MATCHING
-a way to prevent keys from being discovered and used to decipher encrypted messages
A)AES
B)block cipher
C)ciphertext
D)cryptanalysis
E)DES
F)XOR function
G)IPsec
H)key management
I)plaintext
J)stream cipher

Question

Quizplus · Accepted Answer

Key management refers to the practices and protocols used for generating, exchanging, and safeguarding encryption keys. By properly managing keys, we can prevent them from being discovered and used maliciously.

Answer: J
 Stream ciphers generate a continuous stream of pseudorandom bits, which are combined with the plaintext to produce ciphertext. Because the stream is unpredictable without knowing the key, it's an effective way to prevent keys from being discovered.

Answer: B
 Block ciphers encrypt data in fixed-size blocks, typically 64 or 128 bits in length. By breaking up the data into blocks, it's more difficult for attackers to discover the keys since they would have to analyze each block individually.

MATCHING -A Way to Prevent Keys from Being Discovered and Used