Engineering, 06.03.2020 23:54 webbjalia04

Suppose a random cryptosystem is obtained as follows. The message consists of two independent random variables X, Y both generated by spinning a wheel with arcs labeled 0 and 1, both of lengthes 1/2. Let there be four equiprobalbe keys with the following corresponding encrypting transformations:

K1: (X1, X2) --- > (X1, X2) k2: (X1, X2) --- > (X2, X1) k3: (X1, X2) --- > (X1, (X1+X2) mod 2) k4: (X1, X2) --- > ((X1+X2) mod 2, X1)

Calculate the entropy of the cyphertext.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, yasminothman02

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Answers: 3

continue

Engineering, 04.07.2019 18:10, 19deleonl

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Answers: 2

continue

Engineering, 04.07.2019 18:10, sarahgrindstaff123

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

Answers: 2

continue

Engineering, 04.07.2019 18:10, johnthienann58

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

Answers: 2

continue

You know the right answer?

Suppose a random cryptosystem is obtained as follows. The message consists of two independent random...