I didn’t fully understand the point of this exercise, other than being a slightly gentler introduction as to how CTR works/can be misused compared to the next challenge.

This standard specifies the Rijndael algorithm ([3] and [4]), a symmetric block cipher that can process data blocks of 128 bits, using cipher keys with lengths of 128, 192, and 256 bits. Rijndael was designed to handle additional block sizes and key lengths, however they are not adopted in this standard. Throughout the remainder of this standard, the algorithm specified herein will be referred to as “the AES algorithm.” The algorithm may be used with the three different key lengths indicated above, and therefore these different “flavors” may be referred to as “AES-128”, “AES-192”, and “AES-256”.

Open Source[edit] LightSide[43] EASE[44] - Published by EdX.

Alternatively, Daphne Koller and Andrew Ng who are the founders of Coursera, a Stanford MOOC startup, have decided to use peer evaluation to assess writing. Koller and Ng (2012) specifically used the term “calibrated peer review” to refer to a method of peer review distinct from an application developed by UCLA with National Science Foundation funding called Calibrated Peer Review™ (CPR). For Koller and Ng, “calibrated peer review” is a specific form of peer review in which students are trained on a particular scoring rubric for an assignment using practice essays before they begin the peer review process.