折腾了快1个小时,将常见的一些加密库都测试一下,再按照环境选择一个应用到项目 中去.crypto++海内用得蛮多的,资料还算较量齐全,可是让我讨厌的是源文件太乱,把 所有的算法都包罗进去了,我今朝不能分辨哪些文件是我需要的,所以编译crypto++的源 代码生成的静态链接库居然到达了34M,很可怕啊,软件宣布年华这个算法库就得34M,比 软件自己还大了,正在想步伐提取本身需要的部门.
#include "randpool.h"
#include "rsa.h"
#include "hex.h"
#include "files.h"
#include <iostream>
using namespace std;
using namespace CryptoPP;
//------------------------
// 函数声明
//------------------------
void GenerateRSAKey(unsigned int keyLength, const char *privFilename, const char *pubFilename, const char *seed);
string RSAEncryptString(const char *pubFilename, const char *seed, const char *message);
string RSADecryptString(const char *privFilename, const char *ciphertext);
RandomPool & GlobalRNG();
//------------------------
// 主措施
//------------------------
int main()
{
char priKey[128] = {0};
char pubKey[128] = {0};
char seed[1024] = {0};
// 生成 RSA 密钥对
strcpy(priKey, "private.ilcd"); // 生成的私钥文件名
strcpy(pubKey, "public.ilcd"); // 生成的公钥文件名
strcpy(seed, "seed");
//建设公钥,私钥配对
GenerateRSAKey(1024, priKey, pubKey, seed);
// RSA 加解密
char message[1024] = {0};
strcpy(message, "");
cout<<"原始字符 串:\t"<<message<<endl<<endl;
string encryptedText = RSAEncryptString(pubKey, seed, message); // RSA 加密
cout<<"加密后字符 串:\t"<<encryptedText<<endl<<endl;
string decryptedText = RSADecryptString(priKey, encryptedText.c_str ()); // RSA 解密
cout<<"解密后字符 串:\t"<<decryptedText<<endl<<endl;
return 0;
}
//------------------------
// 生成RSA密钥对
//------------------------
void GenerateRSAKey(unsigned int keyLength, const char *privFilename, const char *pubFilename, const char *seed)
{
RandomPool randPool;
randPool.Put((byte *)seed, strlen(seed));
RSAES_OAEP_SHA_Decryptor priv(randPool, keyLength);
HexEncoder privFile(new FileSink(privFilename));
priv.DEREncode(privFile);
privFile.MessageEnd();
RSAES_OAEP_SHA_Encryptor pub(priv);
HexEncoder pubFile(new FileSink(pubFilename));
pub.DEREncode(pubFile);
pubFile.MessageEnd();
}
//------------------------
// RSA加密
//------------------------
string RSAEncryptString(const char *pubFilename, const char *seed, const char *message)
{
FileSource pubFile(pubFilename, true, new HexDecoder);
RSAES_OAEP_SHA_Encryptor pub(pubFile);
RandomPool randPool;
randPool.Put((byte *)seed, strlen(seed));
string result;
StringSource(message, true, new PK_EncryptorFilter(randPool, pub, new HexEncoder(new StringSink(result))));
return result;
}
//------------------------
// RSA解密
//------------------------
string RSADecryptString(const char *privFilename, const char *ciphertext)
{
FileSource privFile(privFilename, true, new HexDecoder);
RSAES_OAEP_SHA_Decryptor priv(privFile);
string result;
StringSource(ciphertext, true, new HexDecoder(new PK_DecryptorFilter (GlobalRNG(), priv, new StringSink(result))));
return result;
}
//------------------------
// 界说全局的随机数
//------------------------
RandomPool & GlobalRNG()
{
static RandomPool randomPool;
return randomPool;
}
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