(Delphi ActiveX) WPA Key Calculation from PassPhrase to Hex

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

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: TChilkatCrypt2;
wpaHexKey: WideString;
pw: WideString;
pwCharset: WideString;
hashAlg: WideString;
ssidHex: WideString;
iterationCount: Integer;
outputBitLen: Integer;
enc: WideString;

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

crypt := TChilkatCrypt2.Create(Self);

// 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);

Memo1.Lines.Add(wpaHexKey);
end;