Rolling Your Own Crypto
Forget about creating your own crypto. I have had endless troubles just <i>using</i> crypto. Obscure options that aren't explained. Examples that don't actually work.<p>C# had an option that I finally got to work but the documentation specifically said not to use it; but the other choices didn't work.<p>I had to encrypt something in PHP then decrypt it in ColdFusion. Despite being the same algorithm, key, etc, it didn't work. Strangely, the exact same data in the other direction (CF->PHP) worked just fine.<p>I'd just like the libraries I use to have a simple choice: Encrypt(data,key) and Decrypt(data,key) and be done.