4. Using the Vigenère Auto Key Cipher (table given below) the keyword is "time". Convert the plain text "ayptography" into cipher text. ABCDEFGHIJKLMNOPQRSTUVWXYZ AABCDEF GHIJKLMNOPQRSTUVW X Y Z BBCDEF GHIJKLMNOPQRSTUVWX YZA CCDEFGHIJKLMNOPQRSTUVW X YZA B DDEFGHIJKLMNOPQR ST UV W X Y ZAB C EEFGHIJKLMNOPQR STUV w X YZABCD FFGHIJKLM NOP QR STUV W X Y ZABCDE GGHIJKLM NOPQR STUV w X Y ZABCDEF HHIJKL M NOPQRSTUVW X Y ZABCDEFG DOJKLMNOPQRSTUV W X Y ZABCDEF GH JJKLMNOP QR STU V W X Y Z ABC DEFGHI KKLM NOPQR STUV w X Y ZA BCDEFGHIJ LLMNOP QRSTUVW XY ZABCDEFGHIJK MMNOPQRSTUVWXYZABC DEFGHIJ KL NNOPQRSTUVWX Y ZABCDEF GHIJKLM 0OPQRSTUVW X Y ZABCDEFGHIJKLM N PPQRST UV W X Y ZABC DEFGHIJKLM NO QQRSTU v w X Y ZABCDEFGHIJKLMNOP RRSTUV w X Y Z A BCDEFGHI ĮKLM NO PQ SSTUVW X YZABCDEFGHI JKLM NOPQR TTUVWX YZABCDE FGHIJKLMNOPQRS UUVWX Y ZABCDEF GHIJKLMNOPQR ST vv w x Y Z ABCDEFGHIJKLMNOPQRS TU ww x Y ZABCDEFGHIJKLMNOPQRSTUV XX Y ZABCDEFGHIJKLMNOPQRSTUV W YYZABCDEFGHIJKLM NOPQR STU V X ZZABCDEF GHIJKL MNOPQR STUV w X Y

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

A: The Answer is

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: The following ciphertext: ASNEFOELBCVYNAWEEEOONASRNUTIYIEIDMT was produced using a transposition…

A: total 35 characters are there, including spaces and special character so it will be 5x7

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

A: Given:

Q: Use the mixed alphabet cipher to encrypt the following message alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ…

A: MIXED ALPHABET CIPHER: The mixed alphabet cipher is basically a cryptographic approach that is used…

Q: 3. Apply Playfair cipher to encrypt the message “the key is hidden under the door pad" using…

A: The answer is...

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

A:

Q: If header files are added please provide them The Caesar cipher is one of the earliest known and…

A: C++ used to answer this question

Q: Using the modulo operator and key = 7, decrypt the cipher text "OHWWF ULD FLHY"

A: Your question is about Using the modulo operator and key = 7, decrypt the cipher text "OHWWF ULD…

Q: using a simple transposition cipher with five columns and eight rows. Type the resulting ciphertext…

A: Solution

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

A: The Answer is

Q: write code in phython Affine Cipher: Encrypt the message ""Save our souls" using affine cipher…

A: def egcd(a, b): x,y, u,v = 0,1, 1,0 while a != 0:  q, r = b//a, b%a  m, n = x-u*q, y-v*q  b,a,…

Q: write code in phython Affine Cipher: Encrypt the message ""Save our souls" using affine cipher…

A: The programming methodology for the program is given by: Extended Euclidean Algorithm for finding…

Q: By using playfair cipher find key if the length of key 7 and plaintext =wh yd on ty ou , and the…

A: Plaintext-= wh yd on ty ou

Q: t is the encryption of the following string using the Caesar cipher: THELAZYFOX?

A: Cryptography is the training and investigation of methods for secure correspondence within the sight…

Q: 2. Use the rail fence cipher to encrypt the statement "meet me after the toga party" 3. Using…

A: 2)  In rail fence cipher the plaintext is written down as a sequence of diagonals and then read off…

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: By finding the key length in worksheet 7 .doc,  you can use frequency analysis for each letter of…

A: Given data, By finding the key length in the given worksheet,  we can use frequency analysis for…

Q: A plain text use caesar cipher to encrypt plain text where the key is a→f and the ciphertext is:…

A: a is encrypted as f  So, key value is f-a=5 And so let's find the original value by reducing 5 from…

Q: Please Encrypt the following text by using Scytale cipher where the Key length is 6 Palintext: This…

A: Scytale Cipher is an encryption mechanism that was used as early as 400BC for secret communication…

Q: Decrypt the following ciphertext using Hill Cipher where the key is given. 2 a) Ciphertext =…

A: Given Data : Cipher Text = "vegxfl" Key = CFJZ

Q: The ciphertext of the message " SUNDRY" after encryption by using Simple Substitution cipher and the…

A: Cryptography: In cryptography encryption is the concept in which information is encrypted into…

Q: What will be the encrypted text corresponding to plain text “CLASSIFIED” using columnar…

A: For encrypting using columnar cipher we have to arrange the letters of the plain text in a table…

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: the Vigenère cipher to decrypt the following message alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ key:…

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

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: Decrypt the following transposition cipher.  YREEOESXUAOYAWMZ What is the plain text? How many…

A: Given transposition cipher as:YREEOESXUAOYAWMZ

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: RTC Assignment / Using the secret key 53421, Complete the Row Transposition Cipher MATLAB code for…

A: Given cipher='DTPOQHSALAADETIGICARBAHIF';key=[5,3,4,2,1];

Q: RTC Assignment / Using the secret key 53421, Complete the Row Transposition Cipher MATLAB code for…

A: First, we need to divide the given message equals size substrings of size '5' and then we apply the…

Q: RTC Assignment / Using the secret key 53421, Complete the Row Transposition Cipher MATLAB code for…

A: MATLAB code is given below

Q: Using Vigenère Cipher, decrypt the given cipher text “PNDSRX DLSCWXT” and find its plaintext. The…

A: Given Data: Cipher Text: PNDSRX DLSCWXT Key: basket

Q: Using Vigenère Cipher, decrypt the given cipher text “PNDSRX DLSCWXT” and find its plaintext. The…

A: Given: ciphertext: PNDSRX DLSCWXT key: basket required: plaintext

Q: Given is the following string of ciphertext which was encrypted with substitution cipher. asvphgyt…

A: Answer : WORLDCUP here cipher text is asvphgyt; the encryption rule is C=(M+k)Mod 26 here the 1st…

Q: Q2. By using playfair cipher find the cipher text. M:text. K:key49.

A: I have provided full solution using playfair cipher in step 2 for the given plain text and key.

Q: Use the modified Caesar cipher described in the assignment instructions to decrypt the following:…

A: Modified Caesar Cipher 1. Simple Substitution Technique 2. Key (K) range: 1-25 3. Working -…

Q: art of the problem with a cipher like this is how week it is. Without knowing the ‘key’ how can I…

A: Here below  i explain in simple terms, how to get the cipher without knowing the key:…

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

A: The Answer is

Q: a. Use the Caesar cipher to encrypt the message WHERE SHALL WE MEET. b. Use the Caesar cipher to…

A: Step 1 The answer is given in the below step;

Q: Using data p=3, q=11, n=pq, d=7 in RSA algorithm find the cipher text of  the given plain text…

A: Explanation:  We find e using RSA algo..... I hope that is mcq so answer is ,a.

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

A: Answer: Our guide is answer first there question in details from first question. This is question…

Q: OTP Cipher is an example of stream Cipher. State TRUE OR FALSE  Select one: True False

A: True OTP Cipher is an example of stream cipher.   According to the statement  This scheme is the…

Q: 14- The following message has been encrypted using the Cacsar cipher with key 22: YHKOA PDA ZKKN.…

A: The Answer is in Below Steps

Q: 4. Dr. Abernathy's favorite movie is "HMT AFIFNM". Use a Vigènere cipher with the keyword NEO to…

A: Given cipher text is "HMT AFIFNM" Key word= NEO Vigenere cipher is a type of polyalphabetic…

Q: 2. The following ciphertext message was encrypted using Vigenére Cipher cipher with keyword JEDI.…

A:

Q: 2. The following ciphertext message was encrypted using Vigenére Cipher cipher with keyword JEDI.…

A:

Q: 2. The following ciphertext message was encrypted using Vigenére Cipher cipher with keyword JEDI.…

A: