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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Crypt2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: HCkCrypt2;
wpaHexKey: PWideChar;
pw: PWideChar;
pwCharset: PWideChar;
hashAlg: PWideChar;
ssidHex: PWideChar;
iterationCount: Integer;
outputBitLen: Integer;
enc: PWideChar;

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

crypt := CkCrypt2_Create();

// 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 := CkCrypt2__pbkdf2(crypt,pw,pwCharset,hashAlg,ssidHex,iterationCount,outputBitLen,enc);

Memo1.Lines.Add(wpaHexKey);

CkCrypt2_Dispose(crypt);

end;