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• .. (вверх)
• [DIR] ..
• [FILE] btc.js
• [FILE] eth.js
• [FILE] ltc.js
• [FILE] rmg.js
• [FILE] tbtc.js
• [FILE] teth.js
• [FILE] tltc.js
• [FILE] trmg.js
• [FILE] txrp.js
• [FILE] xrp.js

Просмотр файла: ltc.js

var Btc = require('./btc');
var bitcoin = require('bitcoinjs-lib');
var _ = require('lodash');

var Ltc = function() {
  // this function is called externally from BaseCoin
  // replace the BaseCoin prototype with the local override prototype, which inherits from BaseCoin
  // effectively, move the BaseCoin prototype one level away
  this.__proto__ = Ltc.prototype;
  this.network = {
    messagePrefix: '\x19Litecoin Signed Message:\n',
    bip32: {
      public: 0x0488b21e,
      private: 0x0488ade4
    },
    pubKeyHash: 0x30,
    scriptHash: 0x32,
    wif: 0xb0,
    dustThreshold: 0, // https://github.com/litecoin-project/litecoin/blob/v0.8.7.2/src/main.cpp#L360-L365
    dustSoftThreshold: 100000, // https://github.com/litecoin-project/litecoin/blob/v0.8.7.2/src/main.h#L53
    feePerKb: 100000 // https://github.com/litecoin-project/litecoin/blob/v0.8.7.2/src/main.cpp#L56
  };
  this.altScriptHash = bitcoin.networks.litecoin.scriptHash;
  // do not support alt destinations in prod
  this.supportAltScriptDestination = false;
};

Ltc.prototype.__proto__ = Btc.prototype;

Ltc.prototype.getChain = function() {
  return 'ltc';
};
Ltc.prototype.getFamily = function() {
  return 'ltc';
};

/**
 * Canonicalize a Litecoin address for a specific scriptHash version
 * @param address
 * @param scriptHashVersion 1 or 2, where 1 is the old version and 2 is the new version
 * @returns {*} address string
 */
Ltc.prototype.canonicalAddress = function(address, scriptHashVersion = 2) {
  if (!this.isValidAddress(address, true)) {
    throw new Error('invalid address');
  }
  const addressDetails = bitcoin.address.fromBase58Check(address);
  if (addressDetails.version === this.network.pubKeyHash) {
    // the pub keys never changed
    return address;
  }

  if ([1, 2].indexOf(scriptHashVersion) === -1) {
    throw new Error('scriptHashVersion needs to be either 1 or 2');
  }
  const scriptHashMap = {
    // altScriptHash is the old one
    1: this.altScriptHash,
    // by default we're using the new one
    2: this.network.scriptHash
  };
  const newScriptHash = scriptHashMap[scriptHashVersion];
  return bitcoin.address.toBase58Check(addressDetails.hash, newScriptHash);
};

module.exports = Ltc;

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