PHP uchun XTEA C ++ kodini ko'chirishga yordam bering

Ba'zi muammolar PHP uchun C ++ kodini o'zgartiradi. Maqsadim XMLRPC orqali talab qilingan paketni shifrlash/parolini shishish uchun XTEA shifrini yordamida veb-server (PHP) bilan arizamni (C ++) qurish kerak.

Ba'zi loyihalardan olgan original kodim Lode's Programming Interface va kodi bu .

ba'zi qismlari:

inline void xtea_encipher(unsigned int num_rounds, unsigned long* v, unsigned long* k)
{
  unsigned long v0 = v[0], v1 = v[1];
  unsigned long sum = 0, delta = 0x9E3779B9;
  for(unsigned int i = 0; i < num_rounds; i++)
  {
    v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
    sum += delta;
    v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum >> 11) & 3]);
  }
  v[0] = v0;
  v[1] = v1;
}

inline void xtea_decipher(unsigned int num_rounds, unsigned long* v, unsigned long* k)
{
  unsigned long v0 = v[0], v1 = v[1];
  unsigned long delta = 0x9E3779B9, sum = delta * num_rounds;
  for(unsigned int i = 0; i < num_rounds; i++)
  {
    v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum >> 11) & 3]);
    sum -= delta;
    v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
  }
  v[0] = v0;
  v[1] = v1;
}

template
void xtea_encipher(T& out, const T& in, const std::string& password)
{
  out = in;
  size_t extra_zeroes = (8 - (out.size() % 8)) % 8;
  out.resize(out.size() + extra_zeroes, 0); //add values until the size is a multiple of 8

  unsigned long k[4]; //128 bit key
  std::string pw16 = password; //password with 16 chars (=128 bit)
  pw16.resize(16, 0);
  typedef unsigned char uc;

  k[0] = ((uc)pw16[ 0]) | ((uc)pw16[ 1] << 8) | ((uc)pw16[ 2] << 16) | ((uc)pw16[ 3] << 24);
  k[1] = ((uc)pw16[ 4]) | ((uc)pw16[ 5] << 8) | ((uc)pw16[ 6] << 16) | ((uc)pw16[ 7] << 24);
  k[2] = ((uc)pw16[ 8]) | ((uc)pw16[ 9] << 8) | ((uc)pw16[10] << 16) | ((uc)pw16[11] << 24);
  k[3] = ((uc)pw16[12]) | ((uc)pw16[13] << 8) | ((uc)pw16[14] << 16) | ((uc)pw16[15] << 24);

  unsigned long v[2];

  for(size_t i = 0; i + 7 < out.size(); i += 8)
  {
    v[0] = ((uc)out[i + 0]) | ((uc)out[i + 1] << 8) | ((uc)out[i + 2] << 16) | ((uc)out[i + 3] << 24);
    v[1] = ((uc)out[i + 4]) | ((uc)out[i + 5] << 8) | ((uc)out[i + 6] << 16) | ((uc)out[i + 7] << 24);

    xtea_encipher(64, v, k);

    out[i + 0] = (v[0]) & 255; out[i + 1] = (v[0] >> 8) & 255; out[i + 2] = (v[0] >> 16) & 255; out[i + 3] = (v[0] >> 24) & 255;
    out[i + 4] = (v[1]) & 255; out[i + 5] = (v[1] >> 8) & 255; out[i + 6] = (v[1] >> 16) & 255; out[i + 7] = (v[1] >> 24) & 255;
  }

  out.push_back(extra_zeroes); //at the end, specify to the data how many zeroes can be removed after decoding
}

//returns false if everything went ok, returns true and does nothing if the amount of zeros is > 7 which means it wasn't an enciphered file OR the filesize modulo 8 of the input file isn't 1
template
bool xtea_decipher(T& out, const T& in, const std::string& password)
{
  if((in.size() % 8) != 1) return true; //error, incorrect size

  size_t extra_zeroes = in[in.size() - 1];

  if(extra_zeroes >= 8) return true; //error, incorrect amount of extra zeroes indicated

  out = in;

  out.resize(out.size() - 1);

  unsigned long k[4]; //128 bit key
  std::string pw16 = password; //password with 16 chars (=128 bit)
  pw16.resize(16, 0);
  typedef unsigned char uc;
  k[0] = ((uc)pw16[ 0]) | ((uc)pw16[ 1] << 8) | ((uc)pw16[ 2] << 16) | ((uc)pw16[ 3] << 24);
  k[1] = ((uc)pw16[ 4]) | ((uc)pw16[ 5] << 8) | ((uc)pw16[ 6] << 16) | ((uc)pw16[ 7] << 24);
  k[2] = ((uc)pw16[ 8]) | ((uc)pw16[ 9] << 8) | ((uc)pw16[10] << 16) | ((uc)pw16[11] << 24);
  k[3] = ((uc)pw16[12]) | ((uc)pw16[13] << 8) | ((uc)pw16[14] << 16) | ((uc)pw16[15] << 24);

  unsigned long v[2];

  for(size_t i = 0; i + 7 < in.size(); i += 8)
  {
    v[0] = ((uc)out[i + 0]) | ((uc)out[i + 1] << 8) | ((uc)out[i + 2] << 16) | ((uc)out[i + 3] << 24);
    v[1] = ((uc)out[i + 4]) | ((uc)out[i + 5] << 8) | ((uc)out[i + 6] << 16) | ((uc)out[i + 7] << 24);

    xtea_decipher(64, v, k);

    out[i + 0] = (v[0]) & 255; out[i + 1] = (v[0] >> 8) & 255; out[i + 2] = (v[0] >> 16) & 255; out[i + 3] = (v[0] >> 24) & 255;
    out[i + 4] = (v[1]) & 255; out[i + 5] = (v[1] >> 8) & 255; out[i + 6] = (v[1] >> 16) & 255; out[i + 7] = (v[1] >> 24) & 255;
  }

  out.resize(out.size() - extra_zeroes);

  return false;
}

Yuqorida kodni PHP kodiga aylantirishga yordam beradigan kimdir bo'lishi mumkin? Berilgan barcha yordamlar juda qadrlanadi.

Oldindan rahmat.

1
Hozirgacha nima bor? Ayniqsa sizda qanday prblem mavjud?
qo'shib qo'ydi muallif PeeHaa, manba

2 javoblar

Yana bir sabab, C ++ kodingizni saqlab qolish va PHP ga (uni embed qilish) qanday qilib yopishtirishni o'rgatish mumkin. Menimcha, PHP dinamik ravishda yuklangan umumiy kutubxonalarda tashqi kodni chaqira oladi.

2
qo'shib qo'ydi
Ha, lekin tizimni osongina qayta konfiguratsiya qilishim kerak. Xavfsizlik uchun, ko'pgina veb-bloklarni blokirovka qilish funktsiyasi ularning tizimiga xavf soladi. Yaxshiyamki, sizdan yaxshi ma'lumot. Rahmat.
qo'shib qo'ydi muallif REFNTiE, manba

Vikipediya dagi XTEA sahifasi PHP ilovasi . (Pastdagi yuklab olish havolasini qarang). Bu yaxshi boshlanish bo'lishi kerak.

2
qo'shib qo'ydi
Mening xatoim! Men bu linkni ko'rmayapman, OMG! Rahmat.
qo'shib qo'ydi muallif REFNTiE, manba
PhP |BotsUz
PhP |BotsUz
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Phpni o'rganishni Hohlasangiz https://t.me/joinchat/AAAAAE-KRc5dd5tPMmGmWA A'zo bo'lin