telegram-mtproto/lib/bin.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.bigint = bigint;
exports.bigStringInt = bigStringInt;
exports.dHexDump = dHexDump;
exports.bytesToHex = bytesToHex;
exports.bytesFromHex = bytesFromHex;
exports.bytesToBase64 = bytesToBase64;
exports.uint6ToBase64 = uint6ToBase64;
exports.bytesCmp = bytesCmp;
exports.bytesXor = bytesXor;
exports.bytesToWords = bytesToWords;
exports.bytesFromWords = bytesFromWords;
exports.bytesFromBigInt = bytesFromBigInt;
exports.bytesFromLeemonBigInt = bytesFromLeemonBigInt;
exports.bytesToArrayBuffer = bytesToArrayBuffer;
exports.convertToArrayBuffer = convertToArrayBuffer;
exports.convertToUint8Array = convertToUint8Array;
exports.convertToByteArray = convertToByteArray;
exports.bytesFromArrayBuffer = bytesFromArrayBuffer;
exports.bufferConcat = bufferConcat;
exports.longToInts = longToInts;
exports.longToBytes = longToBytes;
exports.longFromInts = longFromInts;
exports.intToUint = intToUint;
exports.uintToInt = uintToInt;
exports.sha1HashSync = sha1HashSync;
exports.sha1BytesSync = sha1BytesSync;
exports.sha256HashSync = sha256HashSync;
exports.rsaEncrypt = rsaEncrypt;
exports.addPadding = addPadding;
exports.aesEncryptSync = aesEncryptSync;
exports.aesDecryptSync = aesDecryptSync;
exports.gzipUncompress = gzipUncompress;
exports.nextRandomInt = nextRandomInt;
exports.pqPrimeFactorization = pqPrimeFactorization;
exports.pqPrimeJsbn = pqPrimeJsbn;
exports.pqPrimeLeemon = pqPrimeLeemon;
exports.bytesModPow = bytesModPow;

var _jsbn = require('jsbn');

var _rusha = require('rusha');

var _rusha2 = _interopRequireDefault(_rusha);

var _nodeCryptojsAes = require('@goodmind/node-cryptojs-aes');

var CryptoJSlib = _interopRequireWildcard(_nodeCryptojsAes);

var _inflate = require('pako/lib/inflate');

var _leemon = require('./leemon');

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const { CryptoJS } = CryptoJSlib;

// import Int from 'big-integer'

// import BN from 'bn.js'

// import { bigInt2str } from 'BigInt'

// const { BigInteger } = jsbn

const rushaInstance = new _rusha2.default(1024 * 1024);

function bigint(num) {
  return new _jsbn.BigInteger(num.toString(16), 16);
}

function bigStringInt(strNum) {
  return new _jsbn.BigInteger(strNum, 10);
}

function dHexDump(bytes) {
  const arr = [];
  for (let i = 0; i < bytes.length; i++) {
    if (i && !(i % 2)) {
      if (!(i % 16)) {
        arr.push('\n');
      } else if (!(i % 4)) {
        arr.push('  ');
      } else {
        arr.push(' ');
      }
    }
    arr.push((bytes[i] < 16 ? '0' : '') + bytes[i].toString(16));
  }

  console.log(arr.join(''));
}

function bytesToHex(bytes = []) {
  const arr = [];
  for (let i = 0; i < bytes.length; i++) {
    arr.push((bytes[i] < 16 ? '0' : '') + (bytes[i] || 0).toString(16));
  }
  return arr.join('');
}

function bytesFromHex(hexString) {
  const len = hexString.length;
  let start = 0;
  const bytes = [];

  if (hexString.length % 2) {
    bytes.push(parseInt(hexString.charAt(0), 16));
    start++;
  }

  for (let i = start; i < len; i += 2) {
    bytes.push(parseInt(hexString.substr(i, 2), 16));
  }

  return bytes;
}

function bytesToBase64(bytes) {
  let mod3;
  let result = '';

  for (let nLen = bytes.length, nUint24 = 0, nIdx = 0; nIdx < nLen; nIdx++) {
    mod3 = nIdx % 3;
    nUint24 |= bytes[nIdx] << (16 >>> mod3 & 24);
    if (mod3 === 2 || nLen - nIdx === 1) {
      result += String.fromCharCode(uint6ToBase64(nUint24 >>> 18 & 63), uint6ToBase64(nUint24 >>> 12 & 63), uint6ToBase64(nUint24 >>> 6 & 63), uint6ToBase64(nUint24 & 63));
      nUint24 = 0;
    }
  }

  return result.replace(/A(?=A$|$)/g, '=');
}

function uint6ToBase64(nUint6) {
  return nUint6 < 26 ? nUint6 + 65 : nUint6 < 52 ? nUint6 + 71 : nUint6 < 62 ? nUint6 - 4 : nUint6 === 62 ? 43 : nUint6 === 63 ? 47 : 65;
}

// export function base64ToBlob(base64str, mimeType) {
//   const sliceSize = 1024
//   const byteCharacters = atob(base64str)
//   const bytesLength = byteCharacters.length
//   const slicesCount = Math.ceil(bytesLength / sliceSize)
//   const byteArrays = new Array(slicesCount)

//   for (let sliceIndex = 0; sliceIndex < slicesCount; ++sliceIndex) {
//     const begin = sliceIndex * sliceSize
//     const end = Math.min(begin + sliceSize, bytesLength)

//     const bytes = new Array(end - begin)
//     for (let offset = begin, i = 0; offset < end; ++i, ++offset) {
//       bytes[i] = byteCharacters[offset].charCodeAt(0)
//     }
//     byteArrays[sliceIndex] = new Uint8Array(bytes)
//   }

//   return blobConstruct(byteArrays, mimeType)
// }

// export function dataUrlToBlob(url) {
//   // var name = 'b64blob ' + url.length
//   // console.time(name)
//   const urlParts = url.split(',')
//   const base64str = urlParts[1]
//   const mimeType = urlParts[0].split(':')[1].split(';')[0]
//   const blob = base64ToBlob(base64str, mimeType)
//   // console.timeEnd(name)
//   return blob
// }

// export function blobConstruct(blobParts, mimeType) {
//   let blob
//   try {
//     blob = new Blob(blobParts, { type: mimeType })
//   } catch (e) {
//     const bb = new BlobBuilder
//     angular.forEach(blobParts, function(blobPart) {
//       bb.append(blobPart)
//     })
//     blob = bb.getBlob(mimeType)
//   }
//   return blob
// }

function bytesCmp(bytes1, bytes2) {
  const len = bytes1.length;
  if (len !== bytes2.length) {
    return false;
  }

  for (let i = 0; i < len; i++) {
    if (bytes1[i] !== bytes2[i]) return false;
  }
  return true;
}

function bytesXor(bytes1, bytes2) {
  const len = bytes1.length;
  const bytes = [];

  for (let i = 0; i < len; ++i) {
    bytes[i] = bytes1[i] ^ bytes2[i];
  }

  return bytes;
}

function bytesToWords(bytes) {
  if (bytes instanceof ArrayBuffer) {
    bytes = new Uint8Array(bytes);
  }
  const len = bytes.length;
  const words = [];
  let i;
  for (i = 0; i < len; i++) {
    words[i >>> 2] |= bytes[i] << 24 - i % 4 * 8;
  }

  return new CryptoJS.lib.WordArray.init(words, len);
}

function bytesFromWords(wordArray) {
  const words = wordArray.words;
  const sigBytes = wordArray.sigBytes;
  const bytes = [];

  for (let i = 0; i < sigBytes; i++) {
    bytes.push(words[i >>> 2] >>> 24 - i % 4 * 8 & 0xff);
  }

  return bytes;
}

function bytesFromBigInt(bigInt, len) {
  let bytes = bigInt.toByteArray();

  if (len && bytes.length < len) {
    const padding = [];
    for (let i = 0, needPadding = len - bytes.length; i < needPadding; i++) {
      padding[i] = 0;
    }
    if (bytes instanceof ArrayBuffer) {
      bytes = bufferConcat(padding, bytes);
    } else {
      bytes = padding.concat(bytes);
    }
  } else {
    while (!bytes[0] && (!len || bytes.length > len)) {
      bytes = bytes.slice(1);
    }
  }

  return bytes;
}

function bytesFromLeemonBigInt(bigInt, len) {
  const str = (0, _leemon.bigInt2str)(bigInt, 16);
  return bytesFromHex(str);
}

function bytesToArrayBuffer(b) {
  return new Uint8Array(b).buffer;
}

function convertToArrayBuffer(bytes) {
  // Be careful with converting subarrays!!
  if (bytes instanceof ArrayBuffer) {
    return bytes;
  }
  if (bytes.buffer !== undefined && bytes.buffer.byteLength == bytes.length * bytes.BYTES_PER_ELEMENT) {
    return bytes.buffer;
  }
  return bytesToArrayBuffer(bytes);
}

function convertToUint8Array(bytes) {
  if (bytes.buffer !== undefined) {
    return bytes;
  }
  return new Uint8Array(bytes);
}

function convertToByteArray(bytes) {
  if (Array.isArray(bytes)) {
    return bytes;
  }
  bytes = convertToUint8Array(bytes);
  const newBytes = [];
  for (let i = 0, len = bytes.length; i < len; i++) {
    newBytes.push(bytes[i]);
  }
  return newBytes;
}

function bytesFromArrayBuffer(buffer) {
  const byteView = new Uint8Array(buffer);
  const bytes = Array.from(byteView);
  return bytes;
}

function bufferConcat(buffer1, buffer2) {
  const l1 = buffer1.byteLength || buffer1.length;
  const l2 = buffer2.byteLength || buffer2.length;
  const tmp = new Uint8Array(l1 + l2);
  tmp.set(buffer1 instanceof ArrayBuffer ? new Uint8Array(buffer1) : buffer1, 0);
  tmp.set(buffer2 instanceof ArrayBuffer ? new Uint8Array(buffer2) : buffer2, l1);

  return tmp.buffer;
}

function longToInts(sLong) {
  const divRem = bigStringInt(sLong).divideAndRemainder(bigint(0x100000000));

  return [divRem[0].intValue(), divRem[1].intValue()];
}

function longToBytes(sLong) {
  return bytesFromWords({ words: longToInts(sLong), sigBytes: 8 }).reverse();
}

function longFromInts(high, low) {
  return bigint(high).shiftLeft(32).add(bigint(low)).toString(10);
}

function intToUint(val) {
  val = parseInt(val);
  if (val < 0) {
    val = val + 4294967296;
  }
  return val;
}

function uintToInt(val) {
  if (val > 2147483647) {
    val = val - 4294967296;
  }
  return val;
}

function sha1HashSync(bytes) {
  // console.log(dT(), 'SHA-1 hash start', bytes.byteLength || bytes.length)
  const hashBytes = rushaInstance.rawDigest(bytes).buffer;
  // console.log(dT(), 'SHA-1 hash finish')

  return hashBytes;
}

function sha1BytesSync(bytes) {
  return bytesFromArrayBuffer(sha1HashSync(bytes));
}

function sha256HashSync(bytes) {
  // console.log(dT(), 'SHA-2 hash start', bytes.byteLength || bytes.length)
  const hashWords = CryptoJS.SHA256(bytesToWords(bytes));
  // console.log(dT(), 'SHA-2 hash finish')

  const hashBytes = bytesFromWords(hashWords);

  return hashBytes;
}

function rsaEncrypt(publicKey, bytes) {
  bytes = addPadding(bytes, 255);

  // console.log('RSA encrypt start')
  const N = new _jsbn.BigInteger(publicKey.modulus, 16);
  const E = new _jsbn.BigInteger(publicKey.exponent, 16);
  const X = new _jsbn.BigInteger(bytes);
  const encryptedBigInt = X.modPowInt(E, N),
        encryptedBytes = bytesFromBigInt(encryptedBigInt, 256);
  // console.log('RSA encrypt finish')

  return encryptedBytes;
}

function addPadding(bytes, blockSize, zeroes) {
  blockSize = blockSize || 16;
  const len = bytes.byteLength || bytes.length;
  const needPadding = blockSize - len % blockSize;
  if (needPadding > 0 && needPadding < blockSize) {
    const padding = new Array(needPadding);
    if (zeroes) {
      for (let i = 0; i < needPadding; i++) {
        padding[i] = 0;
      }
    } else {
      new _jsbn.SecureRandom().nextBytes(padding);
    }

    if (bytes instanceof ArrayBuffer) {
      bytes = bufferConcat(bytes, padding);
    } else {
      bytes = bytes.concat(padding);
    }
  }

  return bytes;
}

function aesEncryptSync(bytes, keyBytes, ivBytes) {
  const len = bytes.byteLength || bytes.length;

  // console.log(dT(), 'AES encrypt start', len/*, bytesToHex(keyBytes), bytesToHex(ivBytes)*/)
  bytes = addPadding(bytes);

  const encryptedWords = CryptoJS.AES.encrypt(bytesToWords(bytes), bytesToWords(keyBytes), {
    iv: bytesToWords(ivBytes),
    padding: CryptoJS.pad.NoPadding,
    mode: CryptoJS.mode.IGE
  }).ciphertext;

  const encryptedBytes = bytesFromWords(encryptedWords);
  // console.log(dT(), 'AES encrypt finish')

  return encryptedBytes;
}

function aesDecryptSync(encryptedBytes, keyBytes, ivBytes) {

  // console.log(dT(), 'AES decrypt start', encryptedBytes.length)
  const decryptedWords = CryptoJS.AES.decrypt({ ciphertext: bytesToWords(encryptedBytes) }, bytesToWords(keyBytes), {
    iv: bytesToWords(ivBytes),
    padding: CryptoJS.pad.NoPadding,
    mode: CryptoJS.mode.IGE
  });

  const bytes = bytesFromWords(decryptedWords);
  // console.log(dT(), 'AES decrypt finish')

  return bytes;
}

function gzipUncompress(bytes) {
  // console.log('Gzip uncompress start')
  const result = (0, _inflate.inflate)(bytes);
  // console.log('Gzip uncompress finish')
  return result;
}

function nextRandomInt(maxValue) {
  return Math.floor(Math.random() * maxValue);
}

// const bytesToInt = bytes => Int(bytesToHex(bytes), 16)
// const bytesFromInt = int => bytesFromHex(int.toString(16))

function pqPrimeFactorization(pqBytes) {
  const what = new _jsbn.BigInteger(pqBytes);
  // const whatInt = bytesToInt(pqBytes)
  // const whatBn = new BN(bytesToHex(pqBytes), 16)
  let result = false;
  // let intRes = []
  // const bnRes = []
  // console.log(dT(), 'PQ start', pqBytes, what.toString(16), what.bitLength())

  // try {
  // console.time('pq leemon')
  // const toHex = bytesToHex(pqBytes)
  result = pqPrimeLeemon((0, _leemon.str2bigInt)(what.toString(16), 16, Math.ceil(64 / _leemon.bpe) + 1));
  // console.timeEnd('pq leemon')
  // } catch (e) {
  //   console.error('Pq leemon Exception', e)
  // }

  /*if (result === false && what.bitLength() <= 64) {
    // console.time('PQ long')
    try {
      result = pqPrimeLong(goog.math.Long.fromString(what.toString(16), 16))
    } catch (e) {
      console.error('Pq long Exception', e)
    }
  // console.timeEnd('PQ long')
  }*/
  // console.log(result)

  // if (result === false) {
  // console.time('pq BigInt')
  // intRes = pqPrimeJsbn(what)
  // console.timeEnd('pq BigInt')

  // console.time('pq bn')
  // bnRes = pqPrimeBN(whatBn)
  // console.timeEnd('pq bn')
  // }
  // console.log(...result, ...bnRes)
  // console.log(dT(), 'PQ finish')

  return result;
  //intRes//result//bnRes
}

/*export function pqPrimeBN(what) {
  let it = 0,
      g
  const nOne = new BN(1)
  for (let i = 0; i < 3; i++) {
    const q = (nextRandomInt(128) & 15) + 17
    let x = new BN(nextRandomInt(1000000000) + 1)
    let y = x.clone()
    const lim = 1 << (i + 18)

    for (let j = 1; j < lim; j++) {
      ++it
      let a = x.clone()
      let b = x.clone()
      let c = new BN(q)

      while (!b.isZero()) {
        if (!b.and(nOne).isZero()) {
          c = c.add(a)
          if (c.gt(what)) {
            c = c.sub(what)
          }
        }
        a = a.add(a)
        if (a.gt(what)) {
          a = a.sub(what)
        }
        b = b.shrn(1)
      }

      x = c.clone()
      const z = x.lt(y)
        ? y.sub(x)
        : x.sub(y)
      g = z.gcd(what)
      if (!g.eq(nOne)) {
        break
      }
      if ((j & (j - 1)) == 0) {
        y = x.clone()
      }
    }
    if (g.gt(nOne)) {
      break
    }
  }

  let f = what.div(g), P, Q

  if (g.gt(f)) {
    P = f
    Q = g
  } else {
    P = g
    Q = f
  }

  return [P.toArray(), Q.toArray(), it]
}*/

function pqPrimeJsbn(what) {
  let it = 0,
      g;
  for (let i = 0; i < 3; i++) {
    const q = (nextRandomInt(128) & 15) + 17;
    let x = bigint(nextRandomInt(1000000000) + 1);
    let y = x.clone();
    const lim = 1 << i + 18;

    for (let j = 1; j < lim; j++) {
      ++it;
      let a = x.clone();
      let b = x.clone();
      let c = bigint(q);

      while (!b.equals(_jsbn.BigInteger.ZERO)) {
        if (!b.and(_jsbn.BigInteger.ONE).equals(_jsbn.BigInteger.ZERO)) {
          c = c.add(a);
          if (c.compareTo(what) > 0) {
            c = c.subtract(what);
          }
        }
        a = a.add(a);
        if (a.compareTo(what) > 0) {
          a = a.subtract(what);
        }
        b = b.shiftRight(1);
      }

      x = c.clone();
      const z = x.compareTo(y) < 0 ? y.subtract(x) : x.subtract(y);
      g = z.gcd(what);
      if (!g.equals(_jsbn.BigInteger.ONE)) {
        break;
      }
      if ((j & j - 1) == 0) {
        y = x.clone();
      }
    }
    if (g.compareTo(_jsbn.BigInteger.ONE) > 0) {
      break;
    }
  }

  let f = what.divide(g),
      P,
      Q;

  if (g.compareTo(f) > 0) {
    P = f;
    Q = g;
  } else {
    P = g;
    Q = f;
  }

  return [bytesFromBigInt(P), bytesFromBigInt(Q), it];
}

/*export function pqPrimeBigInteger(what) {
  let it = 0,
      g
  for (let i = 0; i < 3; i++) {
    const q = (nextRandomInt(128) & 15) + 17
    let x = Int(nextRandomInt(1000000000) + 1)
    let y = Int(x)
    const lim = 1 << (i + 18)

    for (let j = 1; j < lim; j++) {
      ++it
      let a = Int(x)
      let b = Int(x)
      let c = Int(q)

      while (!b.isZero()) {
        if (!b.and(Int.one).isZero()) {
          c = c.add(a)
          if (c.greater(what))
            c = c.subtract(what)
        }
        a = a.add(a)
        if (a.greater(what))
          a = a.subtract(what)
        b = b.shiftRight(1)
      }

      x = Int(c)
      const z = x.lesser(y)
        ? y.subtract(x)
        : x.subtract(y)
      g = Int.gcd(z, what)
      if (g.notEquals(Int.one))
        break
      if ((j & (j - 1)) == 0)
        y = Int(x)
    }
    if (g.greater(Int.one))
      break
  }

  const f = what.divide(g)
  let P, Q

  if (g.greater(f)) {
    P = f
    Q = g
  } else {
    P = g
    Q = f
  }

  return [bytesFromInt(P), bytesFromInt(Q), it]
}*/

/*export function gcdLong(a, b) {
  while (a.notEquals(goog.math.Long.ZERO) && b.notEquals(goog.math.Long.ZERO)) {
    while (b.and(goog.math.Long.ONE).equals(goog.math.Long.ZERO)) {
      b = b.shiftRight(1)
    }
    while (a.and(goog.math.Long.ONE).equals(goog.math.Long.ZERO)) {
      a = a.shiftRight(1)
    }
    if (a.compare(b) > 0) {
      a = a.subtract(b)
    } else {
      b = b.subtract(a)
    }
  }
  return b.equals(goog.math.Long.ZERO) ? a : b
}

export function pqPrimeLong(what) {
  let it = 0,
      g
  for (let i = 0; i < 3; i++) {
    const q = goog.math.Long.fromInt((nextRandomInt(128) & 15) + 17)
    let x = goog.math.Long.fromInt(nextRandomInt(1000000000) + 1)
    let y = x
    const lim = 1 << (i + 18)

    for (let j = 1; j < lim; j++) {
      ++it
      let a = x
      let b = x
      let c = q

      while (b.notEquals(goog.math.Long.ZERO)) {
        if (b.and(goog.math.Long.ONE).notEquals(goog.math.Long.ZERO)) {
          c = c.add(a)
          if (c.compare(what) > 0) {
            c = c.subtract(what)
          }
        }
        a = a.add(a)
        if (a.compare(what) > 0) {
          a = a.subtract(what)
        }
        b = b.shiftRight(1)
      }

      x = c
      const z = x.compare(y) < 0 ? y.subtract(x) : x.subtract(y)
      g = gcdLong(z, what)
      if (g.notEquals(goog.math.Long.ONE)) {
        break
      }
      if ((j & (j - 1)) == 0) {
        y = x
      }
    }
    if (g.compare(goog.math.Long.ONE) > 0) {
      break
    }
  }

  let f = what.div(g), P, Q

  if (g.compare(f) > 0) {
    P = f
    Q = g
  } else {
    P = g
    Q = f
  }

  return [bytesFromHex(P.toString(16)), bytesFromHex(Q.toString(16)), it]
}*/

/*//is bigint x equal to integer y?
//y must have less than bpe bits
function equalsInt(x,y) {
  var i;
  if (x[0]!=y)
    return 0;
  for (i=1;i<x.length;i++)
    if (x[i])
      return 0;
  return 1;
}*/

function pqPrimeLeemon(what) {
  const minBits = 64;
  const minLen = Math.ceil(minBits / _leemon.bpe) + 1;
  let it = 0;
  let q, lim;
  const a = new Array(minLen);
  const b = new Array(minLen);
  const c = new Array(minLen);
  const g = new Array(minLen);
  const z = new Array(minLen);
  const x = new Array(minLen);
  const y = new Array(minLen);

  for (let i = 0; i < 3; i++) {
    q = (nextRandomInt(128) & 15) + 17;
    (0, _leemon.copyInt_)(x, nextRandomInt(1000000000) + 1);
    (0, _leemon.copy_)(y, x);
    lim = 1 << i + 18;

    for (let j = 1; j < lim; j++) {
      ++it;
      (0, _leemon.copy_)(a, x);
      (0, _leemon.copy_)(b, x);
      (0, _leemon.copyInt_)(c, q);

      while (!(0, _leemon.isZero)(b)) {
        if (b[0] & 1) {
          (0, _leemon.add_)(c, a);
          if ((0, _leemon.greater)(c, what)) {
            (0, _leemon.sub_)(c, what);
          }
        }
        (0, _leemon.add_)(a, a);
        if ((0, _leemon.greater)(a, what)) {
          (0, _leemon.sub_)(a, what);
        }
        (0, _leemon.rightShift_)(b, 1);
      }

      (0, _leemon.copy_)(x, c);
      if ((0, _leemon.greater)(x, y)) {
        (0, _leemon.copy_)(z, x);
        (0, _leemon.sub_)(z, y);
      } else {
        (0, _leemon.copy_)(z, y);
        (0, _leemon.sub_)(z, x);
      }
      (0, _leemon.eGCD_)(z, what, g, a, b);
      if (!(0, _leemon.equalsInt)(g, 1)) {
        break;
      }
      if ((j & j - 1) === 0) {
        (0, _leemon.copy_)(y, x);
      }
    }
    if ((0, _leemon.greater)(g, _leemon.one)) {
      break;
    }
  }

  (0, _leemon.divide_)(what, g, x, y);

  const [P, Q] = (0, _leemon.greater)(g, x) ? [x, g] : [g, x];

  // console.log(dT(), 'done', bigInt2str(what, 10), bigInt2str(P, 10), bigInt2str(Q, 10))

  return [bytesFromLeemonBigInt(P), bytesFromLeemonBigInt(Q), it];
}

function bytesModPow(x, y, m) {
  try {
    const xBigInt = (0, _leemon.str2bigInt)(bytesToHex(x), 16);
    const yBigInt = (0, _leemon.str2bigInt)(bytesToHex(y), 16);
    const mBigInt = (0, _leemon.str2bigInt)(bytesToHex(m), 16);
    const resBigInt = (0, _leemon.powMod)(xBigInt, yBigInt, mBigInt);

    return bytesFromHex((0, _leemon.bigInt2str)(resBigInt, 16));
  } catch (e) {
    console.error('mod pow error', e);
  }

  return bytesFromBigInt(new _jsbn.BigInteger(x).modPow(new _jsbn.BigInteger(y), new _jsbn.BigInteger(m)), 256);
}
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