Unlocking the Secrets of the Vigenère Cipher 🔐

In this video, we dive into the fascinating world of classical cryptography to explore the Vigenère cipher — once considered unbreakable. We'll uncover how it works, how it's encrypted and decrypted, and why longer keys increase its strength — until clever analysis methods cracked it wide open.

📌 What You’ll Learn:
✅ How the Vigenère cipher encrypts/decrypts messages using a repeating key.
✅ Why longer keys create more secure ciphertext (frequency flattening).
✅ How Kasiski Examination & Index of Coincidence break the cipher — even without the key.
✅ Visual breakdowns of letter frequency distributions and key-based encryption steps.

🎥 Animated with Manim:
Making cryptography clear, visual, and beautiful.
🔗 Manim Community: https://www.manim.community/

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📌 Video Chapters:
0:00 - Introduction
0:26 - Alice & Bob Communication
1:08 - Encryption Process
3:05 - Decryption Process
4:49 - Vigenère Table Encryption
6:10 - Vigenère Table Decryption
6:45 - Security of the Cipher
7:59 - Conclusion

🎵 Background Music: "Calm Evening – Relaxing Neoclassical Piano" (Royalty-Free via Pixabay, used under their Content License).
🔗 Source: [Pixabay Link] | License: [Pixabay License Summary]

🎨 Icons by Flat Icons, juicy_fish, and Smashicons from Flaticon (www.flaticon.com).

🔖 Tags: #vigenere #cryptography #cipher #codebreaking #manim #mathanimation