[C++] 使用 cryptopp 加密解密

本文主要是介绍[C++] 使用 cryptopp 加密解密，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

官网：https://www.cryptopp.com/docs/ref/index.html

github：https://github.com/LYingSiMon/cryptopp

文档：https://www.cryptopp.com/docs/ref/

环境搭建

引入 cryptlib.lib ， 以及所有项目中的头文件

AES 加密测试（ECB 模式为例）

#include <iostream>#include "cryptlib.h"
#include "rijndael.h"
#include "modes.h"
#include "files.h"
#include "osrng.h"
#include "hex.h"
#include "base64.h"using namespace CryptoPP;// aes ebc 加密（输出 base64）
std::string aes_encrypt_ecb_base64(std::string data , unsigned char* key, int keylen)
{std::string encrypt_str;try {CryptoPP::ECB_Mode<CryptoPP::AES>::Encryption ecb_encription(key, keylen);CryptoPP::StreamTransformationFilter stf_encription(ecb_encription,new CryptoPP::Base64Encoder(new CryptoPP::StringSink(encrypt_str)),CryptoPP::BlockPaddingSchemeDef::ZEROS_PADDING);stf_encription.Put(reinterpret_cast<const unsigned char*>(data.c_str()), data.length() + 1);stf_encription.MessageEnd();}catch (std::exception e) {std::cout << e.what() << std::endl;}return encrypt_str;
}// aes ebc 加密（输出 hex） 
std::string aes_encrypt_ecb_hex(std::string data , unsigned char* key, int keylen)
{std::string encrypt_str;try {CryptoPP::ECB_Mode<CryptoPP::AES>::Encryption ecb_encription(key, keylen);CryptoPP::StreamTransformationFilter stf_encription(ecb_encription,new CryptoPP::HexEncoder(new CryptoPP::StringSink(encrypt_str)),CryptoPP::BlockPaddingSchemeDef::ZEROS_PADDING);stf_encription.Put(reinterpret_cast<const unsigned char*>(data.c_str()), data.length() + 1);stf_encription.MessageEnd();}catch (std::exception e) {std::cout << e.what() << std::endl;}return encrypt_str;
}// aes ebc 解密（输出 base64）
std::string aes_decrypt_ecb_base64(std::string base64_data, unsigned char* key, int keylen)
{try {std::string aes_encrypt_data;CryptoPP::Base64Decoder decoder;decoder.Attach(new CryptoPP::StringSink(aes_encrypt_data));decoder.Put(reinterpret_cast<const unsigned char*>(base64_data.c_str()), base64_data.length());decoder.MessageEnd();std::string decrypt_data;CryptoPP::ECB_Mode<CryptoPP::AES>::Decryption ebc_description(key, keylen);CryptoPP::StreamTransformationFilter stf_description(ebc_description,new CryptoPP::StringSink(decrypt_data), CryptoPP::BlockPaddingSchemeDef::ZEROS_PADDING);stf_description.Put(reinterpret_cast<const unsigned char*>(aes_encrypt_data.c_str()), aes_encrypt_data.length());stf_description.MessageEnd();return decrypt_data;}catch (std::exception e) {std::cout << e.what() << std::endl;return "";}
}// aes ebc 解密（输出 hex）
std::string aes_decrypt_ecb_hex(std::string hex_data, unsigned char* key, int keylen)
{try{std::string aes_encrypt_data;CryptoPP::HexDecoder decoder;decoder.Attach(new CryptoPP::StringSink(aes_encrypt_data));decoder.Put(reinterpret_cast<const unsigned char*>(hex_data.c_str()), hex_data.length());decoder.MessageEnd();std::string decrypt_data;CryptoPP::ECB_Mode<CryptoPP::AES>::Decryption ebc_description(key, keylen);CryptoPP::StreamTransformationFilter stf_description(ebc_description,new CryptoPP::StringSink(decrypt_data),CryptoPP::BlockPaddingSchemeDef::ZEROS_PADDING);stf_description.Put(reinterpret_cast<const unsigned char*>(aes_encrypt_data.c_str()),aes_encrypt_data.length());stf_description.MessageEnd();return decrypt_data;}catch (std::exception e) {std::cout << e.what() << std::endl;return "";}
}int main()
{// ebc base64 std::string en_base64 = aes_encrypt_ecb_base64("hello cryptopp",(unsigned char*)"1234567812345678", 16);printf("en:%s \n", en_base64.c_str());std::string de_base64 = aes_decrypt_ecb_base64(en_base64, (unsigned char*)"1234567812345678", 16);printf("de:%s \n", de_base64.c_str());// ebc hexstd::string en_hex = aes_encrypt_ecb_hex("hello cryptopp", (unsigned char*)"1234567812345678", 16);printf("en:%s \n", en_hex.c_str());std::string de_hex = aes_decrypt_ecb_hex(en_hex, (unsigned char*)"1234567812345678", 16);printf("de:%s \n", de_hex.c_str());(void)getchar();return 0;
}

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