The Line of Code That Makes Every Encryption Unique — Even With the Same Password
Same message. Same password. Same key. Two completely different ciphertexts. That's not a bug — it's a requirement, and it comes down to a single value that's easy to overlook: the nonce. This is the final post in a series documenting what I'm learning building CryptoGraphy. If the same plaintext always produced the same ciphertext under a given key, an attacker watching encrypted traffic could spot patterns without ever breaking the encryption itself. "This exact ciphertext shows up every time…