实验报告1Word格式.docx
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- 上传时间:2022-12-14
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实验报告1Word格式.docx
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inttemp;
temp=a;
a=b;
b=temp;
}
longn;
while((n=a%b)!
=0)
b=n;
returnb;
}
//---------------------------------------
longcheng_niyuan(longa,longb)
for(longi=1;
(i*a)%b!
=1;
i++);
returni;
intmi_mo(inta,intb,intn)
intK[100];
inttop=-1;
while(b)
top++;
K[top]=(b%2);
b/=2;
intc=0,f=1;
for(;
top>
=0;
top--)
c=2*c;
f=(f*f)%n;
if(K[top]==1)
c+=1;
f=(f*a)%n;
returnf;
intmain()
intp=5,q=11;
cout<
<
"
p="
p<
endl;
q="
q<
longintn=p*q;
n="
n<
longintfi_n=(p-1)*(q-1);
fi_n="
fi_n<
inte=3;
e="
e<
longd=cheng_niyuan(e,fi_n);
intM,C;
请输入明文:
cin>
>
M;
C=mi_mo(M,e,n);
对应的密文为:
C<
请输入密文:
C;
M=mi_mo(C,d,n);
对应的明文为:
M<
return0;
(1)RAS加密和解密
2)DES代码及实验结果
#include"
stdio.h"
memory.h"
time.h"
stdlib.h"
#definePLAIN_FILE_OPEN_ERROR-1
#defineKEY_FILE_OPEN_ERROR-2
#defineCIPHER_FILE_OPEN_ERROR-3
#defineOK1
typedefcharElemType;
/*初始置换表IP*/
intIP_Table[64]={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};
/*逆初始置换表IP^-1*/
intIP_1_Table[64]={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};
/*扩充置换表E*/
intE_Table[48]={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};
/*置换函数P*/
intP_Table[32]={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};
/*S盒*/
intS[8][4][16]=
/*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}}};
/*置换选择1*/
intPC_1[56]={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};
/*置换选择2*/
intPC_2[48]={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,
50,44,32,46,43,48,38,55,
33,52,45,41,49,35,28,31};
/*对左移次数的规定*/
intMOVE_TIMES[16]={1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};
intByteToBit(ElemTypech,ElemTypebit[8]);
intBitToByte(ElemTypebit[8],ElemType*ch);
intChar8ToBit64(ElemTypech[8],ElemTypebit[64]);
intBit64ToChar8(ElemTypebit[64],ElemTypech[8]);
intDES_MakeSubKeys(ElemTypekey[64],ElemTypesubKeys[16][48]);
intDES_PC1_Transform(ElemTypekey[64],ElemTypetempbts[56]);
intDES_PC2_Transform(ElemTypekey[56],ElemTypetempbts[48]);
intDES_ROL(ElemTypedata[56],inttime);
intDES_IP_Transform(ElemTypedata[64]);
intDES_IP_1_Transform(ElemTypedata[64]);
intDES_E_Transform(ElemTypedata[48]);
intDES_P_Transform(ElemTypedata[32]);
intDES_SBOX(ElemTypedata[48]);
intDES_XOR(ElemTypeR[48],ElemTypeL[48],intcount);
intDES_Swap(ElemTypeleft[32],ElemTyperight[32]);
intDES_EncryptBlock(ElemTypeplainBlock[8],ElemTypesubKeys[16][48],ElemTypecipherBlock[8]);
intDES_DecryptBlock(ElemTypecipherBlock[8],ElemTypesubKeys[16][48],ElemTypeplainBlock[8]);
intDES_Encrypt(char*plainFile,char*keyStr,char*cipherFile);
intDES_Decrypt(char*cipherFile,char*keyStr,char*plainFile);
/*字节转换成二进制*/
intByteToBit(ElemTypech,ElemTypebit[8]){
intcnt;
for(cnt=0;
cnt<
8;
cnt++){
*(bit+cnt)=(ch>
cnt)&
1;
/*二进制转换成字节*/
intBitToByte(ElemTypebit[8],ElemType*ch){
*ch|=*(bit+cnt)<
cnt;
/*将长度为8的字符串转为二进制位串*/
intChar8ToBit64(ElemTypech[8],ElemTypebit[64]){
cnt<
cnt++){
ByteToBit(*(ch+cnt),bit+(cnt<
3));
/*将二进制位串转为长度为8的字符串*/
intBit64ToChar8(ElemTypebit[64],ElemTypech[8]){
memset(ch,0,8);
BitToByte(bit+(cnt<
3),ch+cnt);
/*生成子密钥*/
intDES_MakeSubKeys(ElemTypekey[64],ElemTypesubKeys[16][48]){
ElemTypetemp[56];
DES_PC1_Transform(key,temp);
/*PC1置换*/
16;
cnt++){/*16轮跌代,产生16个子密钥*/
DES_ROL(temp,MOVE_TIMES[cnt]);
/*循环左移*/
DES_PC2_Transform(temp,subKeys[cnt]);
/*PC2置换,产生子密钥*/
/*密钥置换1*/
intDES_PC1_Transform(ElemTypekey[64],ElemTypetempbts[56]){
56;
tempbts[cnt]=key[PC_1[cnt]];
/*密钥置换2*/
intDES_PC2_Transform(ElemTypekey[56],ElemTypetempbts[48]){
48;
tempbts[cnt]=key[PC_2[cnt]];
intDES_ROL(ElemTypedata[56],inttime){
/*保存将要循环移动到右边的位*/
memcpy(temp,data,time);
memcpy(temp+time,data+28,time);
/*前28位移动*/
memcpy(data,data+time,28-time);
memcpy(data+28-time,temp,time);
/*后28位移动*/
memcpy(data+28,data+28+time,28-time);
memcpy(data+56-time,temp+time,time);
/*IP置换*/
intDES_IP_Transform(ElemTypedata[64]){
ElemTypetemp[64];
64;
temp[cnt]=data[IP_Table[cnt]];
memcpy(data,temp,64);
/*IP逆置换*/
intDES_IP_1_Transform(ElemTypedata[64]){
temp[cnt]=data[IP_1_Table[cnt]];
/*扩展置换*/
intDES_E_Transform(ElemTypedata[48]){
ElemTypetemp[48];
temp[cnt]=data[E_Table[cnt]];
memcpy(data,temp,48);
/*P置换*/
intDES_P_Transform(ElemTypedata[32]){
ElemTypetemp[32];
32;
temp[cnt]=data[P_Table[cnt]];
memcpy(data,temp,32);
/*异或*/
intDES_XOR(ElemTypeR[48],ElemTypeL[48],intcount){
count;
R[cnt]^=L[cnt];
/*S盒置换*/
intDES_SBOX(ElemTypedata[48]){
intline,row,output;
intcur1,cur2;
cur1=cnt*6;
cur2=cnt<
2;
/*计算在S盒中的行与列*/
line=(data[cur1]<
1)+data[cur1+5];
row=(data[cur1+1]<
3)+(data[cur1+2]<
2)
+(data[cur1+3]<
1)+data[cur1+4];
output=S[cnt][line][row];
/*化为2进制*/
data[cur2]=(output&
0X08)>
3;
data[cur2+1]=(output&
0X04)>
data[cur2+2]=(output&
0X02)>
data[cur2+3]=output&
0x01;
/*交换*/
intDES_Swap(ElemTypeleft[32],ElemTyperight[32]){
memcpy(temp,left,32);
memcpy(left,right,32);
memcpy(right,temp,32);
/*加密单个分组*/
intDES_EncryptBlock(ElemTypeplainBlock[8],ElemTypesubKeys[16][48],ElemTypecipherBlock[8]){
ElemTypeplainBits[64];
ElemTypecopyRight[48];
Char8ToBit64(plainBlock,plainBits);
/*初始置换(IP置换)*/
DES_IP_Transform(plainBits);
/*16轮迭代*/
memcpy(copyRight,plainBits+32,32);
/*将右半部分进行扩展置换,从32位扩展到48位*/
DES_E_Transform(copyRight);
/*将右半部分与子密钥进行异或操作*/
DES_XOR(copyRight,subKeys[cnt],48);
/*异或结果进入S盒,输出32位结果*/
DES_SBOX(copyRight);
/*P置换*/
DES_P_Transform(copyRight);
/*将明文左半部分与右半部分进行异或*/
DES_XOR(plainBits,copyRight,32);
if(cnt!
=15){
/*最终完成左右部的交换*/
DES_Swap(plainBits,plainBits+32);
/*逆初始置换(IP^1置换)*/
DES_IP_1_Transform(plainBits);
Bit64ToChar8(plainBits,cipherBlock);
/*解密单个分组*/
intDES_DecryptBlock(ElemTypecipherBlock[8],ElemTypesubKeys[16][48],ElemTypeplainBlock[8]){
ElemTypecipherBits[64];
Char8ToBit64(cipherBlock,cipherBits);
DES_IP_Transform(cipher
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