Использование современных симметрических (DES) и асимметрических (RSA) алгоритмов шифрования

Курсовой проект - Компьютеры, программирование

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> if Form1.RadioButton7.Checked=true then

begin

Wifrovanie_RSA(Ka, P, Q, 500RSA.txt,RSA_crypted\Z_500_RSA.txt,Kb);

razmer:=1024*500;

end;

if Form1.RadioButton6.Checked=true then

begin

Wifrovanie_RSA(Ka, P, Q, 1RSA.txt,RSA_crypted\Z_1_RSA.txt,Kb);

razmer:=1024*1024;

end;

 

t2:=Time;

end;

 

Label13.Caption := IntToStr(Ka);; //Vivodin Ka

Label12.Caption := IntToStr(Kb); //Vivodim Kb

 

vremja:=round((t2 - (t1+0.0000001))*24*60*60*1000);

Label33.Caption := (IntToStr(vremja-round(0.0000001)))+ милисек;

 

Label34.Caption := FloatToStr((razmer/vremja)-0.0000001)+байт/милисек;

end;

 

//Raswifrovat faili klju4om Ka1

procedure TForm1.Button16Click(Sender: TObject);

var

Ka:int64;

Kb:int64;

Q,P:int64;

i:integer;

ish_f,vihod_f:TextFile;

t1,t2:TDateTime;

vremja:integer;

razmer:integer;

begin

 

P:= StrToInt(Edit5.Text); //S4itivaem P

Q:= StrToInt(Edit4.Text); //S4itivaem Q

 

-1)then">if(ListBox3.ItemIndex <> -1) then

begin

Ka:= StrToInt(ListBox3.Items[ListBox3.ItemIndex]);//Opredeljaem sly4ainim obrazom Ka

Kb:=StrToInt(Label12.Caption);

 

t1:=Time;

 

if Form1.RadioButton10.Checked=true then

begin

Raswifrovanie_RSA(Kb,P,Q,RSA_crypted\Z_20_RSA.txt,RSA_uncrypted\R_20_RSA.txt);

razmer:=1024*20;

end;

if Form1.RadioButton9.Checked=true then

begin

Raswifrovanie_RSA(Kb,P,Q,RSA_crypted\Z_50_RSA.txt,RSA_uncrypted\R_50_RSA.txt);

razmer:=1024*20;

end;

if Form1.RadioButton8.Checked=true then

begin

Raswifrovanie_RSA(Kb,P,Q,RSA_crypted\Z_100_RSA.txt,RSA_uncrypted\R_100_RSA.txt);

razmer:=1024*20;

end;

if Form1.RadioButton7.Checked=true then

begin

Raswifrovanie_RSA(Kb,P,Q,RSA_crypted\Z_500_RSA.txt,RSA_uncrypted\R_500_RSA.txt);

razmer:=1024*20;

end;

if Form1.RadioButton6.Checked=true then

begin

Raswifrovanie_RSA(Kb,P,Q,RSA_crypted\Z_1_RSA.txt,RSA_uncrypted\R_1_RSA.txt);

razmer:=1024*20;

end;

t2:=Time;

end;

 

vremja:=round((t2 - t1)*24*60*60)+1;

Label33.Caption := IntToStr(vremja-1)+ милисек;

 

Label34.Caption := FloatToStr((razmer/vremja)-1)+байт/сек;

end;

 

end.

 

 

 

 

Подключаемые модули

 

unit DES_ECB_CBC_unit;

 

interface

 

procedure Wifrovanie_ECB(nazv_ish_f:string;nazv_vih_f:string);

procedure Raswifrovanie_ECB(nazv_ish_f:string;nazv_vih_f:string);

procedure Wifrovanie_CBC(nazv_ish_f:string;nazv_vih_f:string;vektor:string);

procedure Raswifrovanie_CBC(nazv_ish_f:string;nazv_vih_f:string;vektor:string);

 

implementation

uses DES_unit;

 

 

procedure Wifrovanie_ECB(nazv_ish_f:string;nazv_vih_f:string);

var

i:integer;

ish_text,vihod_text:string;

bykva:byte;

ish_f,vihod_f:file of byte;

begin

 

assignfile(ish_f,nazv_ish_f);

reset(ish_f);

 

assignfile(vihod_f,nazv_vih_f);

rewrite(vihod_f);

while not EOF(ish_f) do

begin

read(ish_f,bykva);

ish_text:=ish_text+chr(bykva);

if Length(ish_text) = 8 then

begin

vihod_text:= Kodirovat(ish_text);

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

ish_text := ;

end;

end;

 

if(Length(ish_text) <> 0) then

begin

while length(ish_text)<8 do

ish_text:=ish_text+0;

vihod_text := Kodirovat(ish_text);

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

end;

 

end;

procedure Raswifrovanie_ECB(nazv_ish_f:string;nazv_vih_f:string);

var

i:integer;

ish_text,vihod_text:string;

bykva:byte;

ish_f,vihod_f:file of byte;

begin

 

assignfile(ish_f,nazv_ish_f);

reset(ish_f);

 

assignfile(vihod_f,nazv_vih_f);

rewrite(vihod_f);

 

while not EOF(ish_f) do

begin

read(ish_f,bykva);

ish_text:=ish_text+chr(bykva);

if Length(ish_text) = 8 then

begin

vihod_text:= Raskodirovat(ish_text);

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

ish_text := ;

end;

end;

if(Length(ish_text) <> 0) then

begin

while length(ish_text)<8 do

ish_text:=ish_text+0;

vihod_text := Raskodirovat(ish_text);

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

end;

 

end;

 

procedure Wifrovanie_CBC(nazv_ish_f:string;nazv_vih_f:string;vektor:string);

var

i:integer;

ish_text,vihod_text:string;

bykva:byte;

ish_f,vihod_f:file of byte;

begin

 

assignfile(ish_f,nazv_ish_f);

reset(ish_f);

 

assignfile(vihod_f,nazv_vih_f);

rewrite(vihod_f);

 

while not EOF(ish_f) do

begin

read(ish_f,bykva);

ish_text:=ish_text+chr(bykva);

if Length(ish_text) = 8 then

begin

for i:=1 to 8 do

ish_text[i]:=chr(ord(ish_text[i]) xor ord(vektor[i]));

vihod_text:= Kodirovat(ish_text);

vektor := vihod_text;

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

ish_text := ;

end;

end;

 

if(Length(ish_text) <> 0) then

begin

while length(ish_text)<8 do

ish_text:=ish_text+0;

for i:=1 to 8 do

ish_text[i] := chr(ord(ish_text[i]) xor ord(vektor[i]));

vihod_text := Kodirovat(ish_text);

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

end;

 

end;

 

procedure Raswifrovanie_CBC(nazv_ish_f:string;nazv_vih_f:string;vektor:string);

var

i:integer;

ish_text,vihod_text,tmp:string;

bykva:byte;

ish_f,vihod_f:file of byte;

begin

 

assignfile(ish_f,nazv_ish_f);

reset(ish_f);

 

assignfile(vihod_f,nazv_vih_f);

rewrite(vihod_f);

 

while not EOF(ish_f) do

begin

read(ish_f,bykva);

ish_text:=ish_text+chr(bykva);

if Length(ish_text) = 8 then

begin

tmp := ish_text;

vihod_text:= Raskodirovat(ish_text);

for i:=1 to 8 do

vihod_text[i] := chr(ord(vihod_text[i]) xor ord(vektor[i]));

vektor := tmp;

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

ish_text := ;

end;

end;

 

if(Length(ish_text) <> 0) then

begin

while length(ish_text)<8 do

ish_text:=ish_text+0;

tmp := ish_text;

vihod_text:= Raskodirovat(ish_text);

for i:=1 to 8 do

vihod_text[i] := chr(ord(vihod_text[i]) xor ord(vektor[i]));

vektor := tmp;

for i:=1 to 8 do

begin

bykva:=byte(vihod_text[i]);

write(vihod_f,bykva);

end;

end;

 

end;

 

end.

 

 

unit DES_unit;

 

interface

 

type odnom_1_64=array[1..64] of byte;

type odnom_1_56=array[1..56] of byte;

type odnom_1_48=array[1..48] of byte;

type odnom_1_32=array[1..32] of byte;

type dvym_1_17_1_32=array[1..17,1..32] of byte;

type dvym_1_17_1_28=array[1..17,1..28] of byte;

type dvym_1_16_1_48=array[1..16,1..48] of byte;//16 подключей

 

procedure Perestanovka_IP (var Klju4_64_posle_IP: odnom_1_64);

procedure Perestanovka_E (n:integer; Tekst_32_do_E: dvym_1_17_1_32; var Tekst_48_posle_E: odnom_1_48);

procedure Perestanovka_P(var Tekst_32_posle_P:odnom_1_32);

procedure S_Blok (e: odnom_1_48; var p: odnom_1_32);

procedure Perestanovka_IP_1 (var Tekst_64_posle_IP1: odnom_1_64);

 

procedure TextVBinarn (Tekst_bykv: string; var Tekst_64_binar: odnom_1_64);

procedure BinarnVText(Tekst_64_binar: odnom_1_64;var Tekst_bykv: string);

function Kodirovat(Ish_tekst_bykv:string):string;

function Raskodirovat(Wifr_tekst_bykv:string):string;

 

implementation

 

uses podkluchi_un