7.Encrypt the message MERRY CHRISTMAS PEOPLE using blocks of fiveletters and the transposition cipher based on the permutation of {1, 2, 3, 4, 5 } with σ(1) =3,0 (2) = 5,0 (3) = 1,0 (4) = 2, and o(5) = 4. For this exercise, use the letter X as manytimes as necessary to fill out the final block of fewer then five letters.

Understand that we need to encrypt the message "MERRY CHRISTMAS PEOPLE" using the transposition…

Answered: 7. Encrypt the message MERRY CHRISTMAS…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Similar questions

An encryption function is given as f(p) = (p + y_value) mod 26 where p is the position of the input letter in English alphabets and f(p) is the position of the encrypted alphabet. Find the encrypted representation of “STOP”.
Find I1,I2,I3,I4
Answer number 5
Suppose (n, d) = (55, 3) is the private key of an RSA cryptosystem. If the received ciphertext is C = 49 what is the corresponding plaintext? O 3 4 10 14
Let A=0, Z=25
A corporation wants to determine the best transportation option based on a number of factors, which include passenger comfort, number of transfers, travel time, and cost. Let X1 be a binary variable where X, = 1 means that a direct long-haul flight will be chosen while X1 = 0 means that a non-direct long-haul flight will be chosen. Furthermore, let X2 be also a binary variable where X2 = 1 means that a Business Class seat was chosen while X2 = 0 means a Premium Economy seat was chosen. If the option of choosing a Business Class seat will only happen when a direct long-haul flight is chosen, what would be the appropriate expression for this constraint? O a. X1 + X2 < 1 O b. X1 + X2 = 1 O c. X2 – X1 <1 O d. X, – X1 = 1
Recall that an affine cipher, fa,b(n) = an + b( mod 26), where a, b ∈ {0, 1, 2, . . . , 25}, is said to be valid if gcd(a, 26) = 1. (a)Use the key (a, b) = (3, 0) to come up with the cipher text corresponding to the following plaintext DO WELL. (b) Now use the key (a, b) = (5, 1) to come up with the cipher text for DO WELL. (c) The key (a, b) = (5, 1) was used to generate the following cipher text. Decrypt the message. gbidxv vbfev
Solve the system x= 3 mod 5 x=2 mod 6 x=4 mod 7
1.3. For this exercise, use the simple substitution table given in Table 1.11. (a) Encrypt the plaintext message The gold is hidden in the garden. (b) Make a decryption table, that is, make a table in which the ciphertext alphabet is in order from A to Z and the plaintext alphabet is mixed up. (c) Use your decryption table from (b) to decrypt the following message. IBXLX JVXIZ SLLDE VAQLL DEVAU QLB
Apply the affine cipher formula C=(5P + 2) mod 26 to encript "LASER PRINTER". JGNSA DUNTXNA JSNAS DNUTXAN JGSAN DNUTXAN JGSAN DUNXANT
Decrypt the message CFEJFE which was encrypted using the affine cipher: Alphabet: A = 0, B = 1,..., Z = 25 Message: f(p) = (15p+5) mod 26
a. Given p=23, q=7, and e=5, generate the public key (n,e) and the private key (n,d) using RSA Key generation algorithm. b. Given Bob's public key of (85, 7) and private key of (85, 55), show how Alice can encrypt m=7 to send to Bob. Show the ciphertext. c. Given Bob's public key of (85, 7) and private key of (85, 55), show how Bob can decrypt the ciphertext y=8 received from Alice. Show the plaintext. d. Using the fast exponentiation method (page 182), determine 535 mod 47

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