Course: CSE3230 Edition: 2020-2021

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One can enroll until Mon, Jun 28, 2021 12:00:00
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Latest Announcements

#### Resit Exam - S-box Construction question

For the S-box question, you can get values that are not defined (like $$\frac{1}{0}$$). In such cases, you are free to select any value for that specific S-box output.

at Mon, Jun 28, 2021 10:58:45 updated at Mon, Jun 28, 2021 10:59:16

#### Resit Exam - SageMath question

In one group, for question 2b, here is the correction:

Define the field extension $$F_{2^5}$$ over $$F_2$$ using the primitive polynomial. Find the additive and the multiplicative representations for the elements of $$F_{2^5}$$. (3 points)

at Mon, Jun 28, 2021 10:51:16

#### Resit Exam - S-box Construction question

Please consider $$F(0) = 0$$ for $$x=0$$.

at Mon, Jun 28, 2021 10:30:57

#### Resit Exam - Boolean Function Construction question

The value for the exponent $$d$$ is not defined by the assignment, you can freely select the value, but it must be different from 1.

at Mon, Jun 28, 2021 09:37:05

#### Resit Exam - Typo fixed in Proof question

The initial version of the proof question contained a small typo in the definition of f, being $$f(x_1,\cdots,x_{n+1}) = g(x_1,\cdots,x_n) \oplus x_n$$ instead of $$f(x_1,\cdots,x_{n+1}) = g(x_1,\cdots,x_n) \oplus x_{n+1}$$. The typo has now been fixed.

at Mon, Jun 28, 2021 09:16:27

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