Python Cryptography: Analyze and Break Ciphers

Learners will analyze classical ciphers, apply Python programming to cryptographic challenges, and evaluate cipher vulnerabilities through hands-on hacking exercises. By the end of the course, they will be able to design cryptographic utilities, demonstrate brute-force and frequency analysis techniques, and solve real cipher challenges using modular arithmetic and Python logic. This intermediate-level course builds directly on Python Hacking fundamentals, guiding learners from coding essentials to practical cipher cracking. Students begin by strengthening programming foundations—creating utilities, handling strings, and managing files—before applying mathematical concepts like the Greatest Common Divisor (GCD) and modular inverses to break multiplicative and affine ciphers. Finally, learners will tackle substitution cipher secrets, leveraging digraphs, trigraphs, and word-pattern analysis. What makes this course unique is its blend of theory and hands-on practice. Instead of abstract explanations, every concept is implemented in Python step by step, ensuring learners gain both practical coding skills and cryptographic insight. With quizzes, graded exercises, and structured modules, this course transforms abstract cryptography into applied problem-solving—ideal for aspiring cybersecurity professionals, ethical hackers, and Python enthusiasts looking to level up their skills

• Implement brute-force and frequency analysis to break ciphers
• Apply modular arithmetic and Python logic in cryptography
• Design and test cryptographic utilities for decryption

• Basic computer and internet skills
• Ability to read course instructions in English and complete short practice activities