AIM: Write the program that encrypts and decrypts a given message using the Vigenère Cipher encryption algorithm. The message to be encrypted must be given by the user as program input. Each student is free to use the programming language that suits him. Required documents: The program code A print screen of program output after execution.
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- A safe has 5 locks v,w,x,y,z all of which must be unlocked for the safe to open The keys to the locks are distributed among five executives in the following manner: i. A has keys for locks v and x; ii.B has keys for locks v and y; iii.c has keys for locks w and y; iv.D has keys for locks x and z; v.Ehas keys for locks v and Z. vi.Find all the combinations of executives that can open the safe. Write an expression vii.f(A,B,C,D,E)which specifies when the safe can be opened as a function of which viii. Executives are present.Text Encryption Encryption plays an important role in protecting messages that are transmitted across the network. There are many symmetric and asymmetric encryption techniques that can be used in order to encrypt text messages. Some of these techniques are Caesar, Rows-Columns Transposition, Rail- fence, and Playfair cipher encryption as well as advance encryption algorithms. In this project, you are required to write a code that is capable of encrypting any given text (or text file) into a cipher text using any two different methods. You should prompt the user to choose the method that they would like to encrypt their text from a given list. Challenge: develop your code to decrypt the cipher text that is encrypted above Example: Assume the text TO SERVE AND TO PROTECT is required to be encrypted using Row-Column with the password ALERT Then the text message in Rows-Columns Transposition will become: TVTTSAPCOEOEENRTRDOX. The same text message in Rail-fence with depth of 4 would…PYTHON!!!!!! Modify the scripts of Projects 1 and 2 to encrypt and decrypt entire files of text. Project 1: 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 < ord('a'): cipherValue = ord('z') - (distance - \ (ordValue - ord('a')) - 1) plainText += chr(cipherValue) print plainText Project 2: """ File: encrypt.py Project 4.3 Encypts a text file. The inputs are the names of the input file and the output file and the distance value. The encrypted code is witten to a new file. """ plainText = input("Enter a one-word, lowercase message: ") distance = int(input("Enter the distance value: ")) code = "" for ch in plainText: ordValue = ord(ch)…
- 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.Simple Encryption. Write a java program that reads from a file specified by the user and encrypt the content of the file using a simple shifting technique. Also, ask the user to input the shift size. Output the encrypted message to another file whose filename is also provided by the user. For example, Shift size: 1 Message read from the file: Hello Encrypted message: IfmmpWrite in C sharp programming Write a program that encodes and decodes a string using given encryption key (cipher). The key consists of a sequence of characters. The encoding/decoding is done by performing XOR (exclusive or) operation over the first letter of the string with the first of the key, the second – with the second, etc. When the last key character is reached, the next is the first.
- An employee uses the following coding logic for the company’s resource access: String result = authenticate( . . . ) ; if(result.equals (ACCESS DENY) ) // do stuff after authentication fails e l s e // do stuff after authentication succeeds Suppose values returned by the authenticate function include ACCESS OK and ACCESS DENY. Is there a security flaw in the program? If so, explain and rewrite the code.Students are required to create a Python program that performs customized Caesar encryption/decryption, as follows: A- The program should have a main menu, through which the user can choose whether he wants to encrypt a text or decrypt it.B- If the user chose to encrypt plaintext, he will be asked to enter his ID, which is also the name of the input file (i.e. if student ID is 199999, then the input file name should be 199999.txt).The user should not enter the file extension (i.e. .txt), instead, the program should append the extension to the ID automatically.C- The input file must contain the following information:- Student full name- Student ID- Student Age D- After that, if the file does not exist, the program should warn the user about it. If the file exists, the program must import the data from the input file using a function.E- The user then will be asked to choose an operation: Encryption, Decryption, or Exit.1. Encryption: the encryption process should be done through a group…I need help with this question please! You have been hired to develop the One-Time Pad cipher for a company. You can use Java in the development. Your implementation must consist of the following two functions: Encrypt(plaintext, key) and Decrypt(ciphertext, key). Encrypt function returns the ciphertext of the input plaintext, and Decrypt function returns the plaintext of the input ciphertext. The plaintext and ciphertext only consist of capital letters from 'A' to 'Z' and some spaces. You can also use pseudo random number function to generate the key in the program (in ideal scenario, we need to use the genuine random number generator). Note that, the key should be at least as long as the plaintext/ciphertext. Please show your code. Please show screenshots of the demo for both encryption and decryption.
- Program Requirements:You will develop a program capable of encrypt and decrypting text using Caesar cipher. In order to do this, you will be required to implement several functions, specified in the template provided.Once complete, your programs main() method should do the following:1. Prompt users to select a mode (encrypt or decrypt).2. Check if the mode the user entered is valid. If not, continue to prompt the user until a valid mode is selected.3. Prompt the user for the message they would like to encrypt or decrypt.4. Encrypt or decrypt the message as appropriate and print the output.5. Prompt the user whether they would like to encrypt or decrypt another message.6. Check if the user has entered a valid input (y/n) If not, continue to prompt the user until they enter a valid response. Depending upon the response you should either:a. End the program if the user selects no.b. Proceed directly to step 2 if the user says yes.You should use a loop to keep the programming running if the…Program Requirements:You will develop a program capable of encrypt and decrypting text using Caesar cipher. In order to do this, you will be required to implement several functions, specified in the template provided.Once complete, your programs main() method should do the following:1. Prompt users to select a mode (encrypt or decrypt).2. Check if the mode the user entered is valid. If not, continue to prompt the user until a valid mode is selected.3. Prompt the user for the message they would like to encrypt or decrypt.4. Encrypt or decrypt the message as appropriate and print the output.5. Prompt the user whether they would like to encrypt or decrypt another message.6. Check if the user has entered a valid input (y/n) If not, continue to prompt the user until they enter a valid response. Depending upon the response you should either:a. End the program if the user selects no.b. Proceed directly to step 2 if the user says yes.You should use a loop to keep the programming running if the…Program Requirements:You will develop a program capable of encrypt and decrypting text using Caesar cipher. In order to do this, you will be required to implement several functions, specified in the template provided.Once complete, your programs main() method should do the following:1. Prompt users to select a mode (encrypt or decrypt).2. Check if the mode the user entered is valid. If not, continue to prompt the user until a valid mode is selected.3. Prompt the user for the message they would like to encrypt or decrypt.4. Encrypt or decrypt the message as appropriate and print the output.5. Prompt the user whether they would like to encrypt or decrypt another message.6. Check if the user has entered a valid input (y/n) If not, continue to prompt the user until they enter a valid response. Depending upon the response you should either:a. End the program if the user selects no.b. Proceed directly to step 2 if the user says yes.You should use a loop to keep the programming running if the…