From cda36bfcb3cfb405a43e0a06172a8a8be414d3dd Mon Sep 17 00:00:00 2001
From: nanov <mitko.n@gmail.com>
Date: Wed, 6 Nov 2019 17:16:15 +0200
Subject: [PATCH] wip: implement BigNumber wrapper

---
 lib/BigNumber.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 lib/BigNumber.js

diff --git a/lib/BigNumber.js b/lib/BigNumber.js
new file mode 100644
index 0000000..f53ce28
--- /dev/null
+++ b/lib/BigNumber.js
@@ -0,0 +1,20 @@
+'use strict';
+
+const { jsbn: { BigInteger } } = require('node-forge');
+
+class BigNumber {
+	constructor(value = '') {
+		this._n = new BigInteger(value);
+	}
+
+	toBEBuffer(length = undefined) {
+		const arr = this._n.toByteArray();
+		if (length && arr.length > length)
+			throw new Error('Number out of range.');
+		while (arr.length < length)
+			arr.unshift(0);
+		return Buffer.from(arr);
+	}
+}
+
+module.exports = BigNumber;