Cryptographic hash function takes an arbitrary block of data and returns _________
A. fixed size bit string
B. variable size bit string
C. both fixed size bit string and variable size bit string
D. variable sized byte string
Answer:A
Cryptographic hash function takes an arbitrary block of data and returns _________
A. fixed size bit string B. variable size bit string C. both fixed size bit string and variable size bit string D. variable sized byte string
Explanation: Cryptographic hash functions are used in digital signatures and message authentication codes. The only issue with it is that it returns the same hash value every time for a message making it vulnerable to attackers to evaluate and break the cipher.