Encrypt the plaintext “You sunk my battleship” using a rail fence cipher of depth 5.
Encrypt the plaintext “You sunk my battleship” using a rail fence cipher of depth 5.
5. Using the modified rail fence algorithm (matrix size 5 x 5), encrypt the following message. Plaintext message: Defend the east and south wall Use the following key word to Also show your results after 1st and 2nd stage. What is the final encrypted message? encrypt: 31254
1. Encrypt the plaintext message a dime a dozen using a Caesar cipher with a shift (to the right) of 5.
Using a ROT5 cipher encrypt the following plaintext. Prove your answer by showing the steps for both the encryption and decryption. (20 points) Meet at the baseball field at three oclock 2. Using a ROT3 cipher decrypt the following ciphertext. WKHF RUYH WWHL VUHG
1. Encrypt the message howareyou using the affine cipher using the key (7,3). (a) What is the resulting ciphertext? (b) What is the decryption function you can use to decipher each ciphertext character? (c) Use your decryption function to decrypt the message to confirm you get the ciphertext back. 2. Use the ADFGX cipher using the grid below and the keyword "place" to encrypt the plaintext "brandenburggate". FREE GX (a) (b) What is the resulting ciphertext? How does the ADFGC...
1. Something you know (SYK) Something you have (SYH) Something you are (SYA) Something you do (SYD) are attributes that allow you to do what to a user? ___________ 2. Consider the primitive case of asymmetric encryption; no digital signature and no digital envelope. A person sends a message to a recipient using asymmetric encryption. What is the total number of keys used to send and receive the single message? _________________ 3. If the sender of a message encrypts the...
Using a substitution cipher that skips by 7 characters, encrypt the message COMPUTERSCIENCE4ALL. For the input alphabet use 26 uppercase letters followed by 10 digits numbered 0 through 9. I have encrypted an English phrase using a substitution cipher that has an input alphabet of 26 uppercase letters. My cipher has skipped by N letters. You may assume that the most common letters in the English language are E T A O I N Sentence: LJWRPDNBBCQNARPQCJWBNA
5. ENCRYPT following message using VIGENERE CIPHER a. attack at dawn; Key = SECRET b. no travel in april; Key = PANDEMIC
PLEASE DESCRIBE THE STEPS IN THE CODE! please.. (simple code) In this homework, the rail fence cipher is written in Python. We did implement this already in the class by appending letters sequentially to three different lists, which represented three rails. In this project, you are allowed to implement it in any other way. First step is to drop all the space characters inside the plain text. An easy way to implement it is to notice that the first rail...
Substitution Cipher Ke 1. Decipher the following ciphertext using the substitution cipher key shown above: (4 points) Ciphertext: DOVMYWOJAYJMYWZBAOXOADY!U I Plaintext: The following information was extracted from The BLACK Chamber's Pigpen Cipher page. The content is available at https:/simonsingh net The_Black Chamber'pigpen html. "The Pigpen Cipher was used by Freemasons in the l8th Century to keep their records private. The cipher does not substitute one letter for another; rather it substitutes each letter for a symbol The aiphabet is written...
Cryptography 4. Consider a transposition cipher that needs to encrypt a message of length 15 using [3, 1, 4, 5, 2] as the key. a) (5 pts) Show the process of encryption using the matrix representation of the key. You may pick any message of length 15 as your choice. b) (5 pts) Repeat Part (a) for the process of decryption. The output of the decryption should be the original message.