NTLM口令加密算法C++实现

NT（Windows NT LAN Manager）是一种口令加密算法，它用于计算Windows操作系统中的用户口令哈希值。以下是NTLM口令加密算法的C++实现：

#include <iostream>
#include <cstring>
#include <Windows.h>

using namespace std;

void LMHash(const char* pwd, unsigned char* lmhash)
{
    unsigned char* p = lmhash;
    char password[14] = {0};
    strncpy(password, pwd, 14);
    CharUpperA(password);
    memset(p, 0, 16);
    for (int i = 0; i < 14; i += 7)
    {
        for (int j = 0; j < 7; j++)
        {
            if (password[i + j])
            {
                unsigned char c = password[i + j];
                for (int k = 0; k < 8; k++)
                {
                    unsigned char bit = (c >> k) & 1;
                    *p++ = bit ? 0xff : 0;
                }
            }
            else
            {
                *p++ = 0;
            }
        }
    }
}

void NTLMHash(const char* pwd, unsigned char* ntlmhash)
{
    char password[256];
    strncpy(password, pwd, 256);
    int len = strlen(password);
    memset(&password[len], 0, 256 - len);
    HCRYPTPROV hProv;
    HCRYPTHASH hHash;
    DWORD dwLen = 16;
    BYTE rgbHash[16];
    if (CryptAcquireContext(&hProv, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
    {
        if (CryptCreateHash(hProv, CALG_MD4, 0, 0, &hHash))
        {
            if (CryptHashData(hHash, (BYTE*)password, strlen(password), 0))
            {
                if (CryptGetHashParam(hHash, HP_HASHVAL, rgbHash, &dwLen, 0))
                {
                    memcpy(ntlmhash, rgbHash, 16);
                }
            }
            CryptDestroyHash(hHash);
        }
        CryptReleaseContext(hProv, 0);
    }
}

int main()
{
    const char* pwd = "password";
    unsigned char lmhash[16];
    unsigned char ntlmhash[16];
    LMHash(pwd, lmhash);
    NTLMHash(pwd, ntlmhash);
    cout << "LM hash: ";
    for (int i = 0; i < 16; i++)
    {
        printf("%02X", lmhash[i]);
    }
    cout << endl;
    cout << "NTLM hash: ";
    for (int i = 0; i < 16; i++)
    {
        printf("%02X", ntlmhash[i]);
    }
    cout << endl;
    return 0;
}

该代码使用Windows API中的加密函数计算口令的LM哈希值和NTLM哈希值。在计算LM哈希值时，密码将被转换为大写，并且长度必须小于14个字符。在计算NTLM哈希值时，使用MD4哈希算法计算密码的哈希值，并将结果拷贝到NTLM哈希值输出参数中。