Show the working of "Data Encryption Standard" using the figure. Suppose your want to encrypt "M=??3456789ABCDEF" (?? stands for last two numeric digits of your roll number taken in hex notation) with your secret key "K=1234352ABC54327E" (HEX NOTATION), then find the output after first round of "Data Encryption Standard". ROLL NO=18

Show the working of "Data Encryption Standard" using the figure. Suppose your want to encrypt "M=??3456789ABCDEF" (?? stands for last two numeric digits of your roll number taken in hex notation) with your secret key "K=1234352ABC54327E" (HEX NOTATION), then find the output after first round of "Data Encryption Standard". ROLL NO=18

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Based on Advanced Encryption Standard (AES), if the plain text is "AbstrAct is Good" and the shared key is "EaSy FInAL ExAm." Find the required key of Round 2.
4. Encryption is used to secure data messages in computer networks. One possible way of encrypting text consists of rewriting the text by including first the characters found at even indexes (starting from 0) followed by the characters stored at odd indexes, while ignoring whitespace characters. For instance, the String "Exam is fun" can be encoded using the previously explained technique as "Easfnxmiu". To be able to recover the original message based on the encrypted version of the message, some additional information should be added to the encrypted message, namely, the number of characters found at even indexes, the number of characters found at odd indexes, and the indexes at which the white space characters existed in the original message. In this way, reconsidering our previous example, the string "Exam is fun" can be encoded using the previously explained technique as "5 4 4 7 Easfnxmiu". This is particularly true since the original message had 5 characters at even indexes…
Explain what the following lines of code do pad = len(byteblock)%16 * (-1)byteblock_trimmed = byteblock[64:pad]ciphertext = cipher.encrypt(byteblock_trimmed)ciphertext = byteblock[0:64] + ciphertext + byteblock[pad:]
In order to decode the following messages, you will need to determine the cipher used. All of them have been encrypted using one of the methods we saw in the cryptography lecture. The full key to that lecture is in canvas. Need to name the method used to decipher it and show steps in using that method. Do not hesitate to ask questions in the virtual office hours. 2. SI HT EG AS SE MD LU OH ST ON EB DR AH TA LL AR OF UO YO TE RU GI FT UO. EH TT XE NE CN ET NE SS IN AT EB AH PL AD NA DR OW DE TA LE RR OC RE HP IC.
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
If the shared key is "SECURITY" and the result of DES round 15 is "IT? 7b/," what is the ciphertext?
Decode the number using the given private key. Decode the number M = 15 using the private key d = 53 and n = 77. Assume you are decoding the number using the RSA cryptosystem. Note: You can use the Modular Exponentiation calculator to help with the calculation. a 63 (mod 77), decoded number = 63 b 64 (mod 77), decoded number = 64 C 65 (mod 77), decoded number = 65 d. 66 (mod 77), decoded number = 66
Could you devise a key that when it is used on the ciphertext you produced in 1.a, will provide plaintext relish instead of the strike? the photo below is question 1a and please trying to be as detailed as possible when answering the question, justifying well all your steps that you did.
Question 8 please do not use a computer system generater I need to see how it's done
2. Create your own encrypted message using a standard transposition code. Show the work below, and write the key, the message, and the encrypted message. Key: Message: Encrypted message:
Suppose my public key is (n, e) = (91, 11) and I receive from you a ciphertext message 53. What is the actual message? (Note: You must use successive squaring to receive full credit. No credit will be given otherwise.)
The following text has been encoded using the affine cipher with key "9x+3". (That is, multiplying the letter by 9 and add 3 (mod 26) to encode.) For example, the encryption result of letter "A" is "D". Decrypt the following ciphertext. GNVBAXSL XG QWB