Perform the Encryption using the Vigenere cipher for the following: Messege= "discovery", and Key="google".
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Perform the Encryption using the Vigenere cipher for the following: Messege= "discovery", and Key="google".
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- Introductory: The Caesar Cipher technique is one of the earliest and simplest methods of encryption techniques. It is simply a type of substitution cipher, i.e., each letter of a given text is replaced by a letter some fixed number of positions down the alphabet. For example, with a shift of 1, A would be replaced by B, B would become C, and so on. The method is apparently named after Julius Caesar, who apparently used it to communicate with his officials. Thus, to cipher a given text we need an integer value, known as a shift which indicates the number of positions each letter of the text has been moved down. The encryption can be represented using modular arithmetic by first transforming the letters into numbers, according to the scheme, A = 0, B = 1 ,…, Z = 25. Encryption of a letter by a shift n can be described mathematically as. En(x) = (x+n) mod 26 (Encryption Phase with shift n) Write an algorithm and implement a program in C to read the data from a file (called…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) OLZBJDKBO1. a) Implement Playfair Cipher to get the ciphertext. Here, plaintext and key is given. Plaintext = "i will miss leading university", Key = "CSE".
- Python The Dan Cipher works like this: shift the first lowercase character to the right by 1, the second lowercase character to the right by 2, and so on. Characters that are not lowercase characters are not changed. Write a program that takes a string and prints the result of applying the Dan Cipher.Convert the following NFA to a DFA. For full credit, your DFA states should be labeled indicating the sets of the NFA states(e.g., q12 indicates{q1, q2}).Substitution ciphers are encryption/decryption algorithms that replace one letter or number with another. The first attested use of a substitution cipher in military affairs was by Julius Caesar, described by him in Gallic Wars (cf. Kahn pp83-84). In caesar cipher , you replace each letter by 3rd letter on. If it is out of bound (later than Z), then round to the head (letter A) and continue the shift. For example:meet me after the toga party PHHW PH DIWHU WKH WRJD SDUWB Please write a program in Java to implement the Caesar Cipher: a. Implement the encryption algorithm. Ask the user to input one all lower case normal sentence (called plaintext) using the nextLine method, and then output the encrypted text (called ciphertext). b. Implement the decryption algorithm. Ask the user to input one encrypted sentence (i.e. ciphertext) using the nextLine method, and then output the decrypted text (i.e. plaintext).
- Q7: Using the same notations as in the lecture, e.g., p and q are the two primes and e and d are the public key and private key, respectively, p = 5, q = 13 and e= 5. Using the phi(n) that you found in question 6 and the Extended Euclidean algorithm yields d = 29. What is the cipher text C when encrypting M = 17?Ex/ 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) ?Encode the number using the given public key. Encode the number M = 14 using the public key n = 77 and e = 13. Assume you are encoding the number using the RSA cryptosystem. Note: You can use the Modular Exponentiation calculator to help with the calculation. a 46 (mod 77), encoded number = 46 47 (mod 77), encoded number = 47 48 (mod 77), encoded number = 48 d. 49 (mod 77), encoded number = 49
- Example 2 Enter message to be encrypted: Dèyè mòn, gen mòn. Enter step size: -1 ORIGINAL MESSAGE Dèyè mòn, gen mòn. ENCRYPTED MESSAGE Cçxç lim, fdm lim. Enter message to be encrypted: Dèyè mòn, gen mòn. Enter step size: 0 ORIGINAL MESSAGE Dèyè mòn, gen mòn. ENCRYPTED MESSAGE Dèyè mòn, gen mòn. Enter message to be encrypted: QUIT Example 3 Enter message to be encrypted: Perfer et obdura, dolor hic tib: proderit olim. Enter step size: 8 ORIGINAL MESSAGE Perfer et obdura, dolor hic tibi proderit olim. ENCRYPTED MESSAGE Xmznmz m| wjl)zi, lwtwz pąk |qją xzwlmzą| wtqu. Enter message to be encrypted: QUITProblem 1.Write computer programs for the Substitution Cipher based on Z29 which is corresponding to 26 alphabetic characters (0 - 25), space (26), and “, ” (27) “.”(28).The key is a random permutation π on Z29. Write down encryption and decryptionprograms. For the encryption, the plaintext and the key need to be input. To inputthe key, use the permutation of 0, 1, . . . , 28. The plaintext should be input as Englishletters. The out put will be the ciphertext which is also English letters. Select aparagraph of text which contains more than 25 words (I don’t think any two peoplewill choose a same paragraph if they choose independently) and encrypt it using yourencryption algorithm. Then use your decryption program to check the correctness.You can use Java. Record your plaintext, ciphertext and the key π in your answer sheet.Encrypt Caesar cipher is a kind of substitution cipher. Instead of using a substitution table, the alphabets are rotated by a number (a key). For example, if the key is 3, plaintext alphabet a would become d, and plaintext alphabet z would become c. Write a program that implements the Caesar Cipher. You program will first prompt for the key and then for the mode (E for encryption and D for decryption) and finally for the message to be encrypted / decrypted. Your program will then output the encryption / decryption message. For this question, the input message may consists of any character, the program should encrypt or small letter case a to z only. All other characters should be kept intact after encryption or decryption.