If Oscar wishes to carry out a brute-force attack on a block cipher with a key length of 99 bits and 50-bits blocks of plaintext-ciphertext, on average Oscar needs to check t- plaintext-ciphertext pairs to eliminate false positives. What is t in this scenario

value of t =  3

Explanation:

Given data :

Key length = 99 bits

50-bits blocks of plaintext-ciphertext

Oscar needs to check  t- plaintext-ciphertext pair

In this scenario The value of  t = 3 and this is because there are

Complexity  encryptions on a full   KTANTAN32 Cipher and also there are  3 plaintext/ciphertext pairs