Cryptography

Block cipher modes

Chapter 6 of 10 · Cryptography 60%

🐧 'It's AES-256, it's safe.' Then the encrypted file shows the same block repeating and the penguin's outline appears. Can you spot the broken mode?

AES the algorithm can be unbreakable while the mode leaks everything. In 2013 around 150 million Adobe passwords fell to ECB plus plaintext hints. Learn to spot repeating blocks, bit-flip CBC, and pick the mode that holds. 🔑

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