rn-app/utils/network/des.ts

// @ts-nocheck
//des
//this takes the key, the message, and whether to encrypt or decrypt

export function des(key, message, encrypt, mode, iv, padding) {
  if (encrypt)
    //如果是加密的话，首先转换编码
    message = unescape(encodeURIComponent(message));
  //declaring this locally speeds things up a bit
  const spfunction1 = [
    0x1010400, 0, 0x10000, 0x1010404, 0x1010004, 0x10404, 0x4, 0x10000, 0x400, 0x1010400, 0x1010404,
    0x400, 0x1000404, 0x1010004, 0x1000000, 0x4, 0x404, 0x1000400, 0x1000400, 0x10400, 0x10400,
    0x1010000, 0x1010000, 0x1000404, 0x10004, 0x1000004, 0x1000004, 0x10004, 0, 0x404, 0x10404,
    0x1000000, 0x10000, 0x1010404, 0x4, 0x1010000, 0x1010400, 0x1000000, 0x1000000, 0x400,
    0x1010004, 0x10000, 0x10400, 0x1000004, 0x400, 0x4, 0x1000404, 0x10404, 0x1010404, 0x10004,
    0x1010000, 0x1000404, 0x1000004, 0x404, 0x10404, 0x1010400, 0x404, 0x1000400, 0x1000400, 0,
    0x10004, 0x10400, 0, 0x1010004,
  ];
  const spfunction2 = [
    -0x7fef7fe0, -0x7fff8000, 0x8000, 0x108020, 0x100000, 0x20, -0x7fefffe0, -0x7fff7fe0,
    -0x7fffffe0, -0x7fef7fe0, -0x7fef8000, -0x80000000, -0x7fff8000, 0x100000, 0x20, -0x7fefffe0,
    0x108000, 0x100020, -0x7fff7fe0, 0, -0x80000000, 0x8000, 0x108020, -0x7ff00000, 0x100020,
    -0x7fffffe0, 0, 0x108000, 0x8020, -0x7fef8000, -0x7ff00000, 0x8020, 0, 0x108020, -0x7fefffe0,
    0x100000, -0x7fff7fe0, -0x7ff00000, -0x7fef8000, 0x8000, -0x7ff00000, -0x7fff8000, 0x20,
    -0x7fef7fe0, 0x108020, 0x20, 0x8000, -0x80000000, 0x8020, -0x7fef8000, 0x100000, -0x7fffffe0,
    0x100020, -0x7fff7fe0, -0x7fffffe0, 0x100020, 0x108000, 0, -0x7fff8000, 0x8020, -0x80000000,
    -0x7fefffe0, -0x7fef7fe0, 0x108000,
  ];
  const spfunction3 = [
    0x208, 0x8020200, 0, 0x8020008, 0x8000200, 0, 0x20208, 0x8000200, 0x20008, 0x8000008, 0x8000008,
    0x20000, 0x8020208, 0x20008, 0x8020000, 0x208, 0x8000000, 0x8, 0x8020200, 0x200, 0x20200,
    0x8020000, 0x8020008, 0x20208, 0x8000208, 0x20200, 0x20000, 0x8000208, 0x8, 0x8020208, 0x200,
    0x8000000, 0x8020200, 0x8000000, 0x20008, 0x208, 0x20000, 0x8020200, 0x8000200, 0, 0x200,
    0x20008, 0x8020208, 0x8000200, 0x8000008, 0x200, 0, 0x8020008, 0x8000208, 0x20000, 0x8000000,
    0x8020208, 0x8, 0x20208, 0x20200, 0x8000008, 0x8020000, 0x8000208, 0x208, 0x8020000, 0x20208,
    0x8, 0x8020008, 0x20200,
  ];
  const spfunction4 = [
    0x802001, 0x2081, 0x2081, 0x80, 0x802080, 0x800081, 0x800001, 0x2001, 0, 0x802000, 0x802000,
    0x802081, 0x81, 0, 0x800080, 0x800001, 0x1, 0x2000, 0x800000, 0x802001, 0x80, 0x800000, 0x2001,
    0x2080, 0x800081, 0x1, 0x2080, 0x800080, 0x2000, 0x802080, 0x802081, 0x81, 0x800080, 0x800001,
    0x802000, 0x802081, 0x81, 0, 0, 0x802000, 0x2080, 0x800080, 0x800081, 0x1, 0x802001, 0x2081,
    0x2081, 0x80, 0x802081, 0x81, 0x1, 0x2000, 0x800001, 0x2001, 0x802080, 0x800081, 0x2001, 0x2080,
    0x800000, 0x802001, 0x80, 0x800000, 0x2000, 0x802080,
  ];
  const spfunction5 = [
    0x100, 0x2080100, 0x2080000, 0x42000100, 0x80000, 0x100, 0x40000000, 0x2080000, 0x40080100,
    0x80000, 0x2000100, 0x40080100, 0x42000100, 0x42080000, 0x80100, 0x40000000, 0x2000000,
    0x40080000, 0x40080000, 0, 0x40000100, 0x42080100, 0x42080100, 0x2000100, 0x42080000,
    0x40000100, 0, 0x42000000, 0x2080100, 0x2000000, 0x42000000, 0x80100, 0x80000, 0x42000100,
    0x100, 0x2000000, 0x40000000, 0x2080000, 0x42000100, 0x40080100, 0x2000100, 0x40000000,
    0x42080000, 0x2080100, 0x40080100, 0x100, 0x2000000, 0x42080000, 0x42080100, 0x80100,
    0x42000000, 0x42080100, 0x2080000, 0, 0x40080000, 0x42000000, 0x80100, 0x2000100, 0x40000100,
    0x80000, 0, 0x40080000, 0x2080100, 0x40000100,
  ];
  const spfunction6 = [
    0x20000010, 0x20400000, 0x4000, 0x20404010, 0x20400000, 0x10, 0x20404010, 0x400000, 0x20004000,
    0x404010, 0x400000, 0x20000010, 0x400010, 0x20004000, 0x20000000, 0x4010, 0, 0x400010,
    0x20004010, 0x4000, 0x404000, 0x20004010, 0x10, 0x20400010, 0x20400010, 0, 0x404010, 0x20404000,
    0x4010, 0x404000, 0x20404000, 0x20000000, 0x20004000, 0x10, 0x20400010, 0x404000, 0x20404010,
    0x400000, 0x4010, 0x20000010, 0x400000, 0x20004000, 0x20000000, 0x4010, 0x20000010, 0x20404010,
    0x404000, 0x20400000, 0x404010, 0x20404000, 0, 0x20400010, 0x10, 0x4000, 0x20400000, 0x404010,
    0x4000, 0x400010, 0x20004010, 0, 0x20404000, 0x20000000, 0x400010, 0x20004010,
  ];
  const spfunction7 = [
    0x200000, 0x4200002, 0x4000802, 0, 0x800, 0x4000802, 0x200802, 0x4200800, 0x4200802, 0x200000,
    0, 0x4000002, 0x2, 0x4000000, 0x4200002, 0x802, 0x4000800, 0x200802, 0x200002, 0x4000800,
    0x4000002, 0x4200000, 0x4200800, 0x200002, 0x4200000, 0x800, 0x802, 0x4200802, 0x200800, 0x2,
    0x4000000, 0x200800, 0x4000000, 0x200800, 0x200000, 0x4000802, 0x4000802, 0x4200002, 0x4200002,
    0x2, 0x200002, 0x4000000, 0x4000800, 0x200000, 0x4200800, 0x802, 0x200802, 0x4200800, 0x802,
    0x4000002, 0x4200802, 0x4200000, 0x200800, 0, 0x2, 0x4200802, 0, 0x200802, 0x4200000, 0x800,
    0x4000002, 0x4000800, 0x800, 0x200002,
  ];
  const spfunction8 = [
    0x10001040, 0x1000, 0x40000, 0x10041040, 0x10000000, 0x10001040, 0x40, 0x10000000, 0x40040,
    0x10040000, 0x10041040, 0x41000, 0x10041000, 0x41040, 0x1000, 0x40, 0x10040000, 0x10000040,
    0x10001000, 0x1040, 0x41000, 0x40040, 0x10040040, 0x10041000, 0x1040, 0, 0, 0x10040040,
    0x10000040, 0x10001000, 0x41040, 0x40000, 0x41040, 0x40000, 0x10041000, 0x1000, 0x40,
    0x10040040, 0x1000, 0x41040, 0x10001000, 0x40, 0x10000040, 0x10040000, 0x10040040, 0x10000000,
    0x40000, 0x10001040, 0, 0x10041040, 0x40040, 0x10000040, 0x10040000, 0x10001000, 0x10001040, 0,
    0x10041040, 0x41000, 0x41000, 0x1040, 0x1040, 0x40040, 0x10000000, 0x10041000,
  ];

  //create the 16 or 48 subkeys we will need
  const keys = des_createKeys(key);
  let m = 0,
    i,
    j,
    temp,
    temp2,
    right1,
    right2,
    left,
    right,
    looping;
  let cbcleft, cbcleft2, cbcright, cbcright2;
  let endloop, loopinc;
  var len = message.length;
  let chunk = 0;
  //set up the loops for single and triple des
  const iterations = keys.length == 32 ? 3 : 9; //single or triple des
  if (iterations == 3) {
    looping = encrypt ? [0, 32, 2] : [30, -2, -2];
  } else {
    looping = encrypt ? [0, 32, 2, 62, 30, -2, 64, 96, 2] : [94, 62, -2, 32, 64, 2, 30, -2, -2];
  }

  //pad the message depending on the padding parameter
  if (padding == 2)
    message += '        '; //pad the message with spaces
  else if (padding == 1) {
    if (encrypt) {
      temp = 8 - (len % 8);
      message += String.fromCharCode(temp, temp, temp, temp, temp, temp, temp, temp);
      if (temp === 8) len += 8;
    }
  } //PKCS7 padding
  else if (!padding) message += '\0\0\0\0\0\0\0\0'; //pad the message out with null bytes

  //store the result here
  let result = '';
  let tempresult = '';

  if (mode == 1) {
    //CBC mode
    cbcleft =
      (iv.charCodeAt(m++) << 24) |
      (iv.charCodeAt(m++) << 16) |
      (iv.charCodeAt(m++) << 8) |
      iv.charCodeAt(m++);
    cbcright =
      (iv.charCodeAt(m++) << 24) |
      (iv.charCodeAt(m++) << 16) |
      (iv.charCodeAt(m++) << 8) |
      iv.charCodeAt(m++);
    m = 0;
  }

  //loop through each 64 bit chunk of the message
  while (m < len) {
    left =
      (message.charCodeAt(m++) << 24) |
      (message.charCodeAt(m++) << 16) |
      (message.charCodeAt(m++) << 8) |
      message.charCodeAt(m++);
    right =
      (message.charCodeAt(m++) << 24) |
      (message.charCodeAt(m++) << 16) |
      (message.charCodeAt(m++) << 8) |
      message.charCodeAt(m++);

    //for Cipher Block Chaining mode, xor the message with the previous result
    if (mode == 1) {
      if (encrypt) {
        left ^= cbcleft;
        right ^= cbcright;
      } else {
        cbcleft2 = cbcleft;
        cbcright2 = cbcright;
        cbcleft = left;
        cbcright = right;
      }
    }

    //first each 64 but chunk of the message must be permuted according to IP
    temp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
    right ^= temp;
    left ^= temp << 4;
    temp = ((left >>> 16) ^ right) & 0x0000ffff;
    right ^= temp;
    left ^= temp << 16;
    temp = ((right >>> 2) ^ left) & 0x33333333;
    left ^= temp;
    right ^= temp << 2;
    temp = ((right >>> 8) ^ left) & 0x00ff00ff;
    left ^= temp;
    right ^= temp << 8;
    temp = ((left >>> 1) ^ right) & 0x55555555;
    right ^= temp;
    left ^= temp << 1;

    left = (left << 1) | (left >>> 31);
    right = (right << 1) | (right >>> 31);

    //do this either 1 or 3 times for each chunk of the message
    for (j = 0; j < iterations; j += 3) {
      endloop = looping[j + 1];
      loopinc = looping[j + 2];
      //now go through and perform the encryption or decryption
      for (i = looping[j]; i != endloop; i += loopinc) {
        //for efficiency
        right1 = right ^ keys[i];
        right2 = ((right >>> 4) | (right << 28)) ^ keys[i + 1];
        //the result is attained by passing these bytes through the S selection functions
        temp = left;
        left = right;
        right =
          temp ^
          (spfunction2[(right1 >>> 24) & 0x3f] |
            spfunction4[(right1 >>> 16) & 0x3f] |
            spfunction6[(right1 >>> 8) & 0x3f] |
            spfunction8[right1 & 0x3f] |
            spfunction1[(right2 >>> 24) & 0x3f] |
            spfunction3[(right2 >>> 16) & 0x3f] |
            spfunction5[(right2 >>> 8) & 0x3f] |
            spfunction7[right2 & 0x3f]);
      }
      temp = left;
      left = right;
      right = temp; //unreverse left and right
    } //for either 1 or 3 iterations

    //move then each one bit to the right
    left = (left >>> 1) | (left << 31);
    right = (right >>> 1) | (right << 31);

    //now perform IP-1, which is IP in the opposite direction
    temp = ((left >>> 1) ^ right) & 0x55555555;
    right ^= temp;
    left ^= temp << 1;
    temp = ((right >>> 8) ^ left) & 0x00ff00ff;
    left ^= temp;
    right ^= temp << 8;
    temp = ((right >>> 2) ^ left) & 0x33333333;
    left ^= temp;
    right ^= temp << 2;
    temp = ((left >>> 16) ^ right) & 0x0000ffff;
    right ^= temp;
    left ^= temp << 16;
    temp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
    right ^= temp;
    left ^= temp << 4;

    //for Cipher Block Chaining mode, xor the message with the previous result
    if (mode == 1) {
      if (encrypt) {
        cbcleft = left;
        cbcright = right;
      } else {
        left ^= cbcleft2;
        right ^= cbcright2;
      }
    }
    tempresult += String.fromCharCode(
      left >>> 24,
      (left >>> 16) & 0xff,
      (left >>> 8) & 0xff,
      left & 0xff,
      right >>> 24,
      (right >>> 16) & 0xff,
      (right >>> 8) & 0xff,
      right & 0xff
    );

    chunk += 8;
    if (chunk == 512) {
      result += tempresult;
      tempresult = '';
      chunk = 0;
    }
  } //for every 8 characters, or 64 bits in the message

  //return the result as an array
  result += tempresult;
  if (!encrypt) result = result.replace(/\0*$/g, '');

  if (!encrypt) {
    //如果是解密的话，解密结束后对PKCS7 padding进行解码，并转换成utf-8编码
    if (padding === 1) {
      //PKCS7 padding解码
      var len = result.length,
        paddingChars = 0;
      len && (paddingChars = result.charCodeAt(len - 1));
      paddingChars <= 8 && (result = result.substring(0, len - paddingChars));
    }
    //转换成UTF-8编码
    result = decodeURIComponent(escape(result));
  }

  return result;
} //end of des

//des_createKeys
//this takes as input a 64 bit key (even though only 56 bits are used)
//as an array of 2 integers, and returns 16 48 bit keys
function des_createKeys(key) {
  //declaring this locally speeds things up a bit
  const pc2bytes0 = [
    0, 0x4, 0x20000000, 0x20000004, 0x10000, 0x10004, 0x20010000, 0x20010004, 0x200, 0x204,
    0x20000200, 0x20000204, 0x10200, 0x10204, 0x20010200, 0x20010204,
  ];
  const pc2bytes1 = [
    0, 0x1, 0x100000, 0x100001, 0x4000000, 0x4000001, 0x4100000, 0x4100001, 0x100, 0x101, 0x100100,
    0x100101, 0x4000100, 0x4000101, 0x4100100, 0x4100101,
  ];
  const pc2bytes2 = [
    0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808, 0, 0x8, 0x800, 0x808,
    0x1000000, 0x1000008, 0x1000800, 0x1000808,
  ];
  const pc2bytes3 = [
    0, 0x200000, 0x8000000, 0x8200000, 0x2000, 0x202000, 0x8002000, 0x8202000, 0x20000, 0x220000,
    0x8020000, 0x8220000, 0x22000, 0x222000, 0x8022000, 0x8222000,
  ];
  const pc2bytes4 = [
    0, 0x40000, 0x10, 0x40010, 0, 0x40000, 0x10, 0x40010, 0x1000, 0x41000, 0x1010, 0x41010, 0x1000,
    0x41000, 0x1010, 0x41010,
  ];
  const pc2bytes5 = [
    0, 0x400, 0x20, 0x420, 0, 0x400, 0x20, 0x420, 0x2000000, 0x2000400, 0x2000020, 0x2000420,
    0x2000000, 0x2000400, 0x2000020, 0x2000420,
  ];
  const pc2bytes6 = [
    0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002, 0, 0x10000000,
    0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002,
  ];
  const pc2bytes7 = [
    0, 0x10000, 0x800, 0x10800, 0x20000000, 0x20010000, 0x20000800, 0x20010800, 0x20000, 0x30000,
    0x20800, 0x30800, 0x20020000, 0x20030000, 0x20020800, 0x20030800,
  ];
  const pc2bytes8 = [
    0, 0x40000, 0, 0x40000, 0x2, 0x40002, 0x2, 0x40002, 0x2000000, 0x2040000, 0x2000000, 0x2040000,
    0x2000002, 0x2040002, 0x2000002, 0x2040002,
  ];
  const pc2bytes9 = [
    0, 0x10000000, 0x8, 0x10000008, 0, 0x10000000, 0x8, 0x10000008, 0x400, 0x10000400, 0x408,
    0x10000408, 0x400, 0x10000400, 0x408, 0x10000408,
  ];
  const pc2bytes10 = [
    0, 0x20, 0, 0x20, 0x100000, 0x100020, 0x100000, 0x100020, 0x2000, 0x2020, 0x2000, 0x2020,
    0x102000, 0x102020, 0x102000, 0x102020,
  ];
  const pc2bytes11 = [
    0, 0x1000000, 0x200, 0x1000200, 0x200000, 0x1200000, 0x200200, 0x1200200, 0x4000000, 0x5000000,
    0x4000200, 0x5000200, 0x4200000, 0x5200000, 0x4200200, 0x5200200,
  ];
  const pc2bytes12 = [
    0, 0x1000, 0x8000000, 0x8001000, 0x80000, 0x81000, 0x8080000, 0x8081000, 0x10, 0x1010,
    0x8000010, 0x8001010, 0x80010, 0x81010, 0x8080010, 0x8081010,
  ];
  const pc2bytes13 = [
    0, 0x4, 0x100, 0x104, 0, 0x4, 0x100, 0x104, 0x1, 0x5, 0x101, 0x105, 0x1, 0x5, 0x101, 0x105,
  ];

  //how many iterations (1 for des, 3 for triple des)
  const iterations = key.length > 8 ? 3 : 1; //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
  //stores the return keys
  const keys = new Array(32 * iterations);
  //now define the left shifts which need to be done
  const shifts = [0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0];
  //other variables
  let lefttemp,
    righttemp,
    m = 0,
    n = 0,
    temp;

  for (let j = 0; j < iterations; j++) {
    //either 1 or 3 iterations
    let left =
      (key.charCodeAt(m++) << 24) |
      (key.charCodeAt(m++) << 16) |
      (key.charCodeAt(m++) << 8) |
      key.charCodeAt(m++);
    let right =
      (key.charCodeAt(m++) << 24) |
      (key.charCodeAt(m++) << 16) |
      (key.charCodeAt(m++) << 8) |
      key.charCodeAt(m++);

    temp = ((left >>> 4) ^ right) & 0x0f0f0f0f;
    right ^= temp;
    left ^= temp << 4;
    temp = ((right >>> -16) ^ left) & 0x0000ffff;
    left ^= temp;
    right ^= temp << -16;
    temp = ((left >>> 2) ^ right) & 0x33333333;
    right ^= temp;
    left ^= temp << 2;
    temp = ((right >>> -16) ^ left) & 0x0000ffff;
    left ^= temp;
    right ^= temp << -16;
    temp = ((left >>> 1) ^ right) & 0x55555555;
    right ^= temp;
    left ^= temp << 1;
    temp = ((right >>> 8) ^ left) & 0x00ff00ff;
    left ^= temp;
    right ^= temp << 8;
    temp = ((left >>> 1) ^ right) & 0x55555555;
    right ^= temp;
    left ^= temp << 1;

    //the right side needs to be shifted and to get the last four bits of the left side
    temp = (left << 8) | ((right >>> 20) & 0x000000f0);
    //left needs to be put upside down
    left =
      (right << 24) |
      ((right << 8) & 0xff0000) |
      ((right >>> 8) & 0xff00) |
      ((right >>> 24) & 0xf0);
    right = temp;

    //now go through and perform these shifts on the left and right keys
    for (let i = 0; i < shifts.length; i++) {
      //shift the keys either one or two bits to the left
      if (shifts[i]) {
        left = (left << 2) | (left >>> 26);
        right = (right << 2) | (right >>> 26);
      } else {
        left = (left << 1) | (left >>> 27);
        right = (right << 1) | (right >>> 27);
      }
      left &= -0xf;
      right &= -0xf;

      //now apply PC-2, in such a way that E is easier when encrypting or decrypting
      //this conversion will look like PC-2 except only the last 6 bits of each byte are used
      //rather than 48 consecutive bits and the order of lines will be according to
      //how the S selection functions will be applied: S2, S4, S6, S8, S1, S3, S5, S7
      lefttemp =
        pc2bytes0[left >>> 28] |
        pc2bytes1[(left >>> 24) & 0xf] |
        pc2bytes2[(left >>> 20) & 0xf] |
        pc2bytes3[(left >>> 16) & 0xf] |
        pc2bytes4[(left >>> 12) & 0xf] |
        pc2bytes5[(left >>> 8) & 0xf] |
        pc2bytes6[(left >>> 4) & 0xf];
      righttemp =
        pc2bytes7[right >>> 28] |
        pc2bytes8[(right >>> 24) & 0xf] |
        pc2bytes9[(right >>> 20) & 0xf] |
        pc2bytes10[(right >>> 16) & 0xf] |
        pc2bytes11[(right >>> 12) & 0xf] |
        pc2bytes12[(right >>> 8) & 0xf] |
        pc2bytes13[(right >>> 4) & 0xf];
      temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff;
      keys[n++] = lefttemp ^ temp;
      keys[n++] = righttemp ^ (temp << 16);
    }
  } //for each iterations
  //return the keys we've created
  return keys;
} //end of des_createKeys
function genkey(key, start, end) {
  //8 byte / 64 bit Key (DES) or 192 bit Key
  return { key: pad(key.slice(start, end)), vector: 1 };
}

function pad(key) {
  for (let i = key.length; i < 24; i++) {
    key += '0';
  }
  return key;
}
//3DES加密，使用PKCS7 padding
function encrypt_3des(key, input) {
  const genKey = genkey(key, 0, 24);
  return btoa(des(genKey.key, input, 1, 0, 0, 1));
}
//3DES解密，使用PKCS7 padding
function decrypt_3des(key, input) {
  const genKey = genkey(key, 0, 24);
  return des(genKey.key, atob(input), 0, 0, 0, 1);
}

////////////////////////////// TEST //////////////////////////////
export function stringToHex(s) {
  let r = '0x';
  const hexes = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'];
  for (let i = 0; i < s.length; i++) {
    r += hexes[s.charCodeAt(i) >> 4] + hexes[s.charCodeAt(i) & 0xf];
  }
  return r;
}

export function stringToHexArray(s) {
  const arr = [];
  const hexes = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'];
  for (let i = 0; i < s.length; i++) {
    arr.push(hexes[s.charCodeAt(i) >> 4] + hexes[s.charCodeAt(i) & 0xf]);
  }
  return arr;
}

export function hexToString(h) {
  let r = '';
  for (let i = h.substr(0, 2) == '0x' ? 2 : 0; i < h.length; i += 2) {
    r += String.fromCharCode(parseInt(h.substr(i, 2), 16));
  }
  return r;
}

/* eslint-enable */