working on encryption

db/migrate/20131113200708_create_key_managements.rb

@@ -0,0 +1,10 @@
+class CreateKeyManagements < ActiveRecord::Migration
+  def change
+    create_table :key_managements do |t|
+      t.string :iv
+      t.integer :user_id
+
+      t.timestamps
+    end
+  end
+end