(PHP ActiveX) WPA Key Calculation from PassPhrase to Hex

Demonstrates how to calculate a WPA key from a passprhase and network SSID.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.Crypt2");

// The "ps" is the WPA passphrase
$pw = 'password';
$pwCharset = 'ansi';

// Hash algorithms may be: sha1, md2, md5, etc.
$hashAlg = 'sha1';

// Specify the SSID in hex:
// For example, if the SSID is "ABC", then the 
// hex values for these us-ascii chars is "414243"
$ssidHex = '414243';

// The WPA key calculation will always use 4096 iterations.
$iterationCount = 4096;

// The WPA hex output should be 256 bits.
$outputBitLen = 256;

// Indicate that "hex" is to be returned.
$enc = 'hex';

$wpaHexKey = $crypt->pbkdf2($pw,$pwCharset,$hashAlg,$ssidHex,$iterationCount,$outputBitLen,$enc);

print $wpaHexKey . "\n";

?>