请用c++解密上个程序

由于上一个程序是针对特定加密结构编写的，它包含了位反转、位置交换、字节左移和异或操作。为了解密这个密码，我们需要逆向执行这些步骤。下面是一个简单的解密函数，假设我们知道加密的顺序：

#include <iostream>
#include <vector>

// 假设我们知道了原始数据的加密顺序，这里是逆序的操作
std::vector<unsigned char> reverseBits(const std::vector<unsigned char>& encrypted) {
    std::vector<unsigned char> decrypted(encrypted.size());
    for (size_t i = 0; i < encrypted.size(); ++i) {
        decrypted[i] = 0;
        for (size_t j = 0; j < 8; ++j) {
            decrypted[i] |= ((encrypted[i] >> j) & 1) << (7 - j);
        }
    }
    return decrypted;
}

std::vector<unsigned char> swapPositionsBack(const std::vector<unsigned char>& encrypted) {
    const size_t positions[] = {13, 4, 0, 5, 2, 12, 11, 8, 10, 6, 1, 9, 3, 15, 7, 14};
    std::vector<unsigned char> decrypted(encrypted.size());
    for (size_t i = 0; i < encrypted.size(); ++i) {
        decrypted[positions[i]] = encrypted[i];
    }
    return decrypted;
}

std::vector<unsigned char> undoLeftShiftBytes(const std::vector<unsigned char>& encrypted) {
    std::vector<unsigned char> decrypted(encrypted.size());
    for (size_t i = 0; i < encrypted.size(); ++i) {
        decrypted[i] = (encrypted[i] >> 3) | (encrypted[i] << 5);
    }
    return decrypted;
}

std::vector<unsigned char> undoXorWithKey(const std::vector<unsigned char>& encrypted, unsigned int round) {
    const int keyMask = 0x78; // 原始异或的关键值
    std::vector<unsigned char> decrypted(encrypted.size());
    for (size_t i = 0; i < encrypted.size(); ++i) {
        decrypted[i] = encrypted[i] ^ (keyMask * round);
    }
    return decrypted;
}

std::vector<unsigned char> decryptPassword(const std::vector<unsigned char>& encrypted) {
    for (int round = 15; round >= 0; --round) {
        encrypted = undoXorWithKey(encrypted, round);
        encrypted = undoLeftShiftBytes(encrypted);
        encrypted = swapPositionsBack(encrypted);
        encrypted = reverseBits(encrypted);
    }
    return encrypted;
}

int main() {
    std::vector<unsigned char> encryptedPassword = { /* 从上一个程序的输出读取加密后的16字节 */ };
    std::vector<unsigned char> decryptedPassword = decryptPassword(encryptedPassword);

    // 打印解密后的密码
    for (const auto& byte : decryptedPassword) {
        std::cout << std::hex << static_cast<int>(byte) << " ";
    }
    std::cout << '\n';
    return 0;
}

这个程序首先按照加密过程的逆序，逐层恢复了原始的密码。请注意，你需要实际运行加密程序并获取加密后的结果，才能输入到这个解密程序中。由于信息缺失，这里的`encryptedPassword`应该替换为实际的加密数据。