如何进行C++代码的数据加密?

#include <openssl/aes.h>
#include <string>

std::string encryptAES(std::string data, std::string key) {
    AES_KEY aesKey;
    AES_set_encrypt_key((const unsigned char*)key.c_str(), 128, &aesKey);

    std::string encryptedData;
    encryptedData.resize(data.size() + AES_BLOCK_SIZE);

    unsigned char iv[AES_BLOCK_SIZE];
    memset(iv, 0, sizeof(iv));

    AES_cbc_encrypt((const unsigned char*)data.c_str(),
                    (unsigned char*)encryptedData.data(),
                    data.size(),
                    &aesKey,
                    iv,
                    AES_ENCRYPT);

    return encryptedData;
}

std::string decryptAES(std::string encryptedData, std::string key) {
    AES_KEY aesKey;
    AES_set_decrypt_key((const unsigned char*)key.c_str(), 128, &aesKey);

    std::string decryptedData;
    decryptedData.resize(encryptedData.size());

    unsigned char iv[AES_BLOCK_SIZE];
    memset(iv, 0, sizeof(iv));

    AES_cbc_encrypt((const unsigned char*)encryptedData.c_str(),
                    (unsigned char*)decryptedData.data(),
                    encryptedData.size(),
                    &aesKey,
                    iv,
                    AES_DECRYPT);

    return decryptedData;
}

#include <cryptopp/rsa.h>
#include <cryptopp/osrng.h>
#include <cryptopp/base64.h>
#include <string>

std::string encryptRSA(std::string data, std::string publicKey) {
    CryptoPP::RSA::PublicKey rsaPublicKey;
    CryptoPP::Base64Decoder base64Decoder;

    base64Decoder.Attach(new CryptoPP::StringSink(publicKey), false);
    rsaPublicKey.Load(base64Decoder);

    CryptoPP::AutoSeededRandomPool rng;
    std::string encryptedData;

    CryptoPP::RSAES_OAEP_SHA_Encryptor encryptor(rsaPublicKey);
    CryptoPP::StringSource(data,
                           true,
                           new CryptoPP::PK_EncryptorFilter(rng,
                                                            encryptor,
                                                            new CryptoPP::StringSink(encryptedData)));

    return encryptedData;
}

std::string decryptRSA(std::string encryptedData, std::string privateKey) {
    CryptoPP::RSA::PrivateKey rsaPrivateKey;
    CryptoPP::Base64Decoder base64Decoder;

    base64Decoder.Attach(new CryptoPP::StringSink(privateKey), false);
    rsaPrivateKey.Load(base64Decoder);

    CryptoPP::AutoSeededRandomPool rng;
    std::string decryptedData;

    CryptoPP::RSAES_OAEP_SHA_Decryptor decryptor(rsaPrivateKey);
    CryptoPP::StringSource(encryptedData,
                           true,
                           new CryptoPP::PK_DecryptorFilter(rng,
                                                            decryptor,
                                                            new CryptoPP::StringSink(decryptedData)));

    return decryptedData;
}

#include <cryptopp/sha.h>
#include <cryptopp/hex.h>
#include <string>

std::string calculateHash(std::string data) {
    CryptoPP::SHA256 hash;
    std::string hashValue;

    CryptoPP::StringSource(data,
                           true,
                           new CryptoPP::HashFilter(hash,
                                                    new CryptoPP::HexEncoder(new CryptoPP::StringSink(hashValue))));

    return hashValue;
}