Delphi DLL

Generating Random Password

See more PRNG Examples

Demonstrates how to generate random passwords. Delphi DLL

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
fortuna: HCkPrng;
bDigit: Boolean;
bUpperAndLower: Boolean;
otherChars: PWideChar;
excludeChars: PWideChar;
i: Integer;

begin
success := False;

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

success := False;

fortuna := CkPrng_Create();

// Set this equal to True if the generated password must include at least one digit (0-9)
bDigit := True;

// Set this equal to True if the generated password must include both uppercase and lowercase chars.
bUpperAndLower := True;

// The generated password must contain one of the following non-alphanumeric chars.
otherChars := '@#$%*';

// Exclude chars that appear similar to others:
excludeChars := 'iIlLoO0';

// Generate 8-character passwords:

for i := 1 to 10 do
  begin
    Memo1.Lines.Add(CkPrng__randomPassword(fortuna,8,bDigit,bUpperAndLower,otherChars,excludeChars));
  end;

CkPrng_Dispose(fortuna);

end;