[AES / CTR解密使用Crypto ++意外停止？

Question

我正在尝试使用Crypto ++库]进行AES加密和解密字节数组（vector<unsigned char>）>。加密正常工作。

我的函数生成一个随机IV，并将其放在加密数据的前面。当然解密会读取IV。我修改了this答案中的代码，因此它适用于我的矢量和CTR /无填充。

程序在stfDecryptor.Put(...)行中崩溃。首先，我认为数据或IV读取不正确，但是经过检查后，情况并非如此。

我希望我在这里犯了一个非常明显的错误。

谢谢大家：）

课堂电话：

//The code is not clean, i want to get it working first and then clean it up. 
auto key = Helper::RandomBytes(16); //returns "byte Array" with random Bytes
auto data = Helper::UTF8String2ByteArray("HELLO WORLD!");
auto encrypted = AESCrypt::encrypt(key, data);
cout << Helper::ByteArray2HexString(key);
cout << "\r\n";
cout << Helper::ByteArray2HexString(data);
cout << "\r\n";
cout << Helper::ByteArray2HexString(encrypted);
cout << "\r\n";    
auto decrypted = AESCrypt::decrypt(key, encrypted);
auto clear = Helper::ByteArray2UTF8String(decrypted);
Class：

vector<unsigned char> AESCrypt::encrypt(vector<unsigned char> key_, vector<unsigned char> data)
{
    vector<unsigned char> iv_ = Helper::RandomBytes(16); //returns "byte Array" with random Bytes

    byte key[AES::DEFAULT_KEYLENGTH], iv[AES::BLOCKSIZE];

    for (size_t i = 0; i < AES::DEFAULT_KEYLENGTH; i++)
        key[i] = key_[i];
    for (size_t i = 0; i < iv_.size(); i++)
        iv[i] = iv_[i];

    AES::Encryption aesEncryption(key, AES::DEFAULT_KEYLENGTH);
    CTR_Mode_ExternalCipher::Encryption ctrEncryption(aesEncryption, iv);

    vector<unsigned char> encrypted;
    StreamTransformationFilter stfEncryptor(
        ctrEncryption,
        new VectorSink(encrypted),
        BlockPaddingSchemeDef::NO_PADDING);

    stfEncryptor.Put((const byte*)data.data(), data.size());
    stfEncryptor.MessageEnd();

    vector<unsigned char> output(encrypted.size() + 16);

    for (size_t i = 0; i < 16; i++)
        output[i] = iv[i];
    for (size_t i = 0; i < encrypted.size(); i++)
        output[16 + i] = encrypted[i];

    return output;
}

vector<unsigned char> AESCrypt::decrypt(vector<unsigned char> key_, vector<unsigned char> data_)
{    
    byte key[AES::DEFAULT_KEYLENGTH], iv[AES::BLOCKSIZE];
    for (size_t i = 0; i < AES::DEFAULT_KEYLENGTH; i++)
        key[i] = key_[i];
    for (size_t i = 0; i < 16; i++)
        iv[i] = data_[i];

    vector<unsigned char> data(data_.size() - 16);
    for (size_t i = 0; i < data.size(); i++)
    {
        data[i] = data_[16 + i];
    }

    AES::Decryption aesDecryption(key, AES::DEFAULT_KEYLENGTH);
    CTR_Mode_ExternalCipher::Decryption ctrDecryption(aesDecryption, iv);

    vector<unsigned char> decrypted;
    StreamTransformationFilter stfDecryptor(
        ctrDecryption,
        new VectorSink(decrypted),
        BlockPaddingSchemeDef::NO_PADDING);

    stfDecryptor.Put((const byte*)data.data(), data.size()); //this is where it crashes
    stfDecryptor.MessageEnd();

    return decrypted;

}
这里是CallStack的图片：

这是在C ++++库中停止的行：

CRYPTOPP_ASSERT(m_cipher->IsForwardTransformation());

我正在尝试使用Crypto ++库进行AES加密和解密字节数组（vector ）。加密正常工作。我的函数生成一个随机IV，并将其放在...

Answer 1

这是在CryptoPP库内部停止的行：