Begin rewrite.
Improve padding checks.
Add new version of chat example
Switch to XSalsa20 in chat app
Add salsa20 example.
Move secretbox outside ch2
Add predictable challener.
Add reflector (CCA for chat program).
Start padding oracle demo.
Cleaning up oracle.
More robust padding
Add more padding tests.
Finish padding oracle attack.
Merge pull request #1 from kisom/master

Changes form master