CSS-233: Codes and Ciphers

Yosef Mendelsohn

Syllabus | Resources | Office Hours | Academic Calendar | D2L Login

Topic 1

• Topics Covered: Syllabus and overview of course // Terminology, Modular Arithmetic, Caesar Shift Cipher

• Readings: Paar, Introduction to Cryptography, pages 1-18 (optional)

• Lecture Notes: 01_terminology_shifts_modular.pptx

  • NOTE: To download all files used in this course, be sure to right-click the file and save.

  • IMPORTANT: Please note that I will typically be making changes to the lecture notes right up until the day of lecture. For this reason, please try to download the notes no earlier than the day of lecture each week.

• Assignment: Assignment #1

  • NOTE: I will typically post the assignments only after the second lecture of the week. In other words, they will typically be available late Thursday or early Friday.

Topic 2

• Topics Covered: MASCs (Caesar, Polybius), Language Analysis

• Readings: Bauer: Sections 1.1-1.15

• Lecture Notes: 02_polybius_masc_shifts_holmes.pptx

  • Reminder: Please note that I will typically be making changes to the lecture notes right up until the day of lecture. For this reason, please try to download the notes no earlier than the day of lecture each week.

• Assignment: Assignment #2

  • Reminder: I will typically post the assignments only after the second lecture of the week. In other words, they will typically be available late Thursday or early Friday.

Topic 3

• Topics: Affine Cipher, Coprime Numbers, Nomenclators

• Readings: Bauer: Sections 1.16-1.20

• Lecture Notes: 03_affine_coprime_nomenclators.pptx

• Assignment: Assignment #3

Topic 4

• Topics: Vigenere Cipher, Index of Coincidence, Kasiski Test

• Readings: Bauer: Sections 2.1-2.3, 2.6-2.8, 2.9, 2.11

• Lecture Notes: 04_vigenere_ic_kasiski_otp.pptx

• Assignment: Assignment #4

Topic 5

• Topics: Transposition Ciphers

• Readings: Bauer: Sections 3.1-3.3, 3.5-3.6

• Lecture Notes: 05_transposition.pptx

• Assignment: Assignment #5

Topic 6

• Topics: Binary Ciphers, Playfair Ciphers, Wheel Ciphers

• Readings: Bauer: Sections 4.1-4.5

• Lecture Notes: 06 binary playfair wheel.pptx

• Assignment: Assignment #6

Topic 7

• Topics: ADFGDX Cipher, Yardley and Friedman

• Readings: Bauer: Sections 5.1-5.8

• Lecture Notes: 07_adfgdx_yardley.pptx

• Assignment: Assignment #7

Topic 8

• Topics: Enigma Machine (Shark)

• Readings: Bauer: Sections 7.1-7.7

• Lecture Notes: 08_enigma.pptx