Hey tptacek, I'm CTO at a young zero knowledge email startup, and while I'm a proficient crypto user, I'd like to learn more about security and cryptography in general. Do you have any tips for me? Thanks!
Another problem is that every time we've talked about posting solutions, people have asked us to hold off.
Finally, a quick jab: thousands and thousands of people completed several sets of these challenges --- more than a thousand got through the CBC padding oracle, which (in our challenge) is cryptographically more complicated than the TLS POODLE attack. None of them had solutions. You don't need them either. :)
https://www.coursera.org/course/cryptoWhile coursera focuses on theory, it is a bit more practical. I'd say they complement each other nicely.