Logo
Home Study Material Contact Search
AI Chat FREE
  1. computer science
  2. programming
  3. - you (eve) have intercepted two ciphertexts: c1 =

- You (Eve) have intercepted two ciphertexts: c1 = 1111100101111001110011000001011110000110 c2 = 1111101001100111110111010000100110001000 You know that both are...

Free

70.2K

Verified Solution

Question

Programming

- You (Eve) have intercepted two ciphertexts: c1 =1111100101111001110011000001011110000110

c2 = 1111101001100111110111010000100110001000

You know that both are OTP ciphertexts, encrypted with the samekey. You know that either c1 is an encryption of alpha and c2 is anencryption of bravo or c1 is an encryption
of delta and c2 is an encryption of gamma (all converted to binaryfrom ascii in the standard way). Which of these two possibilitiesis correct, and why? What was the key k?

Answer & Explanation Solved by verified expert
4.4 Ratings (732 Votes)

The second possibility is correct because after changing from ASCII to binary we get these values.

C1 = 1111100101111001110011000001011110000110 = delta

c2 = 1111101001100111110111010000100110001000 = gamma

c1 =============================================================
Ciphertext (sent the ciphertext to your recipient)
============================================================
75747c7560

============================================================
Hexadecimal
============================================================
64656c7461
1111100101
----------- xor
75747c7560

============================================================
Binary
============================================================
0110010001100101011011000111010001100001
0001000100010001000100000000000100000001


----------------------------------------- xor
0111010101110100011111000111010101100000

c2 =

============================================================
Ciphertext (sent the ciphertext to your recipient)
============================================================
76707d7d60

============================================================
Hexadecimal
============================================================
67616d6d61
1111101001
----------- xor
76707d7d60

============================================================
Binary
============================================================
0110011101100001011011010110110101100001
0001000100010001000100000001000000000001
----------------------------------------- xor
0111011001110000011111010111110101100000
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

A graphing calculator is recommended. For the limit lim x ? 2 (x3 ? 2x + 4) =...

Basic Math
Q

Create a response to the following post: Type II diabetes is the most common type of...

Medical Sciences
Q

assume that the data are stored in variable names x and y. write a matlab code...

Mechanical Engineering
Q

3 paragraphs of the advantages and disadvantages of franchising

General Management
Q

approximately what values of x between 5 and 5 does the original function y have...

Calculus
Q

Presented below are data taken from the records of Ayayai Company. ...

Accounting
Q

Indicate whether the statement is true or false, and justify your answer. The...

Accounting
Q

Chapter 5- Activity Based Costing St. Francis Healthcare and Dialysis Clinic St. Francis Healthcare and...

Accounting
Q

You are given the following assumptions for Firm A. Assume that the firm is going...

Accounting
Q

Consider a one-year bond with face value , a coupon rate , and coupon payments...

Finance
Q

You decided to save $700 every year, starting one year from now, in a savings...

Finance
Q

3. The return-risk statistics of a portfolio comprising two assets A1 and A2 are given...

Finance