Python Case Study - Cryptography

Learn how to apply and analyze cryptographic systems using Python through practical, case-based implementation. This course guides you from foundational cryptography concepts and simple reverse and Caesar ciphers to brute force attacks, transposition ciphers, and classical multiplicative and affine encryption. You’ll develop Python programs for encryption and decryption, automate English detection, apply modular arithmetic, generate cipher keys, and examine how attackers exploit patterns and weaknesses. You’ll also implement substitution, Vernam, and Vigenère ciphers while evaluating their cryptographic strength and susceptibility to cryptanalysis. The course then introduces modern cryptography, including Base64 encoding, hashing algorithms, cryptographic libraries, and RSA public-key cryptography. You’ll distinguish encoding from encryption, apply hashing for data security, and construct and validate RSA key pairs for secure message exchange. Designed for learners interested in Python programming, cryptography, and secure communication, this course uniquely connects cryptographic theory with hands-on case studies. By the end, you’ll be able to build encryption and decryption tools, analyze cipher vulnerabilities, compare classical and modern techniques, and implement cryptographic methods in Python. Enroll to develop practical skills in designing, testing, and evaluating secure communication systems.