MCS 150 Cryptanalysis Exam 4
Exam 4: Friday, January 31, 10:30-12:30
This exam is optional.
If you take it, your lowest test score on the four tests will be
discarded.
This will be a closed-book and closed-notes exam.
You may, however, use one
3"-by-5" note card with anything you want written on it
and a calculator.
Cryptanalysis aids, such as tables of characteristic frequencies,
will be provided.
You should be prepared to solve problems of the following kinds.
- Answer questions about the contrast between substitution ciphers
and transposition ciphers.
- Tell about the difference between symmetric and asymmetric ciphers.
- Encipher/decipher/solve columnar transposition ciphers.
- Encipher/decipher simple RSA ciphers.
- Do the modular arithmetic involved in the RSA system.
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