用perl实现的des算法
2016-02-03 15:31
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#!/usr/bin/perl -w
use strict;
use warnings;
# final
my (@PC1,@PC_1,@PC2,@E,@S,@Y,@C,@H);
#variable
my ($une,$pwd,$magicnum,$iv,@pc,@keyset);
@Y=(56, 48, 40, 32, 24, 16, 8,
0, 57, 49, 41,33, 25, 17,
9, 1, 58, 50, 42, 34, 26,
18, 10, 2, 59, 51, 43, 35,
62, 54, 46, 38, 30, 22, 14,
6, 61, 53, 45, 37, 29, 21,
13, 5, 60,52, 44, 36, 28,
20, 12, 4, 27, 19, 11, 3);
@PC1=(57,49,41,33,25,17,9,1,
59,51,43,35,27,19,11,3,
61,53,45,37,29,21,13,5,
63,55,47,39,31,23,15,7,
56,48,40,32,24,16,8,0,
58,50,42,34,26,18,10,2,
60,52,44,36,28,20,12,4,
62,54,46,38,30,22,14,6);
@PC_1=(39,7,47,15,55,23,63,31,
38,6,46,14,54,22,62,30,
37,5,45,13,53,21,61,29,
36,4,44,12,52,20,60,28,
35,3,43,11,51,19,59,27,
34,2,42,10,50,18,58,26,
33,1,41,9,49,17,57,25,
32,0,40,8,48,16,56,24);
@E=(31,0,1,2,3,4,
3,4,5,6,7,8,
7,8,9,10,11,12,
11,12,13,14,15,16,
15,16,17,18,19,20,
19,20,21,22,23,24,
23,24,25,26,27,28,
27,28,29,30,31,0);
@C=(1, 2, 4, 6,
8, 10, 12, 14,
15, 17, 19,21,
23, 25, 27, 28 );
@S=(##S1
[14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7,
0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8,
4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0,
15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13],
##S2
[15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10,
3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5,
0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15,
13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9],
##S3
[10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8,
13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1,
13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7,
1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12],
##S4
[7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15,
13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9,
10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4,
3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14],
##S5
[2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9,
14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6,
4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14,
11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3],
##S6
[12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11,
10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8,
9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6,
4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13],
##S7
[4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1,
13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6,
1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2,
6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12],
##S8
[13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7,
1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2,
7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8,
2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11]
);
@H=(13, 16, 10, 23, 0, 4,
2, 27, 14, 5, 20,9,
22, 18, 11, 3, 25, 7,
15, 6, 26, 19, 12, 1,
40, 51, 30, 36, 46,54,
29, 39, 50, 44, 32, 47,
43, 48, 38, 55, 33, 52,
45, 41, 49, 35,28, 31 );
@PC2=(15,6,19,20,28,11,27,16,
0,14,22,25,4,17,30,9,
1,7,23,13,31,26,2,8,
18,12,29,5,21,10,3,24);
$une = "mail139";
$pwd = "12345";
$magicnum = pack "H*","0123456789abcdef";
$iv = pack "H*","0000000000000000";
@keyset = ();
# pretreatemnt the text
sub preHandlePlain{
my ($text,@param,@bytes)=(shift);
$text=~s/(.)/chr(0).uc($1)/ge;
@param = split //,$text;
if(@param%8!=0){
@param=(@param,(chr(0),chr(0),chr(0),chr(0),chr(0),chr(0),chr(0),chr(0))[0..7-@param%8])
}
foreach my $i(0..@param-1){
foreach my $j(0..7){
$bytes[$i*8+$j]=((ord($param[$i])&1<<7-$j)>0?1:0);
#printf $bytes[$i*8+$j];
}
}
return @bytes;
}
# translate hex string into bytes
sub hexstrToBytes{
my (@param,@bytes)=(split //,shift);
foreach my $i(0..@param-1){
foreach my $j(0..7){
$bytes[$i*8+$j]=((ord($param[$i])&1<<7-$j)>0?1:0);
#printf $bytes[$i*8+$j];
}
}
return @bytes;
}
# deal with each block
sub eachBlock{
my ($flg,@tempkey,@byte1,@left,@right,@temp,@result)=(shift,@_);
##PC-1 subsitute
@byte1=map{$tempkey[$PC1[$_]]}(0..63);
##each round
@left=@byte1[0..31];
@right=@byte1[32..63];
for my $ii (0..15){
my $rnd = ($flg==0?$ii:15-$ii);
my @b1=@right;
my @b2=funF($rnd,@right);
@right=map{$left[$_]^$b2[$_]}(0..31);
@left=@b1;
}
@temp=(@right,@left);
##PC-1 subsitute
$result[$_]=$temp[$PC_1[$_]]for(0..63);
return @result;
}
sub genKey{
my @tempkey = @_;
my @byte1;
my @byte2;
for my $i (0..55){
$byte1[$i]=$tempkey[$Y[$i]];
}
for my $i (0..15){
my $mov = $C[$i];
for my $j (0..47){
my $temp=$H[$j];
## $temp = 26
if($temp<28){
## $temp = 26 , $mov =1
if($temp+$mov<28){
$byte2[$j]=$byte1[$temp+$mov];
}
## $temp = 26 , $mov =3
else{
$byte2[$j]=$byte1[$temp+$mov-28];
}
}
## $temp = 53
else{
## $temp = 53,$mov =2
if($temp+$mov<56){
$byte2[$j]=$byte1[$temp+$mov];
}
## $temp = 53,$mov =5
else{
$byte2[$j]=$byte1[$temp+$mov-28];
}
}
}
$keyset[$i]=[@byte2];
}
}
sub funF{
my($rnd,@right,@temp,@byte1,@byte2)=(shift,@_);
## expand the right key and xor with the subkey
@temp=map{$right[$E[$_]]^$keyset[$rnd][$_] }(0..47);
##S box substitute
for(0..7){
my $row=$temp[$_*6]*2+$temp[$_*6+5];
my $col=$temp[$_*6+1]*8+$temp[$_*6+2]*4+$temp[$_*6+3]*2+$temp[$_*6+4];
$byte1[$_*4] = ($S[$_][$row*16+$col]&8)>0?1:0;
$byte1[$_*4+1] = ($S[$_][$row*16+$col]&4)>0?1:0;
$byte1[$_*4+2] = ($S[$_][$row*16+$col]&2)>0?1:0;
$byte1[$_*4+3] = ($S[$_][$row*16+$col]&1)>0?1:0;
}
## p box substitute
$byte2[$_]=$byte1[$PC2[$_]]for(0..31);
return @byte2;
}
#encrypt
sub desEncrypt{
my ($flg,@temp,@b0,@b2)=(shift,@_);
@b0=hexstrToBytes($iv);
for(0..@temp/64-1){
my @b1 = @temp[$_*64..($_*64+63)];
@b0 = map{$b0[$_]^$b1[$_]}(0..63);
## 0 encrypt ,1 decrypt
@b0=eachBlock(0,@b0);
if($flg==0){
@b2=(@b2,@b0);
}
}
if($flg==1){
return @b0;
}
else{
return @b2;
}
}
#decrypt
sub desDecrypt{
my ($flg,@temp,@b0,@b2,@b3)=(shift,@_);
@b0=hexstrToBytes($iv);
for(0..@temp/64-1){
my @b1 = @temp[$_*64..($_*64+63)];
@b3=eachBlock(1,@b1);
@b3 = map{$b0[$_]^$b3[$_]}(0..63);
## 0 encrypt ,1 decrypt
@b0=@b1;
if($flg==0){
@b2=(@b2,@b3);
}
}
if($flg==1){
return @b3;
}
else{
return @b2;
}
}
sub getPwdHash{
#16 rounds of generate key
genKey(hexstrToBytes($magicnum));
my @temp1=preHandlePlain($une.$pwd);
my @result = desE
4000
ncrypt(0,@temp1);
genKey(@result[@result-64..@result-64+63]);
my $str;
($str.=$result[$_])for(0..@result-1);
$str=~s/([01]{4})/unpack("H",pack("B4",$1))/ge;
printf "getPwdHash -> %s\n",$str;
$str="";
my @result1 = desEncrypt(0,@temp1);
($str.=$result1[$_])for(0..@result1-1);
$str=~s/([01]{4})/unpack("H",pack("B4",$1))/ge;
printf "getPwdHash -> %s\n",$str;
}
sub getDec{
genKey(hexstrToBytes(pack("H*","a60228af1437c0b5")));
my @result = desDecrypt(0,hexstrToBytes(pack("H*","005c0b27184dff90355eed8d814784cf35b80dfeb685e590")));
my $str;
($str.=$result[$_])for(0..@result-1);
#my $str="1111000011011001";
$str=~s/([01]{4})/unpack("H",pack("B4",$1))/ge;
printf "desdecrypt -> %s\n",$str;
}
getPwdHash();
getDec();
use strict;
use warnings;
# final
my (@PC1,@PC_1,@PC2,@E,@S,@Y,@C,@H);
#variable
my ($une,$pwd,$magicnum,$iv,@pc,@keyset);
@Y=(56, 48, 40, 32, 24, 16, 8,
0, 57, 49, 41,33, 25, 17,
9, 1, 58, 50, 42, 34, 26,
18, 10, 2, 59, 51, 43, 35,
62, 54, 46, 38, 30, 22, 14,
6, 61, 53, 45, 37, 29, 21,
13, 5, 60,52, 44, 36, 28,
20, 12, 4, 27, 19, 11, 3);
@PC1=(57,49,41,33,25,17,9,1,
59,51,43,35,27,19,11,3,
61,53,45,37,29,21,13,5,
63,55,47,39,31,23,15,7,
56,48,40,32,24,16,8,0,
58,50,42,34,26,18,10,2,
60,52,44,36,28,20,12,4,
62,54,46,38,30,22,14,6);
@PC_1=(39,7,47,15,55,23,63,31,
38,6,46,14,54,22,62,30,
37,5,45,13,53,21,61,29,
36,4,44,12,52,20,60,28,
35,3,43,11,51,19,59,27,
34,2,42,10,50,18,58,26,
33,1,41,9,49,17,57,25,
32,0,40,8,48,16,56,24);
@E=(31,0,1,2,3,4,
3,4,5,6,7,8,
7,8,9,10,11,12,
11,12,13,14,15,16,
15,16,17,18,19,20,
19,20,21,22,23,24,
23,24,25,26,27,28,
27,28,29,30,31,0);
@C=(1, 2, 4, 6,
8, 10, 12, 14,
15, 17, 19,21,
23, 25, 27, 28 );
@S=(##S1
[14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7,
0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8,
4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0,
15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13],
##S2
[15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10,
3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5,
0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15,
13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9],
##S3
[10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8,
13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1,
13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7,
1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12],
##S4
[7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15,
13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9,
10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4,
3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14],
##S5
[2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9,
14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6,
4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14,
11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3],
##S6
[12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11,
10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8,
9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6,
4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13],
##S7
[4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1,
13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6,
1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2,
6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12],
##S8
[13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7,
1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2,
7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8,
2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11]
);
@H=(13, 16, 10, 23, 0, 4,
2, 27, 14, 5, 20,9,
22, 18, 11, 3, 25, 7,
15, 6, 26, 19, 12, 1,
40, 51, 30, 36, 46,54,
29, 39, 50, 44, 32, 47,
43, 48, 38, 55, 33, 52,
45, 41, 49, 35,28, 31 );
@PC2=(15,6,19,20,28,11,27,16,
0,14,22,25,4,17,30,9,
1,7,23,13,31,26,2,8,
18,12,29,5,21,10,3,24);
$une = "mail139";
$pwd = "12345";
$magicnum = pack "H*","0123456789abcdef";
$iv = pack "H*","0000000000000000";
@keyset = ();
# pretreatemnt the text
sub preHandlePlain{
my ($text,@param,@bytes)=(shift);
$text=~s/(.)/chr(0).uc($1)/ge;
@param = split //,$text;
if(@param%8!=0){
@param=(@param,(chr(0),chr(0),chr(0),chr(0),chr(0),chr(0),chr(0),chr(0))[0..7-@param%8])
}
foreach my $i(0..@param-1){
foreach my $j(0..7){
$bytes[$i*8+$j]=((ord($param[$i])&1<<7-$j)>0?1:0);
#printf $bytes[$i*8+$j];
}
}
return @bytes;
}
# translate hex string into bytes
sub hexstrToBytes{
my (@param,@bytes)=(split //,shift);
foreach my $i(0..@param-1){
foreach my $j(0..7){
$bytes[$i*8+$j]=((ord($param[$i])&1<<7-$j)>0?1:0);
#printf $bytes[$i*8+$j];
}
}
return @bytes;
}
# deal with each block
sub eachBlock{
my ($flg,@tempkey,@byte1,@left,@right,@temp,@result)=(shift,@_);
##PC-1 subsitute
@byte1=map{$tempkey[$PC1[$_]]}(0..63);
##each round
@left=@byte1[0..31];
@right=@byte1[32..63];
for my $ii (0..15){
my $rnd = ($flg==0?$ii:15-$ii);
my @b1=@right;
my @b2=funF($rnd,@right);
@right=map{$left[$_]^$b2[$_]}(0..31);
@left=@b1;
}
@temp=(@right,@left);
##PC-1 subsitute
$result[$_]=$temp[$PC_1[$_]]for(0..63);
return @result;
}
sub genKey{
my @tempkey = @_;
my @byte1;
my @byte2;
for my $i (0..55){
$byte1[$i]=$tempkey[$Y[$i]];
}
for my $i (0..15){
my $mov = $C[$i];
for my $j (0..47){
my $temp=$H[$j];
## $temp = 26
if($temp<28){
## $temp = 26 , $mov =1
if($temp+$mov<28){
$byte2[$j]=$byte1[$temp+$mov];
}
## $temp = 26 , $mov =3
else{
$byte2[$j]=$byte1[$temp+$mov-28];
}
}
## $temp = 53
else{
## $temp = 53,$mov =2
if($temp+$mov<56){
$byte2[$j]=$byte1[$temp+$mov];
}
## $temp = 53,$mov =5
else{
$byte2[$j]=$byte1[$temp+$mov-28];
}
}
}
$keyset[$i]=[@byte2];
}
}
sub funF{
my($rnd,@right,@temp,@byte1,@byte2)=(shift,@_);
## expand the right key and xor with the subkey
@temp=map{$right[$E[$_]]^$keyset[$rnd][$_] }(0..47);
##S box substitute
for(0..7){
my $row=$temp[$_*6]*2+$temp[$_*6+5];
my $col=$temp[$_*6+1]*8+$temp[$_*6+2]*4+$temp[$_*6+3]*2+$temp[$_*6+4];
$byte1[$_*4] = ($S[$_][$row*16+$col]&8)>0?1:0;
$byte1[$_*4+1] = ($S[$_][$row*16+$col]&4)>0?1:0;
$byte1[$_*4+2] = ($S[$_][$row*16+$col]&2)>0?1:0;
$byte1[$_*4+3] = ($S[$_][$row*16+$col]&1)>0?1:0;
}
## p box substitute
$byte2[$_]=$byte1[$PC2[$_]]for(0..31);
return @byte2;
}
#encrypt
sub desEncrypt{
my ($flg,@temp,@b0,@b2)=(shift,@_);
@b0=hexstrToBytes($iv);
for(0..@temp/64-1){
my @b1 = @temp[$_*64..($_*64+63)];
@b0 = map{$b0[$_]^$b1[$_]}(0..63);
## 0 encrypt ,1 decrypt
@b0=eachBlock(0,@b0);
if($flg==0){
@b2=(@b2,@b0);
}
}
if($flg==1){
return @b0;
}
else{
return @b2;
}
}
#decrypt
sub desDecrypt{
my ($flg,@temp,@b0,@b2,@b3)=(shift,@_);
@b0=hexstrToBytes($iv);
for(0..@temp/64-1){
my @b1 = @temp[$_*64..($_*64+63)];
@b3=eachBlock(1,@b1);
@b3 = map{$b0[$_]^$b3[$_]}(0..63);
## 0 encrypt ,1 decrypt
@b0=@b1;
if($flg==0){
@b2=(@b2,@b3);
}
}
if($flg==1){
return @b3;
}
else{
return @b2;
}
}
sub getPwdHash{
#16 rounds of generate key
genKey(hexstrToBytes($magicnum));
my @temp1=preHandlePlain($une.$pwd);
my @result = desE
4000
ncrypt(0,@temp1);
genKey(@result[@result-64..@result-64+63]);
my $str;
($str.=$result[$_])for(0..@result-1);
$str=~s/([01]{4})/unpack("H",pack("B4",$1))/ge;
printf "getPwdHash -> %s\n",$str;
$str="";
my @result1 = desEncrypt(0,@temp1);
($str.=$result1[$_])for(0..@result1-1);
$str=~s/([01]{4})/unpack("H",pack("B4",$1))/ge;
printf "getPwdHash -> %s\n",$str;
}
sub getDec{
genKey(hexstrToBytes(pack("H*","a60228af1437c0b5")));
my @result = desDecrypt(0,hexstrToBytes(pack("H*","005c0b27184dff90355eed8d814784cf35b80dfeb685e590")));
my $str;
($str.=$result[$_])for(0..@result-1);
#my $str="1111000011011001";
$str=~s/([01]{4})/unpack("H",pack("B4",$1))/ge;
printf "desdecrypt -> %s\n",$str;
}
getPwdHash();
getDec();
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