Quartz 4

Cryptography

2 min read

Unit 1 – Classical Cryptography (10 hrs)

  1. “Cryptography Is Secret Whispering – A Journey From Ancient Codes to Modern Locks” (History & Overview)

  2. “Caesar Cipher as Musical Chairs for Letters” (Caesar Cipher)

  3. “Vigenère Cipher as a Music Playlist Shuffle – But for Letters” (Vigenère Cipher)

  4. “Rail Fence Cipher: Writing Secrets on a Zigzag Fence” (Rail Fence)

  5. “Columnar Transposition: Shuffling Words Like a Deck of Cards” (Columnar Transposition)

  6. “Frequency Analysis as Detective Work – Spotting the Most Common Suspects (Letters)” (Frequency Analysis)

  7. “Brute Force Attacks: Trying Every Key Like Guessing Your Friend’s Phone Passcode” (Brute Force)

  8. “Algorithms as Secret Recipes – Ingredients, Steps, and Why They Matter” (Intro to Cryptographic Algorithms)

Unit 2 – Modern Cryptography (10 hrs)

  1. “Symmetric Key Cryptography as a Shared Diary With One Key” (DES, 3DES, AES)

  2. “Block Ciphers vs Stream Ciphers: Shipping Data in Containers vs Pipelines” (Modes of Operation)

  3. “Hash Functions Are Digital Fingerprints – MD5, SHA-1, SHA-256” (Hash Functions)

  4. “Message Authentication Codes: Sealing an Envelope With a Wax Stamp” (HMAC)

  5. “Side-Channel Attacks: Reading Secrets by Eavesdropping on the Room” (Side-Channel Attacks)

  6. “Replay Attacks: Digital Time Travel to Fool Systems” (Replay Attacks)

Unit 3 – Public Key Cryptography (10 hrs)

  1. “Public Key Cryptography as Lock-and-Key Pen Pals” (RSA, Diffie-Hellman)

  2. “Digital Signatures as Handwritten Autographs for Data” (RSA Digital Signature, DSA)

  3. “Public Key Infrastructure: A Chain of Trust Like Passports & Embassies” (PKI, Certificates, CAs)

  4. “Key Exchange Protocols as Secret Handshakes in a Crowded Room” (Diffie-Hellman, ECC)

  5. “SSL/TLS and PGP: Digital Bodyguards for Your Data” (SSL/TLS, PGP)

Unit 4 – Cryptographic Protocols & Applications (10 hrs)

  1. “Key Management: Passing the Master Key Without Dropping It” (Key Management Concepts)

  2. “S/MIME and PGP: Sealing Emails Like Confidential Letters” (Secure Email Protocols)

  3. “SSL/TLS and IPsec: Building Encrypted Tunnels for Data” (Secure Communication Protocols)

  4. “Blockchain Cryptography as an Immutable Ledger of Truth” (Cryptography in Blockchain)

  5. “Real-World Cryptography Case Studies – From WhatsApp to Bitcoin” (Case Studies)

  6. “Post-Quantum Cryptography: Future-Proofing Secrets Against Quantum Computers” (Emerging Trends)

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