#include?
#include?
#define?key?3000????????????????????????????????????????/*?64-bit?Key??????????*/
#define?iv?3000
static?int?m[4000][8]b[500][64]count;
static?int?L[32]R[32]K[16][48]F[32];

//input
void?convert_in（）??????????????????????????????????????/*?Convert?characters??*/
{?FILE?*pi;????????????????????????????????????????????/*?to?“0“?and?“1“?bit??*/
??int?ijxp;?????????????????????????????????????????/*?stream?by?ASCII?????*/
??
??pi=fopen（“plaintext?for?Test.dat““r“）;
??
??count=0;
??x=1;
??while?（x!=EOF）
????????{?x=fgetc（pi）;
??????????putchar（x）;??????????????????????????????????/*?Get?the?plaintext???*/
??????????p=1;
??????????for?（i=0;i<=7;i++）
??????????????{?m[count][i]=x?&?p;?????????????????????/*?Each?character??????*/
????????????????p=p*2;?????????????????????????????????/*?contains?8?bits?????*/
????????????????if?（m[count][i]!=0）
????????????????????m[count][i]=1;
????????????????b[count/8][8*（count%8）+i]=m[count][i];?/*?Each?block?contains?*/
??????????????}????????????????????????????????????????/*?8?characters=64?bits*/
??????????count+=1;
?????????}
???count=count-2;
???while?（（count%8）!=?0）???????????????????????????????/*?Append?“space“:?padding?*/
?????????{?for?（i=0;i<=7;i++）??????????????????????????/*?character?to?obtain?*/
???????????????b[count/8][8*（count%8）+i]=0;????????????/*?a?complete?block????*/
???????????b[count/8][8*（count%8）+5]=1;
???????????count+=1;
?????????}
????fclose（pi）;
}

//output
void?convert_out（）????????????????????????????????????/*?Convert?“0“?and?“1“??*/
{?????????????????????????????????????????????????????/*?bit?stream?to????????*/
??int?ixpjna;??????????????????????????????????????/*?characters???????????*/

??for?（i=0;i??????for?（j=0;j<=7;j++）
??????????for?（n=0;n<=7;n++）
???????????????m[i*8+j][n]=b[i][j*8+n];
??for?（i=0;i??????{?p=1;
????????x=0;
????????for?（j=0;j<=7;j++）??????????????????/*?Convert?binary?to?decimal?int??*/
????????????{?a=m[i][j]*p;
??????????????p=p*2;
??????????????x=x+a;
????????????}
????????putchar（x）;??????????????????????????????????/*?Output?the?ciphertext?*/
??????}
???printf（“\n“）;
}

//IP
void?IP（sT）????????????????????????????????????????/*?Initial?permutation?and*/
int?sT[64];????????????????????????????????????????/*?inverse?permutation????*/
{?int?ia[64]P[64];
??FILE?*pi;

??if?（s==1）
?????pi=fopen（“IP.dat““r“）;?????????????????????????/*?Initial?permutation???*/
??if?（s==-1）?????????????????????????????????????????/*?table?and?inverse?????*/
?????pi=fopen（“IP_inv.dat““r“）;?????????????????????/*?initial?permutation???*/
?????????????????????????????????????????????????????/*?table?????????????????*/
??for?（i=0;i<=63;i++）
??????{?fscanf（pi“%d“&P[i]）;
????????a[i]=T[i];
????????//printf（“%d?\n“P[i]）;
??????}
??for?（i=0;i<=63;i++）
??????T[i]=a[P[i]-1];
??????//printf（“%d?\n“T[i]）;
??fclose（pi）;
}

//Round?F
void?f（RT）??????????????????????????????????????????/*?Function?f（RiKi

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????9039??2017-05-12?18:51??DES?加解密演算法\CBC.c

?????文件?????140433??2017-05-12?18:51??DES?加解密演算法\CBC.exe

?????文件???????8559??2017-05-12?18:40??DES?加解密演算法\CFB.c

?????文件?????139409??2017-05-12?18:41??DES?加解密演算法\CFB.exe

?????文件???????8612??2017-05-12?19:09??DES?加解密演算法\CTR.c

?????文件?????139409??2017-05-12?19:16??DES?加解密演算法\CTR.exe

?????文件????????130??1998-11-23?23:08??DES?加解密演算法\E.dat

?????文件???????8427??2017-05-12?18:18??DES?加解密演算法\ENDES.c

?????文件?????138897??2017-05-12?18:19??DES?加解密演算法\ENDES.exe

?????文件????????185??1998-11-23?23:08??DES?加解密演算法\IP.dat

?????文件????????184??1998-11-23?23:08??DES?加解密演算法\IP_inv.dat

?????文件?????????32??1998-11-23?23:08??DES?加解密演算法\keyshift.dat

?????文件???????8557??2017-05-12?19:07??DES?加解密演算法\OFB.c

?????文件?????139409??2017-05-12?19:07??DES?加解密演算法\OFB.exe

?????文件?????????87??1998-11-23?23:08??DES?加解密演算法\P.dat

?????文件????????161??1998-11-23?23:08??DES?加解密演算法\PC_1.dat

?????文件????????136??1998-11-23?23:08??DES?加解密演算法\PC_2.dat

?????文件????????784??1998-11-23?23:08??DES?加解密演算法\plaintext?for?Test.dat

?????文件???????1544??1998-11-23?23:08??DES?加解密演算法\sbox.dat

?????目錄??????????0??2019-02-06?22:44??DES?加解密演算法

-----------?---------??----------?-----??----

???????????????743994????????????????????20