ZuoTi.Pro
Question

Suppose that an oracle offers to solve the Diffie–Hellman problem for you. (See page 67 for...

Suppose that an oracle offers to solve the Diffie–Hellman problem for you. (See page 67 for a description of the Diffie–Hellman problem.) Explain how you can use the oracle to decrypt messages that have been encrypted using the ElGamal public key cryptosystem.

(Page 67 can be found here: https://www.math.brown.edu/~jhs/MathCrypto/SampleSections.pdf)

engineering   Computer-Science   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Answer:

YD Ditte- Hcumn Pobu sSuch as A- ho mod & an d and we headCarcua ee he mod We hee d usshas bohh Valua s A and but hot an d Soa.s an dhtohier Kuy 3 an d iatknu amoun t van 6ty hat oy wen Ja mod & d ana da 9otur an a da agiven by dih b au Pece op tonsge a lo oun the knust ho 7P decrypt He us ng Rushing into andom appeing fexes Ріск s on Vain which ond Se s given by 8 da)as usaア he hm). uw a lb Can Cal cuate ho mod 8) wim oaand b a ana espec vely.

0 0
Add a comment
Know the answer?
Add Answer to:
Suppose that an oracle offers to solve the Diffie–Hellman problem for you. (See page 67 for...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Question1: Alice and Bob use the Diffie–Hellman key exchange technique with a common prime q =...

    Question1: Alice and Bob use the Diffie–Hellman key exchange technique with a common prime q = 1 5 7 and a primitive root a = 5. a. If Alice has a private key XA = 15, find her public key YA. b. If Bob has a private key XB = 27, find his public key YB. c. What is the shared secret key between Alice and Bob? Question2: Alice and Bob use the Diffie-Hellman key exchange technique with a common...

  • In this question, you need to compute the key computed using the Diffie Hellman key exchanged...

    In this question, you need to compute the key computed using the Diffie Hellman key exchanged process. Suppose the prime is 31 and the primitive root is 3. Find the public   keys when the two parties choose 7 and 9 as their private keys. Next find the shared Key computed by both parties. HINT: Once you know how to the formula works, it is very   easy to simply use Excel to look for the public keys and to calculate K....

  • The Diffie-Hellman public-key encryption algorithm is an alternative key exchange algorithm that is used by protocols...

    The Diffie-Hellman public-key encryption algorithm is an alternative key exchange algorithm that is used by protocols such as IPSec for communicating parties to agree on a shared key. The DH algorithm makes use of a large prime number p and another large number, g that is less than p. Both p and g are made public (so that an attacker would know them). In DH, Alice and Bob each independently choose secret keys, ?? and ??, respectively. Alice then computes...

  • 8.17. Considering the four examples from Problem 8.13, we see that the Elgamal scheme is nondeterministic:...

    8.17. Considering the four examples from Problem 8.13, we see that the Elgamal scheme is nondeterministic: A given plaintext x has many valid ciphertexts, e.g., both x=33 and x=248 have the same ciphertext in the problem above. 1. Why is the Elgamal signature scheme nondeterministic? 2. How many valid ciphertexts exist for each message x (general expression)? How many are there for the system in Problem 8.13 (numerical answer)? 3. IstheRSA crypto systemnondeterministic once the public key has been chosen?...

  • Suppose that you are asked to solve the following problem: Chadwick is pushing a piano across...

    Suppose that you are asked to solve the following problem: Chadwick is pushing a piano across a level floor (see the figure). (Figure 1) The piano can slide across the floor without friction. If Chadwick applies a horizontal force to the piano, what is the piano's acceleration? To solve this problem you should start by drawing a free-body diagram. Determine the object of interest for the situation described. (options: The floor, Chadwick, or the piano)

  • can someone show me how to do this problem? Thank you @ See page 126 04...

    can someone show me how to do this problem? Thank you @ See page 126 04 Question (2 points) A local pizzeria sells 500 large pepperoni pizzas per week at a price of $20 each. Suppose the owner of the pizzeria tells you that the price elasticity of demand for his pizza is -2, and he asks you for advice. He wants to know two things. First, how many pizzas will he sell if he cuts his price by 10%?...

  • C++ Code

    "For two thousand years, codemakers have fought to preserve secrets while codebreakers have tried their best to reveal them." - taken from Code Book, The Evolution of Secrecy from Mary, Queen of Scots to Quantum Cryptography by Simon Singh.The idea for this machine problem came from this book.You will encrypt and decrypt some messages using a simplified version of a code in the book. The convention in cryptography is to write the plain text in lower case letters and the encrypted text in upper case...

  • Please solve Question B fully, Thank you! Custom problem B involves data analysis on a sample...

    Please solve Question B fully, Thank you! Custom problem B involves data analysis on a sample of size 30, which is best done using data analysis software. You are encouraged to use MATLAB, which can be found on all Windows computers in all ACCC computer labs on campus (see a full list here: https:laccc.uic edu/lablall). You can also download a student version for FREE here: https://webstore.illinois.edu/shop/product.aspx?zpid 3427 Another option is to use OctaveOnline (https:loctave-online.net), which uses the same syntax and...

  • 3) Out of the following, name which kind of attack you carried out in part 1...

    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...

  • JAVA Problem: With the recent news about data breaches and different organizations having their clients’ information...

    JAVA Problem: With the recent news about data breaches and different organizations having their clients’ information being exposed, it is becoming more and more important to find ways to protect our sensitive data. In this program we will develop a simple tool that helps users generate strong passwords, encrypt and decrypt data using some cyphering techniques. You will need to create two classes. The first class is your driver for the application and contains the main method. Name this class...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT