R3. From a service perspective, what is an important difference between a symmetric-key system and a public-key system?
Posted: Tue Jul 12, 2022 8:06 am
R3. From a service perspective, what is an important difference between a symmetric-key system and a public-key system? RS. Consider an 8-bit block cipher. How many possible input blocks does this cipher have? How many possible mappings are there? if we view each mapping as a key, then how many possible keys does this cipher have? R8. Suppose you want to encrypt the message 10101111 by encrypting the decimal number that corresponds to the message. What is the decimal number?