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Вход (L16R16) = 1001110001100011100100001010011010100100010111110110111000110100
Полученная = 00110000 00111001 11101011 01101000 01100110 10011011 00111000 11000101 =
48 57 235 104 102 155 56 197 = 0 9 л h f > 8 Е
Программа
Шифрование
Расшифровка
Текст программы
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Memo1: TMemo;
Memo2: TMemo;
Label1: TLabel;
Label2: TLabel;
Button1: TButton;
Button2: TButton;
Memo3: TMemo;
Label3: TLabel;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
c, d, k: array [0..16] of AnsiString;
r, l, rez, z: AnsiString;
w, desK, desR: byte;
implementation
{$R *.dfm}
procedure DecToBin(input: string; var output: ansistring);
var
a, b: double;
ost, q, w: byte;
st: AnsiString;
str: string[8];
begin
str:= ' ';
for w:= 1 to 8 do
begin
q:= Ord(input[w]);
b:= q;
While b <> 1 do
begin
a:= q / 2;
b:= Int(a);
if a = b then
ost:= 0
else ost:= 1;
q:= Round(b);
st:= st + IntToStr(ost);
if b = 1 then st:= st + '1';
end;
ost:= 1;
for q:= Length(st) downto 1 do // ïåðåâîðîò ñòðîêè
begin
str[ost]:= st[q];
Inc(ost);
end;
case Length(st) of
1: Insert('0000000', str, 1); // äîáàâëåíèå íåäîñòàþùèõ íîëåé
2: Insert('000000', str, 1);
3: Insert('00000', str, 1);
4: Insert('0000', str, 1);
5: Insert('000', str, 1);
6: Insert('00', str, 1);
7: Insert('0', str, 1);
end;
output:= output + str;// + ' ';
str:= ' ';
st:= '';
end;
end;
procedure BeginPerestanovka(input: ansistring; var output: ansistring);
begin
output:=
input[58] + input[50] + input[42] + input[34] + input[26] + input[18]
+ input[10] + input[2]
+ input[60] + input[52] + input[44] + input[36] + input[28] + input[20]
+ input[12] + input[4]
+ input[62] + input[54] + input[46] + input[38] + input[30] + input[22]
+ input[14] + input[6]
+ input[64] + input[56] + input[48] + input[40] + input[32] + input[24]
+ input[16] + input[8]
+ input[57] + input[49] + input[41] + input[33] + input[25] + input[17]
+ input[9] + input[1]
+ input[59] + input[51] + input[43] + input[35] + input[27] + input[19]
+ input[11] + input[3]
+ input[61] + input[53] + input[45] + input[37] + input[29] + input[21]
+ input[13] + input[5]
+ input[63] + input[55] + input[47] + input[39] + input[31] + input[23]
+ input[15] + input[7];
end;
procedure PerestanovkaKeyB(input: AnsiString; var output: AnsiString);
begin
output:= '';
output:=
input[57]+input[49]+input[41]+input[33]+input[25]+input[17]+input[9]
+input[1]+input[58]+input[50]+input[42]+input[34]+input[26]+input[18]
+input[10]+input[2]+input[59]+input[51]+input[43]+input[35]+input[27]
+input[19]+input[11]+input[3]+input[60]+input[52]+input[44]+input[36]
+input[63]+input[55]+input[47]+input[39]+input[31]+input[23]+input[15]
+input[7]+input[62]+input[54]+input[46]+input[38]+input[30]+input[22]
+input[14]+input[6]+input[61]+input[53]+input[45]+input[37]+input[29]
+input[21]+input[13]+input[5]+input[28]+input[20]+input[12]+input[4];
end;
procedure pocledovatelnostiK;
var
w: byte;
bufer: AnsiString;
begin
for w:= 0 to 16 do
begin
bufer:= Concat(c[w], d[w]);
k[w]:=
Concat(bufer[14], bufer[17], bufer[11], bufer[24], bufer[1], bufer[5],
bufer[3], bufer[28], bufer[15], bufer[6], bufer[21], bufer[10],
bufer[23], bufer[19], bufer[12], bufer[4], bufer[26], bufer[8],
bufer[16], bufer[7], bufer[27], bufer[20], bufer[13], bufer[2],
bufer[41], bufer[52], bufer[31], bufer[37], bufer[47], bufer[55],
bufer[30], bufer[40], bufer[51], bufer[45], bufer[33], bufer[48],
bufer[44], bufer[49], bufer[39], bufer[56], bufer[34], bufer[53],
bufer[46], bufer[42], bufer[50], bufer[36], bufer[29], bufer[32]);
end;
end;
procedure FuncE;
const
s1 : array[0..3, 0..15] of string[4] =
(('1110','0100','1101','0001','0010','1111','1011','1000','0011','1010','0110','1100','0101','1001','0000','0111'),
('0000','1111','0111','0100','1110','0010','1101','0001','1010','0110','1100','1011','1001','0101','0011','1000'),
('0100','0001','1110','1000','1001','0110','0010','1011','1111','1100','1001','0111','0011','1010','0101','0000'),
('1111','1100','1000','0010','0100','1001','0001','0111','0101','1011','0011','1110','1010','0000','1001','1101'));
s2 : array[0..3, 0..15] of string[4] =
(('1111','0001','1000','1110','0110','1011','0011','0100','1001','0111','0010','1101','1100','0000','0101','1010'),
('0011','1101','0100','0111','1111','0010','1000','1110','1100','0000','0001','1010','0110','1001','1011','0101'),
('0000','1110','0111','1011','1010','0100','1101','0001','0101','1000','1100','0110','1001','0011','0010','1111'),
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