(4) Elgamal public key cryptosystem (encryption): Start with the prime p = 29 and the primitive root g = 2. (a) Alice sends Bob the public key A = 12. Bob wants to send the message m₁ = 13 to Alice. Bob chooses the random element k = 3. Using the Elgamal public key cryptosystem, compute the pair of num- bers (C1, C₂) that Bob sends to Alice. Note: Do not work out how Alice computes the plaintext message m₁ from the ciphertext (C₁, C₂). (b) Bob encrypts another message m2 and sends the pair of numbers (12, 19) to Alice. Alice's secret key is a = 7. Using Elgamal public key decryption, Alice computes the plaintext message m₂ from the ciphertext (8,2). What is the number m2 that Alice obtains?

(4) Elgamal public key cryptosystem (encryption): Start with the prime p = 29 and the primitive root g = 2. (a) Alice sends Bob the public key A = 12. Bob wants to send the message m₁ = 13 to Alice. Bob chooses the random element k = 3. Using the Elgamal public key cryptosystem, compute the pair of num- bers (C1, C₂) that Bob sends to Alice. Note: Do not work out how Alice computes the plaintext message m₁ from the ciphertext (C₁, C₂). (b) Bob encrypts another message m2 and sends the pair of numbers (12, 19) to Alice. Alice's secret key is a = 7. Using Elgamal public key decryption, Alice computes the plaintext message m₂ from the ciphertext (8,2). What is the number m2 that Alice obtains?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Q 4- According to Mill's intersecting algorithm, explain which clocks should be discarded and what is the average time (You may draw your solution on a paper.). Cs 1.24 C7 C6 1.00 1.40 C2 1.25 1.05 C3 1.10 C4 1.17
a- Apply A* algorithm to find the path from M to R. 1 12 B 30) A C (30 8 5 30 3 з (25) 4 21 R (0) 2 D. 5 40 E (2)
Is b correct? It's calculated differently than a. The paths from a to d should be C(9,4) or C(9,5).
Suppose you and your friend would like to use Diffie-Hellman key exchange system to exchange a keyword. Both of you have decided to use the following p = 4138327577, q = 3742197127.If you decide b = 1767005, and your friend has picked a number a that you don’t know. But you havereceived q a mod p from your friend, and the number is 980246808. Find out the common shared key.
For the following NFA M. 1 start 90 qi q2 From the list below, select all computations of M on the string 100. O go → go q1 → 92 92 qo → qo → q1 → q1 q0 → q0 → qi → q1 → q2
Recall that a bit string is a string of Os and 1s Describe the following sequence recursively. Include initial conditions and assume that the sequences begin with a₁. a₁ is the number of ways to go down an n-step staircase if you go down 1, 2, or 3 steps at a time.
Diffie-Hellman Key exchange is based on the difficulty of solving the Discrete Logarithm Problem. For instance, Alice and Bob agree on a prime number p=7 and a number (base) g=4. This is the public aspect of the system. Using this algorithm, find the kprivate.
Correct answer will be upvoted else Multiple Downvoted. Computer science. You are remaining on the OX-hub at point 0 and you need to move to an integer point x>0. You can take a few leaps. Assume you're at present at point (y might be negative) and hop for the k-th time. You can: either leap to the point y+k or on the other hand leap to the point y−1. What is the base number of hops you want to arrive at the point x? Input The main line contains a solitary integer t (1≤t≤1000) — the number of experiments. The solitary line of each experiment contains the single integer x (1≤x≤106) — the objective point. Output For each experiment, print the single integer — the base number of leaps to arrive at x. It very well may be demonstrated that we can arrive at any integer point x.
Question: Draw the deterministic finite state machine for all binary strings divisible by 5 .
the shortest path from S to C indeed has distance 7, and this path is S -> E -> D -> A -> C.
Let U=(2,-1,0,-3) ,V=(1,-1,-1,3) and W=(1,3,-2,2) then U.V is: * -6 6. O skip 4
Q5