You have found one page ciphertext which was encrypted using Vigenere cipher. You found the string TICRMQUIRTJR occurs three times in the text. The first occurrence starts at character position 10 in the text, the second at character position 241, and the third at character position 472. By using Kasisiki test, you may find the possible lengths of key word. Suppose you make a guess that the above repeating ciphertext is the encryption of the plaintext cryptography If your guess is right, find the keyword. errands coached correct coexist erasion

Q: Consider the following plaintext message P = Follow us What is the corresponding ciphertext if an…

A: To generate the key for a Vigenère action, Autokey adds a unique key to the message. Any encryption…

Q: by utilization of rail -fence cipher decrypt the message "WDNTLAYOEEOTAKNMR" and you given the key…

A: Here given three different question  so we solve one by one: we also assume  something.…

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: In an RSA cryptosystem, you intercept a ciphertext C = 2022 sent to a user whose public key is (e =…

A: Given C=2022 e=27893 n=124711 n=p*q where p and q are prime numbers 124711 can be written as the…

Q: In a public-key system using RSA, you intercept the ciphertext C = 10 sent to a user whose public…

A: We know that the ciphertext C = 10, and the public key PU = {e, n} = {19,99}. Based on Euler’s…

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: Use the Rail Fence Cipher, with a key of 3, to encrypt the message below: Plain text: FREE PIZZA…

A: Rail Fence Cipher encryption in c++ code

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

A: The Answer is

Q: In a public key, cryptosystem using RSA algorithm, user uses two prime numbers 5 and 7. He chooses…

A: RSA Encryption Algorithm RSA Data Security invented RSA encryption, which is a public-key…

Q: Using the affine cipher, encrypt the string “TABLE” using the keys a = 3 and b = 2. Given the…

A: Plaintext = TABLE Value of x is taken based on alphabetical order, with A = 0, B = 1, C = 2 and so…

Q: Use Elgamal encryption with public prime modulus q=11, to encrypt the message m=3 (Find the…

A:

Q: Q1: Based on DES, if the shared key is "SECURITY" and the output of round 15 is "IT*? 7b/" find the…

A: How do you remove cipher text encryption?In order to decrypt / define a coded message, you need to…

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: With one-time pad (OTP), if the key is composed of all zeros then the plaintext and the ciphertext…

A: Answer : yes , if plain and cipher text are identical then there is no strongest should be left in…

Q: The following cipher text is obtained using a rail-fence method with 4 rails. What is the plaintext?…

A: answer is

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

A: Given:

Q: Find the ciphertext using DES if the shared key is "SECURITY" and round 15's output is "IT? 7b/"?

A: Public Encryption Key and Shared Key To safeguard communications delivered between strangers, SKIP…

Q: & Moving to the next question prevents changes to this anwer. Question 6 Decrypt the following…

A:

Q: A secret agent successfully intercepts an encrypted message below: Ciphertext 1 Y C P B R I…

A: Solution:--   1)Vignere cipher can be used for the encryption process of the alphabets.   2)As there…

Q: 8. Use One Time Pad to Decrypt the given ciphertext: ORGCAR using keyword: KEYWORD

A:

Q: Decrypt ciphertext (kx mod p = 7, ge mod p = 8). The ciphertext was created using Elgamal encryption…

A: 3). ANSWER : GIVEN THAT : Shared k value : 3 k inverse mod p :4 plaintext x : 6

Q: Use the Vigenère cipher with the keyword 'tablet' to encrypt the following sentence: "Programs".…

A: Given Data Values Use the Vigenère cipher with the keyword 'tablet' to encrypt the following…

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: Implement a known plaintext attack on the hill cipher. Plaintext = "how are you today" and…

A: Below is the perfectely working code for the problem :

Q: For simplicity, let's say a Vigen'ere cypher is used to scramble a long piece of text, and the same…

A: The Vigen'ere cypher is as follows: The Vigen'ere cypher is a technique for encrypting alphabetic…

Q: If "shifting by 4" is used in the Caesar cipher, the ciphertext of "FOUR" is O JSYV FRUH JMZI none…

A:

Q: Question 2: (18 marks) Use the Vigenère cipher to DECRYPT the following ciphertext: "OGTJQPPB"…

A:

Q: Encrypt the message WATCH YOUR STEP by translating the letters into numbers, applying the given…

A: Encryption in cyber security is the conversion of data from a readable format into an encoded…

Q: Write the code to decrypt ( tfdvsjuz) A- using Caesar cipher when the key = 25? ? find the plaintext…

A: Ceasar cipher is one of the simplest encryption technique in which each character in plain text is…

Q: An encryption function is provided by an affine cipher ?:? → ?, ?(?) ≡ (5? + 8)??? 26, ? = {1,2, ……

A: The affine cipher  is a kind of mono alphabetic replacement figure, where each letter in a letter…

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: Question#5: Use following transposition cipher followed by substitution cipher to encrypt and…

A: Initially the word is Actual Word e x a m i n a t i o n s Transposition Cipher i a n e x m n i…

Q: Think about the case when the same string of text is encrypted using the Vigen'ere cypher and the…

A: Vigen'ere cipher: To decode, subtract the value of the first letter of the ciphertext and the first…

Q: Q1: Based on Vigenere Encryption Cipher, if the plain text is "THE LENGTH OF BLOCK DEPENDS"" and the…

A: Vigenere Cipher is a method of encrypting alphabetic text. It uses a simple form of polyalphabetic…

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: 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: You are asked to find the ciphertext that corresponds to the following data, using the CFB mode. As…

A: Solution:--   1)The given question has required for the solution which has asked for the problem…

Q: Create an RSA encryption key, completely by hand. using two prime numbers larger than 5 but smaller…

A:

Q: Encrypt the message "HELLO MY DEAR!" using transposition cipher? my question is when we encrypt a…

A: Yes, when we encrypt a message we include a character in the operation using transposition cipher…

Q: The ciphertext "einnd tdkng" is obtained using the substitution cipher with the key below. What is…

A: Given; The cipher text "einnd tdkng" Letters a b c d e f g h i j k l m n o p q r s t u v w x y z p…

Q: Using the affine cipher, encrypt the string “TABLE” using the keys a = 3 and b = 2. Given the…

A: As per our honor code, we are answering the first question.

Q: Decrypt ciphertext (kx mod p = 7, ge mod p = 8). The ciphertext was created using Elgamal encryption…

A: Here is the solution which is mentioned below:

Q: Q-5: Using a one-time pad version of the Vigenere cipher, the key is a stream of random numbers…

A:

Q: By using Row transposition encryption method, calculate the ciphertext of plaintext "we are :doing…

A: Given, A plaint text "we are doing our exam".  Using Row Transposition encryption, find the…

Q: Suppose that when a long string of text is encrypted using a Vigen`ere cipher, the same string is…

A: Vigen`ere cipher: Vigen`ere cipher is a method which is used to encrypt the alphabetic text. It…

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

A: The Answer is

Q: Given the Vigenère ciphertext below, what is your best guess for the key length and why

A: Vigenere Cipher Vigenere Cipher is a strategy for scrambling alphabetic text. It utilizes a basic…

Q: In a public key cryptosystem using RSA algorithm, user uses two prime numbers 5 and 7. He chooses 11…

A: Please refer to the following step for the complete solution of the problem above.

Linear Programming Concepts

Linear programming is a famous mathematical modeling tool for determining the best distribution of scarce resources among competing demands. Machinery, time, personnel, raw materials, money, and space are all resources. It is used to find the most optimal solution to a problem with given constraints. The real-life situations can be formulated using linear programming concepts into a mathematical model. Linear programming problems consist of an objective function and linear equalities subjected to constraints.