Pascal (Lazarus/Delphi)

WPA Key Calculation from PassPhrase to Hex

See more Encryption Examples

Demonstrates how to calculate a WPA key from a passprhase and network SSID. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Crypt2;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  crypt: TCrypt2;
  wpaHexKey: string;
  pw: string;
  pwCharset: string;
  hashAlg: string;
  ssidHex: string;
  iterationCount: Integer;
  outputBitLen: Integer;
  enc: string;

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

  crypt := TCrypt2.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 := crypt.Pbkdf2(pw,pwCharset,hashAlg,ssidHex,iterationCount,outputBitLen,enc);

  WriteLn(wpaHexKey);


  crypt.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.