From 58cda9cc7fb79ca9df6746de7f9662bc08dc156a Mon Sep 17 00:00:00 2001
From: Stefan Malzner <stefan@adlk.io>
Date: Fri, 13 Oct 2017 12:29:40 +0200
Subject: initial commit

---
 src/helpers/password-helpers.js | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/helpers/password-helpers.js

(limited to 'src/helpers/password-helpers.js')

diff --git a/src/helpers/password-helpers.js b/src/helpers/password-helpers.js
new file mode 100644
index 000000000..7aacaa4d0
--- /dev/null
+++ b/src/helpers/password-helpers.js
@@ -0,0 +1,36 @@
+import { SHA256 } from 'jshashes';
+
+export function hash(password) {
+  return new SHA256().b64(password);
+}
+
+export function scorePassword(password) {
+  let score = 0;
+  if (!password) {
+    return score;
+  }
+
+  // award every unique letter until 5 repetitions
+  const letters = {};
+  for (let i = 0; i < password.length; i += 1) {
+    letters[password[i]] = (letters[password[i]] || 0) + 1;
+    score += 5.0 / letters[password[i]];
+  }
+
+  // bonus points for mixing it up
+  const variations = {
+    digits: /\d/.test(password),
+    lower: /[a-z]/.test(password),
+    upper: /[A-Z]/.test(password),
+    nonWords: /\W/.test(password),
+  };
+
+  let variationCount = 0;
+  Object.keys(variations).forEach((key) => {
+    variationCount += (variations[key] === true) ? 1 : 0;
+  });
+
+  score += (variationCount - 1) * 10;
+
+  return parseInt(score, 10);
+}
-- 
cgit v1.2.3-70-g09d2