You are creating a new encrypted partition on /dev/nvme0n1p3 with the command:
cryptsetup luksFormat /dev/nvme0n1p3
The security policy states that the key-derivation function must be the memory-hard Argon2id algorithm rather than the default PBKDF2. Which single additional option must you pass to cryptsetup to meet this requirement?
cryptsetup selects the Password-Based Key Derivation Function (PBKDF) with the --pbkdf option. Supplying argon2id to that parameter instructs cryptsetup to store the passphrase using the memory-hard Argon2id algorithm, which greatly increases the cost of offline brute-force attacks. The other options shown do not change the PBKDF: --hash only specifies the hash used inside PBKDF2, --kdf is not a valid cryptsetup option, and --type selects the LUKS header version (luks1 or luks2) but leaves the PBKDF unchanged.
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What is a key-derivation function (KDF) in cryptography?
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Why is Argon2id considered more secure than PBKDF2?
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What is the role of the `--pbkdf` option in the cryptsetup command?
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CompTIA Linux+ XK0-006 (V8)
Security
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