Breaking Down the Bit Flipping Attack in AES CBC

How to exploit this type of attack on symmetric ciphers that rely on CBC as a mode of operation

Francesco Pastore
8 min readApr 1, 2024

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Bit-flipping attacks are a common threat to cryptographic algorithms, especially for symmetric ciphers operating in CBC mode.

In these scenarios, knowledge of the plaintext format and the ability to modify the ciphertext allows the attacker to manipulate the encrypted data at will.

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Francesco Pastore

An engineering student in Milan and a web developer for an IT company. Write about programming and cybersecurity topics.