1 files changed, 36 insertions, 0 deletions

diff --git a/src/helpers/password-helpers.ts b/src/helpers/password-helpers.ts
new file mode 100644
index 000000000..89c75c752
--- /dev/null
+++ b/src/helpers/password-helpers.ts
@@ -0,0 +1,36 @@
+import crypto from 'crypto';
+
+export function hash(password: crypto.BinaryLike) {
+  return crypto.createHash('sha256').update(password).digest('base64');
+}
+
+export function scorePassword(password: string) {
+  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.toString(), 10);
+}