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
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- In a special case of a permutation cipher, we take a message, M, and write its letters in an s× t table, in a row-major fashion, and then let the ciphertext be a column-major listing of the entries in the table. For example, to encrypt the message ATTACKATDAWN, using a 3 × 4 table, we would write the message as ATTA CKAT DAWN and then write down the ciphertext as ACDTKATAWATN. The secret key in this cryptosystem is the pair (s, t). How is decryption done in this cryptosystem? Also, how hard would it be to attack this cryptosystem using a ciphertext-only attack?Affine Cipher is an example of a Monoalphabetic substitution cipher. The encryption process is substantially mathematical done by using the following formula: C = (P ∗ ?1 + ?2) mod 26. Where k1, k2 are two integers representing the key (selected randomly), C is the ciphertext value, and P is the plaintext value. Where C and P integers with values between 0 and 25. 1) Write an Octave programme to implement this system, run your programme using the Plaintext: “the quick brown fox jumped over the lazy dog”. Show the obtained ciphertext with the selected values of the keys k1 & k2. 2) Given that the plaintext “s” mapped to ciphertext “W”, plaintext “x” mapped to ciphertext “Z” when encrypted with Affine Cipher. Determine, mathematically, the values for the two keys K1 and K2. I need an octave code for the first part of this question, that i can just copy and paste. In addition, to an explanation of the steps done to…Affine Cipher is an example of a Monoalphabetic substitution cipher. The encryption process is substantially mathematical done by using the following formula: C = (P ∗ ?1 + ?2) mod 26. Where k1, k2 are two integers representing the key (selected randomly), C is the ciphertext value, and P is the plaintext value. Where C and P integers with values between 0 and 25. Write an Octave programme to implement this system, run your programme using the Plaintext: “the quick brown fox jumped over the lazy dog”. Show the obtained ciphertext with the selected values of the keys k1 & k2. Given that the plaintext “s” mapped to ciphertext “W”, plaintext “x” mapped to ciphertext “Z” when encrypted with Affine Cipher. Determine, mathematically, the values for the two keys K1 and K2.
- In a public key, cryptosystem using RSA algorithm, user uses two prime numbers 5 and 7. He chooses 11 as Encryption key, find out decryption key. What will be the cipher text, if the plaintext is 2? Decrypt the cipher text, what will be the value of plain text?You are given the following parameters in RSA cryptosystem: p = 11, q = 13, e = 13 a) Find the integer d. b) List down the public key and private key. You need to encrypt the plaintext message, M = OF. c) Convert this message to value according to ASCII table. To encrypt this message, you can either combine the value, or separate it into the blocks of 2 digits (Hint: it must satisfy the condition M < n). d) Encrypt and decrypt the message OF. e) If the decimal value (not character) of ciphertext is 188267, decrypt this value and convert it to an appropriate message according to the ASCII table.Consider the code below. Identify all statements that are true about the code. Select all that apply. protocol MessageSecurity { func encrypt(message: String) -> String func decrypt(message: String) -> String}struct SecureIsh : MessageSecurity { func encrypt(message: String) -> String { let split = message.components(separatedBy: " ") let ished = split.map({ $0 + "ish"}) return ished.joined(separator: " ") } func decrypt(message: String) -> String { let split = message.components(separatedBy: " ") let notIshed = split.map({ $0.dropLast(3)}) return notIshed.joined(separator: " ") }}struct SecureMessenger { var security: MessageSecurity mutating func assignSecurity(security: MessageSecurity) { self.security = security } func send(message: String, to: String) { // code for sending a message } func read(message: String, from: String) { // code for reading message }} Group…
- Suppose your RSA public key is PK: {n, e} = {13861, 37}. Your friend sends you a ciphertext C = 9908. But unfortunately you have forgotten your private key, now you have to crack it yourself.a) Write down a possible condition of factors p and q.p= q=b) What is your private key SK: {d}?d=c) What is the plaintext of your friend’s message?The plaintext M =d) Suppose the plaintext M is a 12-digit number consisting of a prefix “19” and 1234567890. What is the corresponding ciphertext? Since M is greater than n, you only need to encrypt four digits at a time. Ignore redundant zeros. e.g., 0001 = 1. The result should contain three integers.The ciphertext C0 =Construct the Playfair matrix using the keyword SECRETKEY and then encrypt the message “thisisourfirsttest”. A) cl:fr:fr:mw:si:pb:es:cs:es B) cl:rf:rf:mw:si:pb:es:sc:es C) cl:fr:fr:mw:si:pb:es:sc:es D) cl:fr:fr:mw:si:pb:es:sc:seWrite a Java Program for encrypting of a file using AES and find the hash value in client side. Verify the Data Confidentiality and Integrity in Server side.
- write a program in python as implementation of decryption of affine cipher. output should be:encrypted message is:....decrypted message is:..... plaint text: cryptologya coefficient: 3b coefficient: 1Substitution 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).IN JAVA PROGRAMMING LANGUAGE PLEASE , DO THE ENCRYPTION AND DECRYPTION FOR THIS CIPHER BUT USING THIS SOLUTION IN THE IMAGE AND NOT THE ONES ON THE INTERNET PLEASE I WANT THE RESULT OF ENCRYPTION TO BE THE SAME AS THE IMAGE AND FOR THE DECRYPTION TO GIVE THE SAME ORIGINAL MESSAGE