here is some code that you can use from a .pas file that I have written using
encryption
save this information to a file called uEncrypt.pas
then create a windows from with 2 edit boxes and a TMemo on the form
I will paste the code below for the form as well to use..
the key here is creating a Seed Key
unit uEncrypt;
interface
function Decrypt(const S: AnsiString; Key: Word): AnsiString;
function Encrypt(const S: AnsiString; Key: Word): AnsiString;
implementation
const
C1 = 52845;
C2 = 22719;
function Decode(const S: AnsiString): AnsiString;
const
Map: array[Char] of Byte = (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63, 52, 53,
54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2,
3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30,
31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0);
var
I: LongInt;
begin
case Length(S) of
2:
begin
I := Map[S[1]] + (Map[S[2]] shl 6);
SetLength(Result, 1);
Move(I, Result[1], Length(Result))
end;
3:
begin
I := Map[S[1]] + (Map[S[2]] shl 6) + (Map[S[3]] shl 12);
SetLength(Result, 2);
Move(I, Result[1], Length(Result))
end;
4:
begin
I := Map[S[1]] + (Map[S[2]] shl 6) + (Map[S[3]] shl 12) +
(Map[S[4]] shl 18);
SetLength(Result, 3);
Move(I, Result[1], Length(Result))
end
end
end;
function PreProcess(const S: AnsiString): AnsiString;
var
SS: AnsiString;
begin
SS := S;
Result := '';
while SS <> '' do
begin
Result := Result + Decode(Copy(SS, 1, 4));
Delete(SS, 1, 4)
end
end;
function InternalDecrypt(const S: AnsiString; Key: Word): AnsiString;
var
I: Word;
Seed: Word;
begin
Result := S;
Seed := Key;
for I := 1 to Length(Result) do
begin
Result[I] := Char(Byte(Result[I]) xor (Seed shr 8));
Seed := (Byte(S[I]) + Seed) * Word(C1) + Word(C2)
end
end;
function Decrypt(const S: AnsiString; Key: Word): AnsiString;
begin
Result := InternalDecrypt(PreProcess(S), Key)
end;
function Encode(const S: AnsiString): AnsiString;
const
Map: array[0..63] of Char = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
'abcdefghijklmnopqrstuvwxyz0123456789+/';
var
I: LongInt;
begin
I := 0;
Move(S[1], I, Length(S));
case Length(S) of
1:
Result := Map[I mod 64] + Map[(I shr 6) mod 64];
2:
Result := Map[I mod 64] + Map[(I shr 6) mod 64] +
Map[(I shr 12) mod 64];
3:
Result := Map[I mod 64] + Map[(I shr 6) mod 64] +
Map[(I shr 12) mod 64] + Map[(I shr 18) mod 64]
end
end;
function PostProcess(const S: AnsiString): AnsiString;
var
SS: AnsiString;
begin
SS := S;
Result := '';
while SS <> '' do
begin
Result := Result + Encode(Copy(SS, 1, 3));
Delete(SS, 1, 3)
end
end;
function InternalEncrypt(const S: AnsiString; Key: Word): AnsiString;
var
I: Word;
Seed: Word;
begin
Result := S;
Seed := Key;
for I := 1 to Length(Result) do
begin
Result[I] := Char(Byte(Result[I]) xor (Seed shr 8));
Seed := (Byte(Result[I]) + Seed) * Word(C1) + Word(C2)
end
end;
function Encrypt(const S: AnsiString; Key: Word): AnsiString;
begin
Result := PostProcess(InternalEncrypt(S, Key))
end;
end.
(*
{**************************************************************}
// Example:
{**************************************************************}
procedure TForm1.Button1Click(Sender: TObject);
const
my_key = 33189;
var
sEncrypted, sDecrypted :AnsiString;
begin
// Encrypt a string
sEncrypted := Encrypt('this is a sample text to encrypt...abcd 123
{}[]?=)=(',my_key);
// Show encrypted string
ShowMessage(sEncrypted);
// Decrypt the string
sDecrypted := Decrypt(sEncrypted,my_key);
// Show decrypted string
ShowMessage(sDecrypted);
end; *)
use this code in your windows form
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Label1: TLabel;
Label2: TLabel;
Memo1: TMemo;
Memo2: TMemo;
Memo3: TMemo;
Label3: TLabel;
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
uses
uEncrypt;
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
const
SeedKey = 53269;
begin
Memo2.Text := Encrypt(Memo1.Text,SeedKey);
Memo3.Text := Decrypt(Memo2.Text,SeedKey);
end;
end.
--- On Thu, 3/26/09, Rob Kennedy <[email protected]> wrote:
> From: Rob Kennedy <[email protected]>
> Subject: Re: [delphi-en] Encrypt in Delphi Decrypt in php in vice versa
> To: [email protected]
> Date: Thursday, March 26, 2009, 5:34 PM
> clauddiu wrote:
> > I have to send to a php script some sensitive data and
> I have to encrypt
> > it, i try DCPcrypt and madCrypt (I here that is
> working) but no one work,
> > at last I was not able to implement it.
> >
> > here is my madCrypt code:
> >
> > procedure TForm1.Button1Click(Sender: TObject);
> > var
> > data : AnsiString;
> > begin
> > data := memo1.Text;
> > madCrypt.Encrypt(data,'pass',12345678);
> > memo2.Text := encode(data);
> > end;
>
> The iv parameter is an Int64 not because you're
> expected to supply
> numbers, but because you're expected to provide an
> 8-byte value. Keep that
> in mind while we consider the PHP code...
>
> > and here is my php script:
> >
> > <?
> > function EncryptBlow($text)
> > {
> > $key = sha1("pass");
> > return
> >
> base64_encode(mcrypt_cbc(MCRYPT_BLOWFISH,$key,$text,MCRYPT_ENCRYPT,'12345678'));
> > }
>
> There you've provided an 8-character string for the iv
> parameter. The
> eight bytes in that string are not the same as the eight
> bytes you
> provided in the Int64 value in Delphi.
>
> Try passing this value for your iv parameter in Delphi so
> it matches the
> 8-character string:
>
> const
> iv = $3132333435363738;
>
> Experiment with different orderings of those bytes to get
> the right
> little-endian or big-endian value.
>
> Also, instead of the password, you're supplying your
> PHP code the SHA-1
> hash of the password. You need to provide the same value in
> both versions
> of the code.
>
> --
> Rob
>
>
>
>
> ------------------------------------
>
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