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TrainedMonkey

Both coursera and udacity have amazing courses on crypto.

Udacity: https://www.udacity.com/course/cs387

Coursera crypto I: https://www.coursera.org/course/crypto

Coursera crypto II: https://www.coursera.org/course/crypto2

I took coursera crypto I myself. It was a lot of work, but I learned a ton.

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Good luck trying to take Coursera's Crypto II: I've been signed up since August 2012, and every 3-6 months it has been delayed another 3-6 months. At this point I'm no longer expecting it to be offered.

Crypto I is not vaporware and is excellent.

I have hopes for Crypto II. Based on Crypto I, Boneh likes to do a good job with the course and being who he is, he's probably just incredibly busy (the original Crypto I itself had two minor delays in the middle of the class), so it keeps getting postponed. I wouldn't be surprised to see it materialize eventually.

Makes you wonder why aren't online classes kept, at least a year or something, in case the information is out of date (for technology)?

Udacity has a model in which every class is self paced and they have not deleted a single one since uploading them.

This is my favorite feature that Udacity has and the others don't.

That's because the staff needs a schedule similar to the academic schedule so they can answer questions, correct things, participate in the forum discussions...

Crypto I has been offered several times though (at least 4 or 5). If you ever signed up for one of the offerings, you can still access to the full course (videos, lectures, and I think even the automated grader) as well as the forums (but the forum activity usually fades down after the end of the course).

It's not because of some practical reasons, just university policies.

I'm not sure what you're saying. As far as I know, Crypto II has never been offered, so the problem is probably that they haven't developed any course material for it.

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