Skillset can help you prepare! Sign up for your free Skillset account and take the first steps towards your certification.
Which of these attacks describes a known plaintext attack?
The session key is intercepted and used against a later encrypted session
The attacker has obtained a cipher text and plaintext for the past messages which they use to decipher new messages
An attacker intercepts messages between two parties on the network and modifies the original message
An attacker encrypting known plaintext with every possible key to decrypt the corresponding cipher text
The correct response is the cryptanalyst has obtained a cipher text and plaintext for the past messages which they use to decipher new messages. An attacker encrypting known plaintext with every possible key to decrypt the corresponding cipher text (brute force)
The known-plaintext attack (KPA) is an attack model for cryptanalysis where the attacker has access to both the plaintext (called a crib), and its encrypted version (ciphertext). These can be used to reveal further secret information such as secret keys and code books. Known-plaintext attack - Wikipedia https://en.wikipedia.org/wiki/Known-plaintext_attack
Train with Skillset and pass your certification exam. Faster. Guaranteed.
Study thousands of practice questions that organized by skills and ranked by difficulty.
Create a tailored training plan based on the knowledge you already possess.
Know when you’re ready for the high-stakes exam. Have the confidence that you will pass on your first attempt.