Q. For a 150-bit message and a 10-bit MAC, how many values are the MAC value dependent on?

View solution

Q. Confidentiality can only be provided if we perform message encryption before the MAC generation.

View solution

Q. MACs are also called

View solution

Q. For a 100 bit key and a 32 bit tag, how many possible keys can be produced in the 3rd round?

View solution

Q. MAC is a

View solution

Q. For an n-bit tag and a k-bit key, the level of effort required for brute force attack on a MAC algorithm is

View solution

Q. Cryptographic hash functions execute faster in software than block ciphers.

View solution

Q. What is the value of ipad in the HMAC structure?

View solution

Q. What is the value of opad in the HMAC structure?

View solution

Q. Which cryptographic algorithm is used in CMAC?

View solution

Q. In CMAC, which scenario is a different key K2 is used instead of K1?

View solution

Q. Which Authentication Encryption approach is taken by the SSL/TLS protocol?

View solution

Q. Which Authentication Encryption approach is taken by the IPSec protocol?

View solution

Q. Which Authentication Encryption approach is taken by the SSH protocol?

View solution

Q. Hashing followed by encryption (H→E) is used by which algorithm?

View solution

Q. Which of the following terms is not an input to the CCM encryption?

View solution

Q. How many passes through the plaintext does the CCM require to generate the MAC value?

View solution

Q. In GCM, we define S as S = GHASH(A||0^v||C||0^u||[len(A)]||[len(C)]). What is v defined as?

View solution

Q. When the length of the IV is not 96, then

View solution

Q. Which is not true for Key-Wrapping?

View solution