Explain and Use Keyed columnar transposition cipher to encrypt a plaintext “Meet me at the park” with key “Study” Note: both parties agreed on the number of columns is 5.

Encrypt the message "DISCRETE MATHEMATICS" using the shift cipher with k=7

(1) Find a quote that you like. Make sure that the total number of characters is at least 50 and no more than 100.  (2) Then pick a number that is between 4 and 24 as your additive key.  (3) Create a table of correspondence of 26 alphabets in plaintext and the ciphertext.  (4) Use the table of correspondence to encode the quote you found in Part (1). Post the encrypted message:For example, here is a quote from John DeweyFailure is instructive. The person who really thinks learns quite as much from his failures as from his successes.We will use additive key 17. The table of correspondence between plaintext and ciphertext is as follows.(attached)      Thus the encrypted message isWRZ CLI VZJ ZEJ KIL TKZ MVK YVG VIJ FEN YFI VRC CPK YZE BJC VRI EJHLZK VRJ DLT YWI FDY ZJW RZC LIV JRJ WIF DYZ JJL TTV JJV J(5) Pick an encrypted message from your classmate and try to decrypt it. Remember to use the frequency table because you will not have access to the additive key. Make sure to include all…

Encrypt the first 4 letters of your last name as a block of data to be encrypted. (Let A=1, B=2, C=3,...Z=26). Decrypt the encrypted number to demonstrate that your system works.   lastname is john

Write the solution in detail:A) Encrypt the following message using poly-alphabetic cipher:Plaintext: “HELLO WORLD”Key:Shift the first letter three positions to its rightShift the second letter five positions to its rightShift the third letter seven-position to its left B) Using the same key, decrypt the following text:Cipher text= “vjv xwb wd”

HELP WITH CRYPTOGRAPHY

6. Confusion hides the relationship between the ciphertext and the plaintext. i) True ii) False

Question # 1: Use the Affine cipher method to encrypt the following plaintext:Summer Term CompletedKey pair (K1, K2) = (5, 3) Remember: i need a Mathematics solution not computer program You must show all the steps of your work

Please describe the techniques of Substitution Cipher and Transposition Cipher.

45. Encrypt the message “success is not final, failure is not fatal” using a columnar transposition cipher for the given keyword “algebra” (1 6 5 4 3 7 2)..