diff --git a/.gitignore b/.gitignore
index ba1d63c..dd94029 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,5 @@
 /tmp
 
 /Gemfile.lock
+
+/coverage
diff --git a/app/models/upload.rb b/app/models/upload.rb
new file mode 100644
index 0000000..648bd26
--- /dev/null
+++ b/app/models/upload.rb
@@ -0,0 +1,17 @@
+class Upload < ActiveRecord::Base
+  attr_accessor :delete_password
+  attr_accessor :download_password
+
+  before_save :encrypt
+
+  validates :filename,     presence: true
+  validates :ext,          presence: true
+  validates :content_type, presence: true
+  validates :data,         presence: true
+
+  private
+
+  def encrypt
+    true
+  end
+end
diff --git a/bin/rspec b/bin/rspec
new file mode 100755
index 0000000..bba8a9e
--- /dev/null
+++ b/bin/rspec
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+exec $(dirname $0)/spring rspec "$@"
diff --git a/bin/spring b/bin/spring
new file mode 100755
index 0000000..ce54348
--- /dev/null
+++ b/bin/spring
@@ -0,0 +1,18 @@
+#!/usr/bin/env ruby
+
+# This is a special way of invoking the spring gem in order to
+# work around the performance issue discussed in
+# https://github.com/rubygems/rubygems/pull/435
+
+glob       = "{#{Gem::Specification.dirs.join(",")}}/spring-*.gemspec"
+candidates = Dir[glob].to_a.sort_by { |c| Gem::Version.new(File.basename(c).split(/[-\.]/)[1...-1].join(".")) }
+
+spec = Gem::Specification.load(candidates.last)
+
+if spec
+  spec.activate
+  load spec.bin_file("spring")
+else
+  $stderr.puts "Could not find spring gem in #{Gem::Specification.dirs.join(", ")}."
+  exit 1
+end
diff --git a/db/migrate/20131011162152_create_uploads.rb b/db/migrate/20131011162152_create_uploads.rb
new file mode 100644
index 0000000..6b6e252
--- /dev/null
+++ b/db/migrate/20131011162152_create_uploads.rb
@@ -0,0 +1,14 @@
+class CreateUploads < ActiveRecord::Migration
+  def change
+    create_table :uploads do |t|
+      t.string :filename,     null: false
+      t.string :ext,          null: false
+      t.string :content_type, null: false
+      t.binary :data,         null: false
+      t.string :download_password_encrypt
+      t.string :delete_password_encrypt
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
new file mode 100644
index 0000000..a915763
--- /dev/null
+++ b/db/schema.rb
@@ -0,0 +1,27 @@
+# encoding: UTF-8
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 20131011162152) do
+
+  create_table "uploads", force: true do |t|
+    t.string   "filename",                  null: false
+    t.string   "ext",                       null: false
+    t.string   "content_type",              null: false
+    t.binary   "data",                      null: false
+    t.string   "download_password_encrypt"
+    t.string   "delete_password_encrypt"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+end
diff --git a/spec/factories/uploads.rb b/spec/factories/uploads.rb
new file mode 100644
index 0000000..9e55b60
--- /dev/null
+++ b/spec/factories/uploads.rb
@@ -0,0 +1,10 @@
+# Read about factories at https://github.com/thoughtbot/factory_girl
+
+FactoryGirl.define do
+  factory :upload do
+    filename     "xx.png"
+    ext          ".png"
+    content_type "image/png"
+    data         "asdf"
+  end
+end
diff --git a/spec/models/upload_spec.rb b/spec/models/upload_spec.rb
new file mode 100644
index 0000000..69beeae
--- /dev/null
+++ b/spec/models/upload_spec.rb
@@ -0,0 +1,21 @@
+require 'spec_helper'
+
+describe Upload do
+  let(:upload) { FactoryGirl.build :upload }
+  describe "validations" do
+    it { should validate_presence_of :filename }
+    it { should validate_presence_of :ext }
+    it { should validate_presence_of :content_type }
+    it { should validate_presence_of :data }
+    context "when parameters is #{FactoryGirl.attributes_for(:upload).to_s}" do
+      it { expect(upload).to be_valid }
+    end
+  end
+
+  describe "#encrypt" do
+    it "should accept encrypt before save" do
+      expect(upload).to receive(:encrypt).and_return(true)
+      upload.save
+    end
+  end
+end