Answered: Q4: Based on Hill cipher algorithm, if…

Q4: Based on Hill cipher algorithm, if the decryption key is -2 2 -5 17-11 11 1 13-12 In the case that we used uppercase letters, a, b, c, d, and encryption е. Find the key (if possible).

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

Related questions

Q: ased on One-Time algorithm, if we have used Uppercase, space, ., and ? Now the plaintext “THERE ARE…

A: The plain text is THERE ARE TWO TYPES OF ENCRYPTION. the cipher text is…

Q: The affine cypher with key "9x+3" was used to encrypt the following text. (To encode, multiply the…

A: Given form C = 9X+3 Plain text X = (C-3)/9 (mod 26) X = (C-3)9 -1 (mod 26) ➔ utilizing…

Q: Apply transposition cipher with key as “site” to find the ciphertext for the following plaintext:…

A: Transposition cipher It is very simple and easiest method and also known as columnar transposition…

Q: Your job is to decrypt the intercepted message CQNTNHRBDWMNACQNVJC, which is believed to reveal the…

A: letter=[chr(x) for x in range(65,91)] cipher="cqnthnrbdwnacqnvjc" cipher=cipher.upper() for key in…

Q: GIven that the key of hill cipher as following 15 YJ and you given that the affine cipher text as (A…

A: The answer is C: k1=17, k2=9, D=FLOOH

Q: We know using a longer key for symmetric encryption is more secure than using a shorter key. For…

A: The question is to explain why we don’t use even longer keys for stronger encryption.

Q: Suppose your RSA public key is PK: {n, e} = {13861, 37}. Your friend sends you a ciphertext C =…

A: a) n=13861(given)e=37n=p*qn=167*83 b) e=37(given) RSA uses the Euler φ function of n to calculate…

Q: Attacks on a cipher that use letter frequency can be made more difficult by assigning multiple codes…

A: Homophonic substitution cipher it is much more complicated varient of substitution cipher so…

Q: Cybersecurity. In the RSA algorithm, if p=7 and q=11, select the public key and calculate the…

A: The objective of this question is to understand the RSA algorithm, select the public key, calculate…

Q: A secret key cryptography algorithm can be used to: (check all that apply) Secure the communication…

A: A secret key cryptography algorithm can be used to : Secure the communication between two parties.…

Q: In a public key cryptosystem using RSA algorithm, a user uses two prime numbers 11 and 17. He…

A: 12. To find the decryption key, we need to calculate the modular multiplicative inverse of e mod…

Q: Use the Vigenère cipher to DECRYPT the following ciphertext: “OGTJQPPB” knowing that the keyword…

A: The Answer is

Q: RSA encrypts, and decrypt operations are: C=Memod(n) M=Cdmod(n) Consider an RSA public key PU…

A: Answer: C=225

Q: A Feistel cipher is used in the DES algorithm. Describe the operation of a Feistel cipher.

A: The Feistel structure is used in the encryption process, with each cycle of processing the plaintext…

Q: Network Security problem Q1] Consider the RSA encryption algorithm. Suppose that a malicious user…

A: We are given Ciphertext C and PUa ={5, 35} Public key in general is represented as {e, n} So, {e,n}=…

Q: Messages are to be encoded using the RSA method, and the primes chosen are p = 13 and q = 23, so…

A: Given, p = 13 q = 23 n = p*q = 299 Φ(n) = (p-1)*(q-1) = (12*22) = 264 e = 13

Q: I know how the Playfair cipher works. I would like to know how to find the keyword of the Playfair…

Q: In block ciphers, if we use AES for encryption, it does not matter whether the cipher is CBC-based…

A: In block ciphers, if we use AES for encryption, it does not matter whether the cipher is CBC-based…

Q: Consider a large institution that has 9970 employees. How many keys are necessary to allow any pair…

A: Note : As per guidelines we are authorized to answer 1 question when multiple questions are posted.…

Q: Q2) Using hill cipher method, using the following key 3*3 matrix find the ciphertext for the…

A: Each alphabet is mapped to its respective number and then the matrix of plaintext is multiplied with…

Q: RSA Using python script: Attacker obtains Q(n) = 15000 and knows public key is (en) = (19,15251). He…

A: Given, n=p*q=15251 ϕ(n)=(p-1)*(q-1)=15000 ⇒pq-p-q+1=15000 ⇒15251-p-q+1=15000 ⇒p+q=252…

Q: A ciphertext was generated using an affine cipher. The most frequent letter in the ciphertext is “C”…

A: An affinе ciphеr is a typе of substitution ciphеr that usеs two intеgеrs, callеd thе kеy, to еncrypt…

Q: Your first and last names as a plaintext, please perform encryption using the following…

A: The Playfair cypher was the first digraph substitution cypher to be used in practise. The cypher was…

Q: Encrypt the message “ABCDEFGHIJKLMNOPQRST” using the columnar transposition cipher with the key “3 4…

A: To encrypt "ABCDEFGHIJKLMNOPQRST" with the columnar transposition cipher and key "3 4 2 5 1," start…

Q: The Caesar Cipher Algorithm was introduced in Week #1. Encryption is the act of encoding a message…

A: Python code is as follows:-

Q: The following text was encrypted using Affine Cipher. Find the plain-text if you know that the…

A: The affine cipher is a cipher, where each letter in an alphabet is mapped to its numeric equivalent

Q: Let p=11,q=13, and n=23 be used for RSA encryption. a. Compute and . b. Compute s.

A: Encryption is a technique in which a particular information or data is encrypted using the key. The…

Q: Let's say you generated RSA keys and you chose p=59, q=43, and the smallest encryption exponent that…

A: Solution:

Q: Based on Advanced Encryption Standard (AES), if the shared key is "Information Secu" and the…

A: AES is implemented in software and hardware throughout the planet to encrypt sensitive data. it's…

Q: plaintext “I LOVE CRYPTO”, what is the ciphertext given that: Row Transposition Cipher algorithm…

A: Row Transposition Cipher:- Given plain text as I LOVE CRYPTO. so we will have to fill it in 4X4…

Q: Cryptanalysis is the science of recovering the plain text x from the cipher text y or recovering the…

A: Cryptanalysis is the science of recovering the plain text x from the ciphertext y or recovering the…

Q: Find the ciphertext using DES if the shared key is "SECURITY" and the output of round 15 is "IT?…

A: INtroduction Shared Key and Public Encryption KeySKIP uses a combination of cryptography shared…

Q: Encrypt this Rail Fence/Caesar Cipher. Imagine that the plaintext has already went through 1 round…

A: encrypted message:(5,12,3,7,9,6,4,14,1,13,10,8,15,2,11,16) explanation: Suppose your plaintext is…

Q: The following text has been encoded using the affine cipher with key "9x+3". (That is, multiplying…

A: Below is the answer with calculation:

Q: Given an integer 6, what's the RSA encrypted cipher for this integer if using the above RSA keys…

A: A RSA key pair incorporates a private and a public key. The RSA private key is utilized to produce…

Q: Decrypt: Encryption and decryption are mathematical inverses using the Caesar/Rail Fence Ciphe

A: Introduction Rail fence ciphers (also called zigzag ciphers) are a form of transposing cipher. It…

Q: Use a Caesar Cipher with digraph coding to encrypt the following plaintext: ‘buffer’ with a key of…

A: The answer is...

Q: Assume the cryptanalist has two pairs (x, y1) and (î, y2) such that yl = DES(K,r) and y2 = DES(P a…

A: The term cryptography is supposed to be gotten from the Greek words krypto, and that implies stowed…

Q: 1. Using the ABBA key, decrypt the word PKWDLDTB, if the Playfair cipher was used. Select ciphertext…

A: The Playfair cipher is a written code or symmetric encryption technique that was the first…

Q: On Groundhog Day, the groundhog randomly chooses and sends one of two possible messages: m0 =…

A: According to the question, we have to determine which encryption methods could have produced given…

Q: Based on Advanced Encryption Standard (AES), if the plain text is "AbstrAct is Good" and the shared…

A: If the plain text is "AbstrAct is Good" and the shared key is "EaSy FInAL ExAm." find the required…

Q: Also, in the Caesar cipher you could not encrypt two different letters to be the same letter…

A: In vignere cipher 26×26 matrix is created in a such way that first row is A to Z and second B to Z…

Q: What will be the ciphered text corresponding to “ALGORITHM” if bifid cipher is used for encryption…

A: Question. What will be the ciphered text corresponding to “ALGORITHM” if bifid cipher is used for…

Q: In order to decode the following messages, you will need to determine the cipher used. All of them…

A: Cryptography which can be used to provide confidentiality, integrity, authentication, and…

Q: Which blocks of two letters [x, y] will remain unchanged by the block cipher below? Use matrices,…

A: Tackling straight conditions utilizing framework is finished by two unmistakable strategies to be…

Question

Q4: Based on Hill cipher algorithm, if the decryption
key is
-2 2 -5
17-11 11
1 13-12
In the case that we used uppercase letters, a, b, c, d, and
encryption
е.
Find
the
key
(if
possible).

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Perform encryption and decryption using the RSA algorithm for the letter "S". Show all steps in details when p=5 , q=7 , e=5.
Let k be the encipherment key for a Caesar cipher. The decipherment key is 26 – k.One of the characteristics of a public key cryptosystem is that the encipherment anddecipherment keys are different. Explain why the Caesar cipher is a secret keycryptosystem, not a public key cryptosystem?
Q1 / If you know [k] is key for encryption by hill cipher, and [B] is inverse of [K] and [C] is a result of multiplying [k]*[B], 1- Find the key 2- Encrypt by using hill cipher the text (fourth stage) Solution by Matlab [-0.1389 0.0833 -0.01391 B= 0.0486 -0.2708 0.4201 0.1944 -0.0833 -0.1806]
How long does it take on average to break monoaplabetic cipher using computer which can try 2 million keys in a second? The cipher is used in the Swedish language and it has 29 letters. Give your answer in years
Using public key cryptography, X adds a digital signature s to message M, encrypts <M, s>, and sends it to Y, where it is decrypted. Which one of the following sequences of keys is used for the operations? A) Encryption: X's private key followed by Y's private key; Decryption: X's public key followed by Y's public key B) Encryption: X's private key followed by Y's public key; Decryption: X's public key followed by Y's private key C) Encryption: X's public key followed by Y's private key; Decryption: Y's public key followed by X's private key D) Encryption: X's private key followed by Y's public key; Decryption: Y's private key followed by X's public key
In RSA encryption, if the public key is 299, what is the private key? (Enter your answers as a comma-separated list.)
Decode the number using the given private key. Decode the number M = 15 using the private key d = 53 and n = 77. Assume you are decoding the number using the RSA cryptosystem. Note: You can use the Modular Exponentiation calculator to help with the calculation. a 63 (mod 77), decoded number = 63 b 64 (mod 77), decoded number = 64 C 65 (mod 77), decoded number = 65 d. 66 (mod 77), decoded number = 66
Let the encryption keyword of a monoalphabetic cipher be ROME. (a) Show the encryption key in the table form. (b) Show the decryption key in the table form. (c) Obtain ciphertext for the following message sentence: Rome wasn’t built in a day.
Suppose your RSA public key is PK: {n, e} = {13861, 37}. Your friend sends you a ciphertext C = 9908. But unfortunately you have forgotten your private key, now you have to crack it yourself.a) Write down a possible condition of factors p and q.p= q=b) What is your private key SK: {d}?d=c) What is the plaintext of your friend’s message?The plaintext M =d) Suppose the plaintext M is a 12-digit number consisting of a prefix “19” and 1234567890. What is the corresponding ciphertext? Since M is greater than n, you only need to encrypt four digits at a time. Ignore redundant zeros. e.g., 0001 = 1. The result should contain three integers.The ciphertext C0 =
A ciphertext has been generated with an affine cipher. The most frequent letter of the ciphertext is “F”, and the second most frequent letter of the ciphertext is “C”. Break this code by figuring out the key numbers. Hint: Based on the letter frequency, E is the most frequent letter and T is the second most frequent letter. Therefore, F should be the ciphertext of E and C should be the ciphertext of T.
The following text has been encoded using the affine cipher with key "9x+3". (That is, multiplying the letter by 9 and add 3 (mod 26) to encode.) For example, the encryption result of letter "A" is "D". Decrypt the following ciphertext. GNVBAXSL XG QWB
The following is related to the Hill cipher. A pair of plaintext and itscorresponding ciphertext is provided below, so find the key (which is a 3x3 matrix). Plaintext: thisquestionisabouthillcipher → Ciphertext: fhicqumstyonysadoufhihlcyphmr