AES128加密C++代码

以下是使用 Crypto++ 库实现 AES128 加密的 C++ 代码：

#include <iostream>
#include <string>
#include <cryptopp/aes.h>
#include <cryptopp/modes.h>
#include <cryptopp/filters.h>

using namespace CryptoPP;

std::string aes128_encrypt(const std::string& key, const std::string& iv, const std::string& plaintext)
{
    std::string ciphertext;
    CBC_Mode<AES>::Encryption encryption((byte*)key.c_str(), key.size(), (byte*)iv.c_str());

    StringSource(plaintext, true, new StreamTransformationFilter(encryption, new StringSink(ciphertext)));

    return ciphertext;
}

int main()
{
    std::string key = "0123456789abcdef";
    std::string iv = "fedcba9876543210";
    std::string plaintext = "Hello, world!";

    std::string ciphertext = aes128_encrypt(key, iv, plaintext);

    std::cout << "Plaintext: " << plaintext << std::endl;
    std::cout << "Ciphertext: " << ciphertext << std::endl;

    return 0;
}

注意，在使用 Crypto++ 前，需要先安装 Crypto++ 库。可以通过以下命令在 Ubuntu 下进行安装：

sudo apt-get update
sudo apt-get install -y libcrypto++-dev