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A cryptographic attack tries to theoretically and/or practically attack the security properties of a cipher and/or algorithm.

A cryptographic attack tries to theoretically and/or practically attack the security properties of a cipher and/or algorithm.

The ultimate goal of a cryptographic attack is to convert ciphertext into plaintext, yet… every step towards that goal which reduces the security of a cipher can already be called a successful (theoretical) attack.

A capture-the-flag (CTF) contest may invite participants to find a secret text string, or flag, which is hidden in a deliberately vulnerable system.