Discover the fascinating world of classical cryptography with this comprehensive educational app featuring 12 historically significant ciphers. Key Features: - 12 Classical Ciphers: Caesar, Vigenère, Hill, Atbash, Pigpen, ROT13/47, Rail Fence, Bacon, Transposition, Affine, and Simple Substitution - Real-time Encryption & Decryption with intuitive interface - Historical Context for each cipher with educational background - Interactive Learning with parameter guidance and visual feedback Perfect for: - Students studying cryptography and computer science - History enthusiasts interested in secret communications - Teachers demonstrating encryption concepts - Anyone curious about how messages were protected throughout history