This protects against people who are attacking your app through its public login interface, but when a file containing your hashed passwords gets stolen the thi

This protects against people who are attacking your app through its public login interface, but when a file containing your hashed passwords gets stolen the thieves will attack the passwords directly. http://codahale.com/how-to-safely-store-a-password/ http://codahale.com/how-to-safely-store-a-password/