bluzelle-binary-codec/distrib/npm/hashes.js

bluzelle binary codec

'use strict';var makeClass = require('./utils/make-class');var _require =
require('./hash-prefixes'),HashPrefix = _require.HashPrefix;var _require2 =
require('./types'),Hash256 = _require2.Hash256;var _require3 =
require('./utils/bytes-utils'),parseBytes = _require3.parseBytes;
var createHash = require('create-hash');

var Sha512Half = makeClass({
  Sha512Half: function Sha512Half() {
    this.hash = createHash('sha512');
  },
  statics: {
    put: function put(bytes) {
      return new this().put(bytes);
    } },

  put: function put(bytes) {
    this.hash.update(parseBytes(bytes, Buffer));
    return this;
  },
  finish256: function finish256() {
    var bytes = this.hash.digest();
    return bytes.slice(0, 32);
  },
  finish: function finish() {
    return new Hash256(this.finish256());
  } });


function sha512Half() {
  var hash = new Sha512Half();for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {args[_key] = arguments[_key];}
  args.forEach(function (a) {return hash.put(a);});
  return parseBytes(hash.finish256(), Uint8Array);
}

function transactionID(serialized) {
  return new Hash256(sha512Half(HashPrefix.transactionID, serialized));
}

module.exports = {
  Sha512Half: Sha512Half,
  sha512Half: sha512Half,
  transactionID: transactionID };