字符串析构函数中的cryptopp dll崩溃

如何解决字符串析构函数中的cryptopp dll崩溃

我正在使用 Crypto++ library 实现加密/解密程序。我让cryptopp dll和新项目引用它。

现在，我在 std::string 析构函数中面临崩溃问题。以下是我的代码。

//Encrypt
void Encryption(std::string encryptData,std::string& outString)
{
    std::string plain,cipher,encoded,recovered;

    plain = encryptData;

    unsigned char key[CryptoPP::AES::DEFAULT_KEYLENGTH];
    memset(key,0x00,CryptoPP::AES::DEFAULT_KEYLENGTH);

    std::string rawKey = "testRawKey";
    hex2byte(rawKey,rawKey.length(),key);

    unsigned char iv[CryptoPP::AES::BLOCKSIZE];
    memset(iv,CryptoPP::AES::BLOCKSIZE);

    std::string rawIv = "testRawIV";
    hex2byte(rawIv,rawIv.length(),iv);

    encoded.clear();

    CryptoPP::StringSource(key,sizeof(key),true,new CryptoPP::HexEncoder(
            new CryptoPP::StringSink(encoded)
        ) // HexEncoder
    ); // StringSource

    encoded.clear();

    CryptoPP::StringSource(iv,sizeof(iv),new CryptoPP::HexEncoder(
            new CryptoPP::StringSink(encoded)
        ) // HexEncoder
    ); // StringSource

    try {
        CryptoPP::CFB_Mode< CryptoPP::AES >::Encryption e;
        e.SetKeyWithIV(key,iv);

        CryptoPP::StreamTransformationFilter filter(e);
        filter.Put((const unsigned char*)plain.data(),plain.size());
        filter.MessageEnd();

        const size_t ret = filter.MaxRetrievable();
        cipher.resize(ret);
        filter.Get((unsigned char*)cipher.data(),cipher.size());
    }
    catch (const CryptoPP::Exception& e) {
        std::cerr << e.what() << std::endl;
        cipher = "";
    }
    outString = cipher;
}

//Decrypt
std::string Decryption(std::string cipher)
{
    std::string plain,recovered;

    unsigned char* key = new unsigned char[CryptoPP::AES::DEFAULT_KEYLENGTH];
    memset(key,key);

    unsigned char* iv = new unsigned char[CryptoPP::AES::BLOCKSIZE];
    memset(iv,iv);

    encoded.clear();

    CryptoPP::StringSource ss1(key,new CryptoPP::HexEncoder(
            new CryptoPP::StringSink(encoded)
        ) // HexEncoder
    ); // StringSource

    encoded.clear();

    CryptoPP::StringSource ss2(iv,new CryptoPP::HexEncoder(
            new CryptoPP::StringSink(encoded)
        ) // HexEncoder
    ); // StringSource

    std::string plainText;

    try {
        CryptoPP::CFB_Mode< CryptoPP::AES >::Decryption d;

        d.SetKeyWithIV(key,iv);

        CryptoPP::StreamTransformationFilter filter(d);

        filter.Put((const unsigned char*)cipher.data(),cipher.size());
        filter.MessageEnd();

        const size_t ret = filter.MaxRetrievable();
        recovered.resize(ret);
        filter.Get((unsigned char*)recovered.data(),recovered.size());
    }
    catch (const CryptoPP::Exception& e) {
        std::cerr << e.what() << std::endl;
        recovered = "";
    }
    return recovered;
}

void main()
{
    std::string result = "";
    Encryption("test",result);
    cout << result << endl;
    std::string result1 = Decryption(result);
    cout << result1 << endl;
}

当我运行这段代码时，总是出现错误。 heap\debug_heap.cpp 行：904 表达式：_CrtlsValidHeapPointer(block)

错误的调用堆栈是，

testnesteddll.exe!std::string::~basic_string

根据调用堆栈，错误发生在 string 析构函数上。这就是为什么我认为崩溃发生在 string 析构函数上。

最后，我查看了与字符串相关的代码，并找出了问题所在。当我注释掉我使用 StringSource 类的位置时，错误消失了。所以我注释掉了所有与 StringSource 相关的代码，然后我运行了它。效果很好，但这是我不想要的结果。

我想知道为什么会出现这个错误，我该如何解决？

我真的很难解决这个问题。请您分享一下这方面的知识好吗？提前致谢。