维吉尼亚算法完结篇

#include<stdio.h>
#include<string.h>

#define SIZE 100

char keyA[SIZE],keyB[SIZE],key[SIZE],cKey[SIZE];
char plaintext1A[SIZE]={0},plaintext1[SIZE]={0};
char ciphertext1[SIZE]={0};

char plaintext2[SIZE]={0};
char ciphertext2[SIZE]={0};
char ciphertext2A[SIZE]={0};

void GetKey() {
printf("请输入密钥");
scanf("%s",keyA);
int i,j;
for (i=0,j=0;keyA[i]!='\0';i++,j++)    
{
keyB[j]=keyA[i];
if (keyB[j]>='A' && keyB[j]<='Z')
keyB[j]=keyA[j]+32;
key[j]=keyB[j];     
}
}

void CiKeyToCKey() {
int i;
int j=0;
for(i=0; i<strlen(plaintext1); i++) {

 if(key[j]=='\0') {
 j=0;
 } 
 cKey[i] = key[j];
 j++;
}
}

void PKeyToCKey() {
int i;
int j=0;
for(i=0; i<strlen(ciphertext2); i++) {
 if(key[j]=='\0') {
 j=0;
 } 
 cKey[i] = key[j];
 j++;
}
}

void GetPlainText(){
printf("请输入明文");
getchar();
gets(plaintext1A);
int i;
for(i=0;i<SIZE;i++)     
{
if (plaintext1A[i]>='A'&& plaintext1A[i]<='Z')     
plaintext1[i]=plaintext1A[i]+32;     
else