Introduction to ciphers and substitution. Alice and Bob and Carl and Julius: terminology and Caesar Cipher ; The key to the matter: generalizing the Caesar Cipher ; Multiplicative ciphers ; Affine ...

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 ...

"One of the weapons originating from the Two Fingers. A formless sequence of ciphers comprise its blade, and as such no shield can repel it. Deals holy damage. The furtive inscription appears to hang ...

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 ...