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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7. If x5+1=(x+1)(x²+x+1)(x*+x+1)(x*+x°+x+1)(x*+x°+x²+x+1) are the factors of x5+1, find the generator polynomials and error correction capabilities of all possible (15,k) systematic cyclic codes.
Answer number 5
Suppose you are working at the State Department and to enter secure facilities requires a password. You create an 8 character password made up of 5 letters (A-Z) and 3 numbers (0-9). No letter or number can be repeated. How many different passwords are possible? a. 1,957,524,000 b. None of these c. 11,881,376,000 d. 5,683,392,000 e. 824,332,000
Q2: Find the convolution of the following two signals: X(n)-28(n) + 8(n-2) +38(n-3), h(n) -{ = 2 ; n = -1,1 ; n = 0,2 elsewhere
O O O o icket systemMy Dispense Academic Calendar My courses (8) - 13 March > Mid Course dashboc 3 4 1 and AB = -2 5 If A = 1 find b24, the (2, 4)-entry of B. vered -1 0 3 (а) — 4 (b) 8 (c) -2 (d) 3 (e) 11 of 1.00 stion Select one: Od O e
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
Verify that transposition errors of adjacent digits lxi I and lXi- 1 will be detected in a bank identification number except when l xl i - I Xi+ 1 I = 5.
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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