This post does not go at all into the "why" of authenticated encryption. If you're interested in more of the reasons for authenticating, including actual attac

This post does not go at all into the "why" of authenticated encryption. If you're interested in more of the reasons for authenticating, including actual attacks it protects against, I found http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html http://blog.cryptographyengineering.com/2012/05/how-to-choos... to be a good explanation of this.