3. DETAILS AUFEXC4 8.2.047. Use a cyclical alphabetic encrypting code that shifts the letters the stated number of positions to decode the encrypted message. 20 positions: ZLCYHX CH HYYX Submit Answer
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- [Part 1] Tree. Decode each bit string using the given Huffman codes. 1. 011000010 Answer: 2. 01110100110 Answer: 3. 01111001001110 Answer:Suppose that you know that a ciphertext was produced by encrypting a plaintext message with a transposition cipher. How might you go about breaking it?Suppose that in a long ciphertext message the letter occurred most frequently, followed in frequency by. Using the fact that in the -letter alphabet, described in Example, "blank" occurs most frequently, followed in frequency by, read the portion of the message enciphered using an affine mapping on. Write out the affine mapping and its inverse. Example 2 Translation Cipher Associate the letters of the "alphabet" with the integers. Let and define the mapping by where is the key, the number of positions from the plaintext to the ciphertext. If our alphabet consists of through, in natural order, followed by a blank, then we have "letters" that we associate with the integers as follows:
- Suppose that in an RSA Public Key Cryptosystem, the public key is. Encrypt the message "pay me later” using two-digit blocks and the -letter alphabet from Example 2. What is the secret key? Example 2 Translation Cipher Associate the letters of the "alphabet" with the integers. Let and define the mapping by where is the key, the number of positions from the plaintext to the ciphertext. If our alphabet consists of through, in natural order, followed by a blank, then we have "letters" that we associate with the integers as follows:Suppose that the check digit is computed as described in Example . Prove that transposition errors of adjacent digits will not be detected unless one of the digits is the check digit. Example Using Check Digits Many companies use check digits for security purposes or for error detection. For example, an the digit may be appended to a -bit identification number to obtain the -digit invoice number of the form where the th bit, , is the check digit, computed as . If congruence modulo is used, then the check digit for an identification number . Thus the complete correct invoice number would appear as . If the invoice number were used instead and checked, an error would be detected, since .Decrypt the ciphertext message “LEWLYPLUJL PZ H NYLHA ALHJOLY” that was encrypted with the shift cipher with shift k = 7.
- 1.Find the convolution of the signals shown, p and u corresponds to (8)The master scheduler in the ABC Widget Company is in the process of revising the master schedule. At the present time, he has scheduled 400 widgets for week 5 and is considering changing this to 500 widgets.a. What information would you need to decide whether you should make this change?b. Suppose that each widget takes one hour of press time and three hours of assembly time three weeks before delivery. Can the additional 100 widgets bemade in view of the following shop loadings? c. If the additional widgets cannot be made in part b above, what actions might be taken to make it possible to produce the required widgets?Encrypt the word THIRD using an alphabetic Caesar shift cipher that starts with shift 3 (mapping A to D), and shifts one additional space after each character is encrypted.=__________Alphabetic means we're only using the characters ABCDEFGHIJKLMNOPQRSTUVWXYZ
- Encrypt the message GRIZZLY BEARS using blocks of five letters and the transposition cipher based on the permutation of {1, 2, 3, 4, 5} with ?(1) = 3, ?(2) = 5, ?(3) = 1, ?(4) = 2, and ?(5) = 4. For this, use the letter X as many times as necessary to fill out the final block of fewer then five letters.Solve the following problems:(a) How many ways can a store manager arrange a group of 1 team leader and 3 team workers from his 25 employees?(b) A state’s license plate has 7 characters. Each character can be a capital letter (A−Z), or a non-zero digit (1−9). How many license plates start with 3 capital letters and end with 4 digits with no letter or digit repeated?(c) How many binary strings of length 5 have at least 2 adjacent bits that are the same (“00” or“11”) somewhere in the string?use a cyclical alphabetic ancrypting code to decode the encrypted message HVS ROM BOG OFFWJSR