QUESTION 5 Which of the following attacks cares about how big the key is? O Keylogging O All of these O Brute force attack Frequency analysis QUESTION 6 Which of the following ciphers can't be brute-force hacked? O DES O AES O One-time pad O All ciphers can be brute-force hacked if given enough time QUESTION 7 Which of the following must be kept secret? (Select all that apply) O The encryption algorithm The bit length of the key The sender O The key O The receiver

Q: Q4: Based on Hill cipher algorithm, if the decryption key is -2 22 -5 17 -11 10 1 -12 In the case…

A: Here i explain about hill cipher encryption:…

Q: Cryptanalysis Given the ciphertext OENCGVGDUTEKRECARILIELORPSYNAOSKLASTTPMXALPHEIIXNOEENNCX,…

A: Given ciphertext is, OENCGVGDUTEKRECARILIELORPSYNAOSKLASTTPMXALPHEIIXNOEENNCX If we carefully…

Q: (d) Showing your working, find the key of the Vigenère cipher below. JLGEQZYX JLGZFCSJ PYXSGMUR…

A: # decrypt ciphertext def decrypt(key, text): # alphabet alphabet = string.ascii_uppercase # alphabet…

Q: Decrypt the following plaintext "LNZM" using Atbash cipher. You have to generate the Atbash…

A: Atbash cipher is a substitution cipher with just one specific key where all the letters are reversed…

Q: Asymmetric ciphers are more secure because of their asymmetric operations, which can't be reversed.…

A: Launch: Unlike symmetric encryption, which utilizes the same secret key to encrypt and decode…

Q: Task 1: Explain how prime numbers are important by evaluating an example based on the RSA algorithm.…

A: - We need to work on the RSA algorithm here to explain why prime numbers are important in this.

Q: Use Rail fence cipher to encrypt the following plain text where key is length of your first name.…

A: The rail fence cipher is a transposition cipher that jumbles up the order of the letters of a…

Q: Assume that a Vigen'ere cipher is used to encrypt a lengthy string of text and that the same string…

A: Vigen'ere is a cypher: Vigen'ere cypher is a way to make the alphabetic text hard to read. A type of…

Q: Question # 2: Use the additive cipher with key = 15 to decrypt the message “WTAAD”. You must show…

A: The above question is solved in step 2 :-

Q: - If IC=0.0389 then the text encryption by

A: If IC=0.0389 then the text encryption by A hill is correct

Q: When using asymmetric key encryption. The following is true We use private key to sign and public…

A: We use a private key to sign and public key to verify We use public key to encrypt and the private…

Q: The ciphertext of the message " ILOVEMYUNIVERSITYVERYMUCH" after encryption by using Transposition…

A: Given:

Q: Ciphers can be categorized into several groups based on the nature of transformations performed,…

A: 1. Ciphertext from plain text.   2. Original message from Ciphertext.

Q: Encrypt using a shift cipher with the key K=4: MYLASTFAREWELL

A: Your question is about shift cipher encryption which given below :

Q: The ciphertext of the message " ILOVEMYUNIVERSITYVERYMUCH" after encryption  by  using Transposition…

A: Given: The ciphertext of the message " ILOVEMYUNIVERSITYVERYMUCH" after encryption  by  using…

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: Compare the given types of cryptanalytic attacks and identify the one which are the hardest for a…

A: In Known-plaintext attack, the plaintext of some part of the ciphertext is known by the attacker ,…

Q: performing the indicated calculations for the e

A: Given  Data :    p=7 q=13

Q: Which one of the following is a mathematical process that produces a plaintext for any given cipher…

A: Cryptanalysis process means the decryption and analysis of ciphers, codes and encrypted text.…

Q: The Cipher text 'QCADIHSF' was Encrypted by Caesar Encryption, when you know the third letter from…

A: The Cipher text 'QCADIHSF' was Encrypted by Caesar Encryption, when you know the third letter from…

Q: The ciphertext of the message " ILOVEMYUNIVERSITYVERYMUCH" after encryption by using Transposition…

A: Given:

Q: Q4: Based on Hill cipher algorithm, if the decryption key is -2 5 -19 16 -14 11 7 -17 In the case…

A: Solution :: Let's see first what is hill cipher algorithm ?   the Hill code/puzzle is a lie…

Q: Everyone knows how to break the AES and RSA encryption schemes, so why are they still in use?

A: Introduction Data can be encrypted using encryption to ensure that only authorized parties may…

Q: Block ciphers are less common in symmetric encryption algorithms Group of answer choices True…

A: Introduction: Using a cryptographic algorithm and key to encrypt data in blocks, a block cypher is a…

Q: Which one of the following is a correct cipher for "too hard to be hard" if encrypted using Caesar…

A: Conversion of text "too hard to be hard" using Caesar cipher is in step2.

Q: Which of the following statements is FALSE regarding cryptography? a. Asymmetric ciphers use the…

A: Answer: DES algorithm is an example of block cipher. Hence choice c. DES algorithm is an example of…

Q: Write a program about password cracking. The password file should contain 6-digit numbers only (from…

A: python program about password cracking

Q: Public key cryptosystems are: (more than one may be true, choose all that are true) a offering a…

A: Cryptosystem:A cryptosystem, also known as a cryptographic system or encryption system, is a set of…

Q: Most modern encryption uses a binary cipher to protect plaintext. Bit streams have their bits…

A: Introduction ;   A stream cipher is a symmetric key code that joins plain text digits with a stream…

Q: Question 9: Using public key cryptography, X adds a digital signature ø to message M, encrypts , and…

A: The question has been answered in step2

Q: Which of the following statements about encryption is FALSE?

A: Ideally an encrypted message should appear completely random. False It is not a random activity it…

Q: Assuming you have computer can perform 4 decryptions/seconds. Compute the time required for…

A: Given:

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: Triple DES Encryption is the cascade of O DES-Deccryption then DES-Encryption then DES-Decryption…

A: 1) In Triple DES encryption, the plaintext is first encrypted with one key using the DES algorithm,…

Q: The ciphertext of the message " ILOVEMYUNIVERSITYVERYMUCH " after encryption by using Transposition…

A: Answer: VNSEC OURVU LYEYM IMVTYY Cipher text ILOVEMYUNIVERSITYVERY MUCH KEY: 54321 Filling the text…

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: 3. If the key is 24 19 and the ciphertext is "RXAODY" find the plaintext using Hill cipher method. 1…

A: Hill cipher method A polygraphic substitution cypher built on linear algebra is the Hill cipher. A…

Q: One type of cryptographic algorithm splits the plaintext into equal sized parts before mixing in the…

A: Below is the simplified answer to the given MCQ problem:

Q: Develop a system (other than Substitution cipher, Transposition cipher, or Vigenѐre cipher) that…

A: Сiрhers,  аlsо  саlled  enсryрtiоn  аlgоrithms,  аre  systems  fоr  enсryрting  аnd  deсryрting…

Q: PLAIN TEXT: ALIVE KEY: YOU CIPHER SYSTEM: VIGENERE The resulting cipher text is

A: #include<stdio.h>#include<string.h>int main(){    char mat[27][27],str[29],key[29];…

Q: The ciphertext below is known to have been encrypted using a Vigenère cipher. (a) Explain how a…

A: Solution:- Given Ciphertext:- JLGEQZYX JLGZFCSJ PYXSGMUR BYUWJLGF BYURBDCE NGYVZQIR EZZEQZYX…

Q: Q1-Vigenere cipher is a method of encrypting alphabetic text using a simple form of polyalphabetic…

A: To encrypt the plaintext "safranboluisaheritagecity" using the Vigenere cipher with the keyword…

Q: 2. Decrypt the ciphertext below, using the transposition cipher (column) and the key is {14358726).…

A: We need to decrypt the given ciphertext using transposition cipher.