1. Introduction -- 2. From Julius Caesar to simple substitution -- 3. Polyalphabetic systems -- 4. Jigsaw ciphers -- 5. Two-letter ciphers -- 6. Codes -- 7. Ciphers for spies -- 8. Producing random ...

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A versatile and user-friendly encryption tool that lets you secure your text using a wide range of encryption methods—from basic ciphers to military-grade AES. Ideal for learning, experimenting, and ...