RSA.zip_Crypto++_crypto RSA_crypto rsa_rsa_rsa加密

#include <cryptopp/randpool.h> #include <cryptopp/rsa.h> #include <cryptopp/hex.h> #include <cryptopp/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(); //------------------------ // 主程序 //------------------------ 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"); //创建公钥，私钥配对 GenerateRSAKey(1024, priKey, pubKey, seed); // RSA 加解密 char message[1024] = {0}; strcpy(message, "www.ilcd.tv"); 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)); randPool.Put((byte*)"Hello",5); 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); //RandomPool randPool; //randPool.Put((byte*)"Hello",5); string result; StringSource(ciphertext, true, new HexDecoder(new PK_DecryptorFilter(GlobalRNG(), priv, new StringSink(result)))); return result; } //------------------------ // 定义全局的随机数 //------------------------ RandomPool & GlobalRNG() { static RandomPool randomPool; return randomPool; }