Cryptography, Basic Computer Science

Assignment Help:
Assume |s1|=|s2|=n and consider the functions defined, for any s1 and s2, as:
(a) G1(s1,s2)=s1 xor s2, (b) G2(s1,s2)=(s1, s2, s1 xor s2).
We have that:

A.
G1 and G2 are pseudo-random generators because their outputs are uniformly (and thus, pseudo-randomly) distributed if so are their input

B.
G1 and G2 are not pseudo-random generators because either their outputs are not longer than their inputs or there exists a statistical test that distinguishes their outputs from a random string of the same length

C.
G1 and G2 are not pseudo-random generators because either there exists an efficient algorithm that can compute their input from their output or their outputs are not longer than their inputs

D.
G1 and G2 can be proved to be pseudo-random generators using a proof by reduction

Related Discussions:- Cryptography

Socket, socket programming

socket programming

What is atm cell, Header contains routing and error control information Pay...

Header contains routing and error control information Payload carries the actual user information, either voice, data or video

Hangman, Aim This assignment is intended to assess your skills in understan...

Aim This assignment is intended to assess your skills in understanding and interpreting a moderately complex problem, designing a solution to the problem and implementing the desig

Data Type Conversion, Sometimes you may drop to perform conversions among t...

Sometimes you may drop to perform conversions among the built-in types. To translate between types you just use the type name as a function. There are quite a few built-in function

ICT IN BUSINESS, Explain how ICT can be used for achievement of each of the...

Explain how ICT can be used for achievement of each of the following business objectives, illustrating your answer with examples: 1. Customer intimacy 2. Low-cost leadership

Programming Project 1, Programming Project You will implement 2 algorithms...

Programming Project You will implement 2 algorithms to solve the single source shortest paths problem, Bellman-Ford Algorithm and Dijkstra''s algorithm Allowed programming languag

Cost of computer, If you have to consider the installation of communication...

If you have to consider the installation of communications packages, the same questions have to be asked. (a) Does the software and the modem support the necessary transmission

Explain data movement ?, In any program it is essential to move the data in...

In any program it is essential to move the data in the memory and in the CPU registers; there are a number of ways to do this: it can copy data in the memory to a number of registe

Represent the user interface, Question: CarRide.com is the web portal t...

Question: CarRide.com is the web portal to CarRide Ltd; a car rental company that makes full use of technological advances to make sure you enjoy the ride with your rental car.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd