myPassword');

// The server may generate the Type3 message again, using the client's correct
// password:
$expectedType3Msg = $ntlmServer->genType3($type2Msg);

print 'Expected Type3 Message:' . "\n";
print $expectedType3Msg . "\n";

// If the Type3 message received from the client is exactly the same as the
// expected Type3 message, then the client must've used the same password,
// and authentication is successful

?>