how to encrypt """ File: decrypt.py Project 4.3 Decypts a file of encrypted text. and prints the result. The other input is the distance value. """ code = raw_input("Enter the coded text: ") distance = input("Enter the distance value: ") plainText = '' for ch in code: ordValue = ord(ch) cipherValue = ordValue - distance if cipherValue

how to encrypt """ File: decrypt.py Project 4.3 Decypts a file of encrypted text. and prints the result. The other input is the distance value. """ code = raw_input("Enter the coded text: ") distance = input("Enter the distance value: ") plainText = '' for ch in code: ordValue = ord(ch) cipherValue = ordValue - distance if cipherValue

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter13: File Input And Output

Section: Chapter Questions

Problem 6PE

See similar textbooks

Similar questions

Write a script that gets from a user a paragraph of plaintext and a distance value. Then output this paragraph into an encrypted text using a Caesar cipher. Write this text to a file called 'encryptfile.txt. Then read this file and write it to a file named 'copyfile.txt' I do not know how to apply the algorithm and how to save it
Using an alias, and the range operator, and required metacharacters, display all files which begins with any letter and ends with n and second letter must be a vowel. in powershell I need the answer quickly please
Write a Python program in a .py file that implements a new encryption algorithm that includes the following: User enters a plaintext string Add 1 to each character’s numeric ASCII value. Convert it to a bit string. Shift the bits of this string one place to the left (as in MINDTAP exercise 4.5) Output the encrypted string. Reverse the process by having a user now enter an encrypted string and output the decrypted string.
Modify the scripts of Projects 1 and 2 to encrypt and decrypt entire files of text. An example of the program interface is shown below: Enter the input file name: encrypted.txt Enter the output file name: a Enter the distance value: 3 Project 1: text = (input("Please enter your text: ")) shift = int(input("Please enter the shift: ")) def circularShift(text, key): text = text.upper() cipher = "" for letter in text: shifted = ord(letter) + key if shifted < 65: shifted += 0 if shifted > 90: shifted -= 0 cipher += chr(shifted) return cipher print (circularShift(text, shift)) Project 2 text = (input("Please enter your text: ")) shift = int(input("Please enter the shift: ")) convert = -(shift) def cypher(text, key): text = text.capitalize() cipher = "" for letter in text: shifted = ord(letter) + key cipher += chr(shifted) return cipher print (cypher(text, convert))
Hi, I'm having trouble with my Python code using PyCryptdome. I need help fixing my code, I keek geting error when I try to use my public key to the decrypt my encrypted message from Crypto.PublicKey import RSA from Crypto.Cipher import AES, PKCS1_OAEP # Open the encrypted message.txt file_in = open("encrypted_message.txt", "rb") private_key_name = input("Enter file name of the private key: ") # Read the private key private_key = RSA.import_key(open("private_key.pem").read()) end_session_key, nonce, tag, ciphertext = [file_in.read(item) for item in (private_key.size_in_bytes(), 16, 16, -1)] # Use the private key to decrypt the session key cipher_rsa = PKCS1_OAEP.new(private_key) session_key = cipher_rsa.decrypt(end_session_key) # User the AES session key to decrypt the original message and print it cipher_aes = AES.new(session_key, AES.MODE_EAX, nonce) message = cipher_aes.decrypt_and_verify(ciphertext, tag) # AES user to enter a file name for storing the decrypted message…
Write a program that takes a filename as input from the user and looks for lines of the form and extract the number from each of the lines using a regular expression. Compute the average of the numbers and print out the average as an integer. Example: Enter filename: mbox.txt38549
I need to create a Transposition Cipher in Java that runs in Eclipse. The programs need to ask the user to encrypt or decrypt, read/accept a user's text file(.TXT) (NOT PLAIN TEXT), and save it as a new text file (.TXT). Please include as many comments as possible that help explains each line of code.
Professor Potter, a punning pedantic, practices puzzling her students. She has left a secret message, of unknown length, encoded in a file for you to unravel. The setup is simple: each line of the file contains one char and one non-negative integer. The key to reading the message is organizing the characters in the proper order. The integer indicates the position of the character within the message. For example: e 2 b 1 a 3 h 5 c 4 spells 'beach' when unraveled. Write a program that will: Ask the user for the name of a file Check to see that the file exists and contains some data. Open and read this file exactly once Using your MessageDecoder class, unravel and display the message Offer to do it again on another file Required classes: You will create and submit 2 classes: MessageDecoder class: Responsible for converting a scrambled message file into plain text. Contains a public method getPlainTextMessage() that returns the String object. The scrambled file must be scanned only once…
IN PYTHON: Decrypting with ascii I have a file called 'dict.txt'. This file contains over 50,000 english words. One word from this file is used as a key (we do not know which one of course). Some have capital letters. I have another file called 'decrypt.txt' which is a file containing a string of numbers i must decrypt using a key found in the 'dict.txt'. This 'decrypt.txt' file message has length of 300. My question is, since i do not know which word (from the file with the 50,000+ words) is the key I must use to decrypt the other file, how do I write a function that: loops through all possible keys from 'dict.txt' to find the one that decrypts my file 'decrypt.txt' best? Somehow i must count how many 'words' are actual words to determine which key is best and then print my final decrypted message.
Write a program to find the most common words in a file. attach snapshot of output.
implementation of Caesar Cipher Using Python Write Code: You are required to implement the Caesar Cipher encryption/decryption algorithm in Python. Remember to implement the algorithm in such a way that it takes a file as input, encrypts it and store in the current directory. This encrypted file must checkable. The implementation must have a decryption procedure which takes the encrypted file from the current directory, decrypts it and store it with some specific name in the current directory. The name should be different from the original file so that it can be verified.
I am trying to run a jar file and I get this error. Error encrypting/decrypting file net.codejava.crypto.CryptoException: Error encrypting/decrypting file Caused by: java.security.InvalidKeyException: Invalid AES key length: 17 bytes at net.codejava.crypto.CryptoUtils.doCrypto(CryptoUtils.java:57) at net.codejava.crypto.CryptoUtils.encrypt(CryptoUtils.java:27) at net.codejava.crypto.CryptoUtilsTest.main(CryptoUtilsTest.java:18) Caused by: java.security.InvalidKeyException: Invalid AES key length: 17 bytes at java.base/com.sun.crypto.provider.AESCrypt.makeSessionKey(AESCrypt.java:1329) at java.base/com.sun.crypto.provider.AESCrypt.init(AESCrypt.java:1053) at java.base/com.sun.crypto.provider.ElectronicCodeBook.init(ElectronicCodeBook.java:97) at java.base/com.sun.crypto.provider.CipherCore.init(CipherCore.java:481) at java.base/com.sun.crypto.provider.CipherCore.init(CipherCore.java:399) at java.base/com.sun.crypto.provider.AESCipher.engineInit(AESCipher.java:311) at…