diff --git a/lib/Decrypt.js b/lib/Decrypt.js
index 0bbe5ae..2c50a7b 100644
--- a/lib/Decrypt.js
+++ b/lib/Decrypt.js
@@ -1,160 +1,94 @@
-const Int64 = require('node-int64');
-
-let Stream = require('stream');
-
+const Int64 = require("node-int64");
+let Stream = require("stream");
 
 // Backwards compatibility for node versions < 8
 
 if (!Stream.Writable || !Stream.Writable.prototype.destroy)
-
-  Stream = require('readable-stream');
-
+  Stream = require("readable-stream");
 
 let table;
 
-
 function generateTable() {
-
   const poly = 0xEDB88320;
   let c, n, k;
-
   table = [];
-
   for (n = 0; n < 256; n++) {
-
     c = n;
-
-    for (k = 0; k < 8; k++)
-
-      c = (c & 1) ? poly ^ (c >>> 1) : c = c >>> 1;
-
+    for (k = 0; k < 8; k++) c = c & 1 ? poly ^ (c >>> 1) : (c = c >>> 1);
     table[n] = c >>> 0;
-
   }
-
 }
 
-
 function crc(ch, crc) {
+  if (!table) generateTable();
 
-  if (!table)
-
-    generateTable();
-
-
-  if (ch.charCodeAt)
-
-    ch = ch.charCodeAt(0);
-
+  if (ch.charCodeAt) ch = ch.charCodeAt(0);
 
   const l = (crc.readUInt32BE() >> 8) & 0xffffff;
-
   const r = table[(crc.readUInt32BE() ^ (ch >>> 0)) & 0xff];
 
-
   return (l ^ r) >>> 0;
-
 }
 
-
 function multiply(a, b) {
-
   const ah = (a >> 16) & 0xffff;
-
   const al = a & 0xffff;
-
   const bh = (b >> 16) & 0xffff;
-
   const bl = b & 0xffff;
-
   const high = (ah * bl + al * bh) & 0xffff;
 
   return ((high << 16) >>> 0) + al * bl;
-
-};
-
+}
 
 function Decrypt() {
-
-  if (!(this instanceof Decrypt))
-
-    return new Decrypt();
-
+  if (!(this instanceof Decrypt)) return new Decrypt();
 
   this.key0 = Buffer.allocUnsafe(4);
-
   this.key1 = Buffer.allocUnsafe(4);
-
   this.key2 = Buffer.allocUnsafe(4);
 
-
   this.key0.writeUInt32BE(0x12345678, 0);
-
   this.key1.writeUInt32BE(0x23456789, 0);
-
   this.key2.writeUInt32BE(0x34567890, 0);
-
 }
 
-
-Decrypt.prototype.update = function(h) {
-
+Decrypt.prototype.update = function (h) {
   this.key0.writeUInt32BE(crc(h, this.key0));
-
-  this.key1.writeUInt32BE(((this.key0.readUInt32BE() & 0xff & 0xFFFFFFFF) + this.key1.readUInt32BE()) >>> 0);
-
-
-  const x = new Int64((multiply(this.key1.readUInt32BE(), 134775813) + 1) & 0xFFFFFFFF);
-
+  this.key1.writeUInt32BE(
+    ((this.key0.readUInt32BE() & 0xff & 0xFFFFFFFF) +
+      this.key1.readUInt32BE()) >>> 0
+  );
+  const x = new Int64(
+    (multiply(this.key1.readUInt32BE(), 134775813) + 1) & 0xFFFFFFFF
+  );
   const b = Buffer.alloc(8);
-
   x.copy(b, 0);
-
   b.copy(this.key1, 0, 4, 8);
-
-
-  this.key2.writeUInt32BE(crc(((this.key1.readUInt32BE() >> 24) & 0xff) >>> 0, this.key2));
-
+  this.key2.writeUInt32BE(
+    crc(((this.key1.readUInt32BE() >> 24) & 0xff) >>> 0, this.key2)
+  );
 };
 
-
-Decrypt.prototype.decryptByte = function(c) {
-
+Decrypt.prototype.decryptByte = function (c) {
   const k = (this.key2.readUInt32BE() | 2) >>> 0;
-
-  c = c ^ ((multiply(k, (k^1 >>> 0)) >> 8) & 0xff);
-
+  c = c ^ ((multiply(k, (k ^ 1 >>> 0)) >> 8) & 0xff);
   this.update(c);
 
   return c;
-
 };
 
-
-Decrypt.prototype.stream = function() {
-
+Decrypt.prototype.stream = function () {
   const stream = Stream.Transform(),
-
     self = this;
-
-
-  stream._transform = function(d, e, cb) {
-
-    for (let i = 0; i<d.length; i++) {
-
+  stream._transform = function (d, e, cb) {
+    for (let i = 0; i < d.length; i++) {
       d[i] = self.decryptByte(d[i]);
-
     }
-
     this.push(d);
-
     cb();
-
   };
 
   return stream;
-
 };
 
-
 module.exports = Decrypt;
\ No newline at end of file
diff --git a/package.json b/package.json
index 181b8e6..656d9e3 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,6 @@
   },
   "license": "MIT",
   "dependencies": {
-    "big-integer": "^1.6.17",
     "bluebird": "~3.4.1",
     "duplexer2": "~0.1.4",
     "fstream": "^1.0.12",