rc4加密算法c语言实现,C++通过openssl实现RC4算法加密解密 - c++ - 万捷博客-#include stdlib.h #include stdio.h #include s...

#include

#include

#include

#include

//RC4加密

const char* rc4_encode(const char* data,const char* pass){

RC4_KEY key;

int length=strlen(pass);

RC4_set_key(&key,length,(unsigned const char*)pass);//设置密钥

int len=strlen(data);

unsigned char *outdata;//分配密文空间

outdata=(unsigned char *)malloc(sizeof(unsigned char)*(len+1));

memset(outdata,0,len+1);//初始为0

RC4(&key,strlen(data),(unsigned const char*)data,outdata);//加密明文

return (const char*)outdata;

}

//RC4解密

const char* rc4_decode(const char* outdata,const char* pass){

RC4_KEY key;

int length=strlen(pass);

int len=strlen(outdata);

unsigned char *plain;//分配明文空间

plain=(unsigned char *)malloc(sizeof(unsigned char)*(len+1));

memset(plain,0,len+1);//初始化为0

RC4_set_key(&key,length,(unsigned const char*)pass);//设置密钥

RC4(&key,strlen((char*)outdata),(unsigned const char*)outdata,plain);//解密密文

return (const char*)plain;

}

int main(int argc,char* argv[])

{

const char * a = rc4_encode("这是一个文本","password");

printf("\加密后：%s\n",a);

const char * b = rc4_decode(a,"password");

printf("\解密后：%s\n",b);

}