3. (10 points) You see that someone’s RSA public key is (23,56153). You figure out how to factor 56153 into 233 and 241. Knowing this, tell me what that person’s public key is (if it actually exists). If there exists no valid private RSA key for this, then justify why that is the case.
Given public key
e=23
n=56153
Valid public key GCD(phy(n),e)=1
n=56153=233*241
Phi(n)=232*240=55680
gcd(23,56153)=1 so public key e is valid
Private key (d)
d*e mod phi(n)=1
23*d mod 55680=1
d=19367
3. (10 points) You see that someone’s RSA public key is (23,56153). You figure out how...
just need help with part c
key and public key cryptography methods 2. (a) Explain the difference between the symmetric (b) In the famou s RSA algorithm for public key cryptography, very large prime numbers are used so as to make ult for the attackers to find from their product the prime factors. However, for an illustration of the ideas behind the RSA algorithm, you could chooses two small prime numbers 7 and 11, and a public key e 13...
5.6 Exercise. Describe an RSA Public Key Code System based on the primes and 17. Encode and decode several messages Of coursc, the fun of being a spy is to break codes. So get on your trench coal, pull out your magnifying glass, and begin to spy. The next exercise asks you to break an RSA code and save the world 5.7 Excrcise. You are a secret agent. An evil spy with shallow mumber thery skills uses the RSA Public...
o-8. (15 points) Bob's simple toy RSA eryptosystem has public key kyub(n, e) (65,5), where n =p,-5x13-65 and e-5. I. Describe the key pair generation procedure for Bob to generate his private key kor- d. With the above given parameters, use EEA to calculate d 2. Describe RSA encryption procedure that Alice uses to encrypt her plaintext message x to its above given parameters, what will be y? ciphertext y before sending the message to Bob. Suppose Alice's message x-...
Write code for RSA encryption package rsa; import java.util.ArrayList; import java.util.Random; import java.util.Scanner; public class RSA { private BigInteger phi; private BigInteger e; private BigInteger d; private BigInteger num; public static void main(String[] args) { Scanner keyboard = new Scanner(System.in); System.out.println("Enter the message you would like to encode, using any ASCII characters: "); String input = keyboard.nextLine(); int[] ASCIIvalues = new int[input.length()]; for (int i = 0; i < input.length(); i++) { ASCIIvalues[i] = input.charAt(i); } String ASCIInumbers...
Suppose we use p = 7 and q = 5 to generate keys for RSA. a) What is n ? ___________________ b) What is φ(n) ? _______________________ c) One choice of e is 5. What are the other choices for e? _________________________________________________________________________________ d) Explain how you got your answer for part c. e) For the choice of e = 5 what is d? _________________________ Show work. f) Using the public key (n, e), what is the message 3 encrypted as?...
3) Out of the following, name which kind of attack you carried out in part 1 and part2: a. ciphertext only, b. known plaintext, c. chosen plaintext, d. chosen ciphertext. Explain your answer Problem 3 10 points] A 4-bit long message was encrypted using one-time pad to yield a cipher-text “1010” Assuming the message space consists of all 4-bit long messages, what is the probability that the corresponding plaintext was “1001”? Explain your answer. Problem 4 Assume we perform a...
need to see how you got to the answer
6) 25 Points You are considering a new prod uct launch, The project will cost $982.000, have a four-year life, and have no salvage value. The depreciation is straight-line to zero. Sales are projected at 300 units per year. The pnce per unit is $19,200, the variable cost per unit is $15.700. and fixed costs are $328,000 per year. The required return on the project is 12 %, and the relevant...
This is used as C++
How do I even figure this out at all? Please help me solve
this tough question
Question 30 10 pts (SHORT ANSWER) Write three separate if blocks to check the following THREE conditions (number your answers): 1. If the number variable testScore is outside the range of 0 through 100 (excluding both those scores), print the message: "INVALID: OUTSIDE RANGE 0-100" 2. If the number variable bonusPoints is inside the range 1 through 10 (including...
Correct Answer is provided. I just can't figure out how to get
there.
Question 2 0 out of 10 points A market value weighted index has three stocks in it, call them A, B, and C, priced at 88, 94, and 41 per share. Each firm has 324, 206 and 148 thousand shares outstanding, respectively. The value of the index at close of x trading day is 763. At this time, the index decides to remove stock C from the...
CAN YOU PLEASE EXPLAIN IN TASK 3 - HOW DO WE REPRESENT
TOTAL PARTICIPATION AND KEY CONSTRAINTS IN SQL CODE. PLEASE PROVIDE
SOLUTION AND DETAILED EXPLANATION.
I WOULD REALLY APPRECIATE IF YOU CAN HELP ME WITH THE
ABOVE 2 QUESTIONS.
I WILL DEFINITELY RATE!!
Thank you.
Task 2 [40 points Given an ER diagram (as shown below), write SQL statements to create the corresponding relations and capture as many of the constraints as possible. If you cannot capture some constraints,...