From 1326f31ab75c803fdd02bccce889c0ba3b307430 Mon Sep 17 00:00:00 2001
From: Ian Gulliver <ian@flamingcow.tv>
Date: Thu, 6 Dec 2018 06:16:36 +0000
Subject: [PATCH] Password strength notes

---
 notes/strength.txt | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 notes/strength.txt

diff --git a/notes/strength.txt b/notes/strength.txt
new file mode 100644
index 0000000..f24b06e
--- /dev/null
+++ b/notes/strength.txt
@@ -0,0 +1,26 @@
+# Gibberish
+# This is our entropy target
+[A-Z][a-z][0-9] * 8
+	26 + 26 + 10 = 62
+	62 ^ 8 = 2.1E14
+
+# Gibberish, visually distinct
+([A-Z][a-z][0-9] - [IOlo01]) * 8
+	26 + 26 + 10 - 6 = 56
+	56 ^ 8 = 9.6E13
+
+# Readable
+5776 words * 4
+	5776 ^ 4 = 1.1E15
+
+# Readable + numbers
+(5776 words * 3) + ([0-9] * 3)
+	(5776 ^ 3) * (10 ^ 3) = 1.9E14
+
+# Readable + visually clear numbers
+(5776 words * 3) + ([0-9] - [01] * 3)
+	(5776 ^ 3) * (8 ^ 3) = 9.8E13
+
+# Pronounceable
+(([BCDFGHJKMNPQRSTVWXYZ] + [AEU]) * 7) + ([0-9] - [01] * 2)
+	((20 * 3) ^ 7) * (8 ^ 2) = 1.7E14