Tea加密算法实现
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unsigned long a=k[0], b=k[1], c=k[2], d=k[3];
for (i=0; i < 32; i++) {
sum += delta;
y += ((z<<4) + a) ^ (z + sum) ^ ((z>>5) + b);
z += ((y<<4) + c) ^ (y + sum) ^ ((y>>5) + d);
y2=(unsigned long *)&de[i+4];
encrypt(y1,y2,key);/*加密*/
}
printf("密文:");
for (i=0;i<32;i++)
printf("%2x",(unsigned char)de[i]);
printf("\n");
for (i=0;i<32;i+=8)
}
*v1=y;
*v2=z;
}
void decrypt(unsigned long *v1,unsigned long *v2, unsigned long *k) {
unsigned long y=*v1, z=*v2, sum=0xC6EF3720, i;
unsigned long delta=0x9e3779b9;
sum -= delta;
}
*v1=y;
*v2=z;
}
程序运行结果：
工程硕士96
罗振一
printf("请输入源串，长度小于或等于32个英文字符:");
scanf("%s",or);
j=strlen(or);
for (i=j;;
for (i=0;i<32;i++) de[i]=or[i];
for (i=0;i<32;i+=8)
{
y1=(unsigned long *)&de[i];
Tea加密算法实现
源程序：
#include<stdio.h>
#include<string.h>
void encrypt(unsigned long *v1, unsigned long *v2,unsigned long *k);/*加密函数定义*/
void decrypt(unsigned long *v1,unsigned long *v2, unsigned long *k);/*解密函数定义*/
printf("\n解密后的密钥：%s\n",de);
}
void encrypt(unsigned long *v1, unsigned long *v2,unsigned long *k) {
unsigned long y=*v1, z=*v2, sum=0, i;
unsigned long delta=0x9e3779b9;
unsigned long *key = (unsigned long *)"1234567890abcde\0";/*常量密钥*/
void main()
{
char or[32],de[32];
int i,j,k;
unsigned long *y1,*y2;
printf("常量密钥：%s\n",(char *)key);
unsigned long a=k[0], b=k[1], c=k[2], d=k[3];
for(i=0; i<32; i++) {
z -= ((y<<4) + c) ^ (y + sum) ^ ((y>>5) + d);
y -= ((z<<4) + a) ^ (z + sum) ^ ((z>>5) + b);
{
y1=(unsigned long *)&de[i];
y2=(unsigned long *)&de[i+4];
decrypt(y1,y2,key);/*解密*/
}
printf("解密后：");
for (i=0;i<32;i++)
printf("%2x",(unsigned char)de[i]);
for (i=0; i < 32; i++) {
sum += delta;
y += ((z<<4) + a) ^ (z + sum) ^ ((z>>5) + b);
z += ((y<<4) + c) ^ (y + sum) ^ ((y>>5) + d);
y2=(unsigned long *)&de[i+4];
encrypt(y1,y2,key);/*加密*/
}
printf("密文:");
for (i=0;i<32;i++)
printf("%2x",(unsigned char)de[i]);
printf("\n");
for (i=0;i<32;i+=8)
}
*v1=y;
*v2=z;
}
void decrypt(unsigned long *v1,unsigned long *v2, unsigned long *k) {
unsigned long y=*v1, z=*v2, sum=0xC6EF3720, i;
unsigned long delta=0x9e3779b9;
sum -= delta;
}
*v1=y;
*v2=z;
}
程序运行结果：
工程硕士96
罗振一
printf("请输入源串，长度小于或等于32个英文字符:");
scanf("%s",or);
j=strlen(or);
for (i=j;;
for (i=0;i<32;i++) de[i]=or[i];
for (i=0;i<32;i+=8)
{
y1=(unsigned long *)&de[i];
Tea加密算法实现
源程序：
#include<stdio.h>
#include<string.h>
void encrypt(unsigned long *v1, unsigned long *v2,unsigned long *k);/*加密函数定义*/
void decrypt(unsigned long *v1,unsigned long *v2, unsigned long *k);/*解密函数定义*/
printf("\n解密后的密钥：%s\n",de);
}
void encrypt(unsigned long *v1, unsigned long *v2,unsigned long *k) {
unsigned long y=*v1, z=*v2, sum=0, i;
unsigned long delta=0x9e3779b9;
unsigned long *key = (unsigned long *)"1234567890abcde\0";/*常量密钥*/
void main()
{
char or[32],de[32];
int i,j,k;
unsigned long *y1,*y2;
printf("常量密钥：%s\n",(char *)key);
unsigned long a=k[0], b=k[1], c=k[2], d=k[3];
for(i=0; i<32; i++) {
z -= ((y<<4) + c) ^ (y + sum) ^ ((y>>5) + d);
y -= ((z<<4) + a) ^ (z + sum) ^ ((z>>5) + b);
{
y1=(unsigned long *)&de[i];
y2=(unsigned long *)&de[i+4];
decrypt(y1,y2,key);/*解密*/
}
printf("解密后：");
for (i=0;i<32;i++)
printf("%2x",(unsigned char)de[i]);