Intermediate
Cybersecurity & Cryptography
Q74 / 100
What is the role of a key derivation function (KDF) such as PBKDF2 or Argon2?
Correct! Well done.
Incorrect.
The correct answer is B) Deriving one or more cryptographic keys from a password or master secret using a deliberately slow, configurable algorithm to resist brute-force and hardware-accelerated attacks
B
Correct Answer
Deriving one or more cryptographic keys from a password or master secret using a deliberately slow, configurable algorithm to resist brute-force and hardware-accelerated attacks
Explanation
KDFs apply many iterations (and, for Argon2, memory-hard computation) to slow down attackers performing offline guessing, especially with GPUs or ASICs. They are essential for securely storing passwords and deriving encryption keys from passphrases.
Progress
74/100