Add dice words

README.md

@@ -10,3 +10,11 @@
 - [ ] Destroy data after access
 - [ ] Destroy data after expiry
 
+
+# FAQ
+
+## Passwords & Security
+
+To generate one-time-passwords the app utilizes the [Diceware method](https://std.com/~reinhold/diceware.html) with a slightly modifed Diceword list as provided by the [passphrase gem](https://github.com/esumbar/passphrase).
+
+See also [cryptographic safety](https://blog.1password.com/1password-hashcat-strong-master-passwords/), [diceware at 1password](https://blog.1password.com/toward-better-master-passwords)

app/models/dice_word.rb

@@ -0,0 +1,25 @@
+# == Schema Information
+#
+# Table name: dice_words
+#
+#  id         :integer          not null, primary key
+#  words      :string
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+class DiceWord < ApplicationRecord
+  def readonly?
+    true
+  end
+
+  class << self
+    def generate_password
+      ids = (1..4).map { (1..5).map { rand(1..6) }.join.to_i }
+      DiceWord
+        .find(*ids)
+        .map(&:words)
+        .map { |w| w.split(' ') }
+        .map { |t| t[rand(0..t.length - 1)] }.flatten.join('-')
+    end
+  end
+end

db/migrate/20231212173231_create_dice_words.rb

@@ -0,0 +1,9 @@
+class CreateDiceWords < ActiveRecord::Migration[7.1]
+  def change
+    create_table :dice_words do |t|
+      t.string :words
+
+      t.timestamps
+    end
+  end
+end