text Q.4 Use polyalphabetic ciphers to encrypt plain VERY HAPPY AND BEAUTIFUL GIRL" use key 'ANOTHER' "SHE IS
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- Encrypt The following correspondence between letters and numbers is used in the Caesar cypher. a b c d f h i j k lm n t V W e g 6. u y 0 1 2 3 4 7 8. 9. 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Encrypt the animal name zebra with the Caesar cypher with a key of 3. What is the encrypted animal name (enter a string of letters with no spaces)? Decrypt An animal name was encrypted with the scheme described in the previous question (it was encoded with the key 3). The encrypted animal name is pduprw .What is the animal name?6. In a Rivest, Shamir and Adleman (RSA) cryptosystem, a particular user uses two prime numbers P and Q to generate the public key and the private key. If P is 23 and Q is 29, using RSA algorithm, find the following: e) public key f) private key g) Encrypted data (Assume the original message, M=7) h) Decrypted dataEx/ if the following message “paperx” is encrypted by using Hill cipher and converted into ciphertext "EJGPNH" what is the key matrix if you know that the key is (2*2) ?
- PART 1 1. Using python, create a program with a function of enc_text(text, key) to encrypt the variable text using the provided key (executing a modified version of Ceasar Cipher). Follow these rules: а. The key will contain a word made up of the letters 'a' and 'b'. The cipher will use the key to know the direction of the shift: • 'a' - the character must be shifted upwards • 'b' - the character is to be shifted downward. b. The number of characters in the key will determine the number of positions to shift. c. The given text variable will only have characters from the ASCII table (values between 32 and 126). d. If the key is invalid (contains characters other than a and b or an empty string) or the text is invalid (empty string), no encryption will happen and the function returns the original text. e. The key will loop through again to accommodate the additional text characters if the text has more characters than the key. Brute force solutions will not be accepted and an iterative…Using C++ Comments are very helpful If header files are added please provide them The Caesar cipher is one of the earliest known and simplest ciphers. It is a type of substitution cipher in which each letter in the plaintext is 'shifted' a certain number of places down the alphabet. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z U V W X Y Z A B C D E F G H I J K L M N O P Q R S T H E L L O W O R L D Normal Text B Y F F I Q I R M X Encrypted Text You are tasked to create an encryption program which takes a key word. The keyword will fill the first part of the shifted array. The remaining letters will fill the end of the array. It should look like this: Key=”TOY A B C D E F G H I J K L M N O P Q R S T U V W X Y Z T O Y A B C D E F G H I J K L M N P Q R S U V W X Z You should have an interactive menu with the following options: 1…What will be the ciphered text corresponding to “ALGORITHM” if running key cipher is used for encryption with keyword as “DATASTRUCTURE”? a) LDJOZOBBK b) DLZOJBKBO c) ZOLDJBKBO d) OLZBJDKBO
- Write a Python code that does the following: Generate a private and public key to use in RSA encryption Allow the user to enter the value of y and c Using RSA to recover x by decrypting y with his own private key sK Hash x using MD5 to get the key k Recover the plaintext by Decrypting c using the key k.Let M be the plaintext message M = MALAYSIA and the private key, K || ISSOGOOD a) Represent your plaintext binary number as a form of a block, using the DES encryption technique (2 equal blocks). b) Using the initial permutation (table is provided below), please provide your plaintext output. Initial Permutation Initial Permutation 58 50 42 34 26 18 10 02 60 52 44 36 28 20 12 04 62 54 46 38 30 22 14 06 64 56 48 40 32 24 16 08 57 49 41 33 25 17 09 01 59 51 43 35 27 19 11 03 61 53 45 37 29 21 13 05 63 55 47 39 31 23 15 071- A simple encryption method is being used to encrypt a small number (called the secret number). The method by which this encryption works is as follows: I. Choose a random seed number II. Calculate the key by multiplying the seed with the secret under modulus 7 III. Finally, multiply the key with the secret to get the encrypted secret
- 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…1. a) Implement Playfair Cipher to get the ciphertext. Here, plaintext and key is given. Plaintext = "i will miss leading university", Key = "CSE".C++ Can you write a program to Implement Affine Cipher, and shows the result like Enter the message = world Message is = world Encrypted Message is = ZBKSU Decrypted Message is = CUXRJ