Pascal (Lazarus/Delphi)

Encode Integer to Hex or Base64 using N Bytes

See more Encryption Examples

Demonstrates how to write an integer to N bytes (little-endian or big-endian) and return the bytes in any encoding such as hex, base64, etc.

Note: This example requires Chilkat v9.5.0.77 or greater.

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;
  value: Integer;
  bLittleEndian: Boolean;
  s: string;

begin
  crypt := TCrypt2.Create;

  //  1193046 decimal is equal to 0x123456 hex.
  value := 1193046;

  //  Write the integer in 8 bytes using little-endian byte-order and return as hex
  bLittleEndian := True;
  s := crypt.EncodeInt(value,8,bLittleEndian,'hex');
  //  The output is: 5634120000000000
  WriteLn(s);

  //  Now use big-endian...
  bLittleEndian := False;
  s := crypt.EncodeInt(value,8,bLittleEndian,'hex');
  //  The output is: 0000000000123456
  WriteLn(s);

  //  Instead of hex, get the 8 bytes using base64.
  s := crypt.EncodeInt(value,8,bLittleEndian,'base64');
  //  The output is: AAAAAAASNFY=
  WriteLn(s);


  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.