(Decrypt files) Suppose a file is encrypted using the scheme in
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- 1 Encryption (a). Write a program that will utilise AES for encrypting and decrypting the data from a file as follows. Your program should take 3 arguments from the command line as input. The first input should be either 0 or 1 referring to encryption or decryption, respectively. The second input is the key filename. The third input is the either the plaintext or encrypted filename. If the first argument is 0: your program will read an AES key from a file titled key.txt (passed as second argument) and then will read the plaintext from a file titled plain- text.txt (passed as third argument), encrypt the contents of plaintext.txt using the key and save the ciphertext in a file titled encrypted.txt. If the first argument is 1, your program should decrypt the contents of encrypted.txt. Sample Command-line Inputs: java 0 key.txt plaintext.txt java 1 key.txt encrypted.txtarrow_forwardDO NOT WRITE MAIN! Only write the function. A 50% minimum deduction will be made if main is included. No libraries or comments should be specified. (OP4) Write a function to prompt the user for the filename, open the file, and verify that it opened. If the file does not open, an error message should be printed and the user re-prompted. The function should use the string passed in for the prompt string. The function should not return until the file is open. The function prototype: void openInputFile( ifstream &, string ); ifstream& - the stream to be opened. string - the prompt to be written out to the user. Use this string when prompting the user.arrow_forward(PYTHON) Write a program that reads the student information from a tab separated values (tsv) file. The program then creates a text file that records the course grades of the students. Each row of the tsv file contains the Last Name, First Name, Midterm1 score, Midterm2 score, and the Final score of a student. A sample of the student information is provided in StudentInfo.tsv. Assume the number of students is at least 1 and at most 20. The program performs the following tasks: Read the file name of the tsv file from the user.Open the tsv file and read the student information.Compute the average exam score of each student.Assign a letter grade to each student based on the average exam score in the following scale:A: 90 =< xB: 80 =< x < 90C: 70 =< x < 80D: 60 =< x < 70F: x < 60Compute the average of each exam.Output the last names, first names, exam scores, and letter grades of the students into a text file named report.txt. Output one student per row and…arrow_forward
- Fill-in-the-Blank What happens if you open an output file and the file already exists?arrow_forward(Use DevC++) 2. Student GradeWrite a program that reads a student name followed by five test scores. The program should output the student name, the five test scores, and the average test score. Output the average test score withtwo decimal places. The data to be read is stored in a file called test.txt. The output should be stored in a file calledtestavg.out. Input: A file containing the student name and the five test scores. A sample input is:Andrew Miller 87.50 89 65.75 37 98.50 Output: The student name, the five test scores, and the average of the five test scores, saved to a file. The program needs to read a student’s first and last name and five test scores. Therefore, you need two variables to store the student name and five variables to store the five test scores. To find theaverage, you must add the five test scores and then divide the sum by 5. Thus, you need a variable to store the average test score. Furthermore, because the input data is in a file, you need an…arrow_forward(True/False): A file specification includes both a file path and a file name.arrow_forward
- Modified Programming ). (Count vowels and consonants, file input, nested-loops, switch statement) Assume that letters A, E, I, O and U are the vowels. Write a program that reads strings from a text file, one line at a time, using a while-loop. You do the following operations within each loop: • Read one line from the input file and store it in a string; Count the number of vowels and consonants (using either while-loop or for-loop) in the file string. The while-loop will terminate when the end-of-file is reached. After the loop is finished, the program displays the total number of vowels and consonants in the text file. [A text file, named “ass4_Q6_input.txt", is provided as your testing input file.]arrow_forwardPython programming: Topic: Compresion - using functional function Write a program that prints the number of palindromes in this file ..../englishWords (tips , open file first then read the content before printing)arrow_forward<<Write in Java>> - Challenge 7 File encryption is the science of writing the contents of a file in a secret code. Your encryption program should work like a filter, reading the contents of one file, modifying the data into a code, and then writing the coded contents out to a second file. The second file will be a version of the first file, but written in a secret code. Although there are complex encryption techniques, you should come up with a simple one of your own. For example, you could read the first file one character at a time, and add 10 to the character code of each character before it is written to the second file. - Challenge 8 Write a program that decrypts the file produced by the program in Programming Challenge 7. The decryption program should read the contents of the coded file, restore the data to its original state, and write it to another filearrow_forward
- (True/False): A file’s directory entry contains the file’s starting sector number.arrow_forwardIn Python do the following: 1) Reading from Files:Suppose we have a text file (‘readfile.txt’) containing the following lines:Hello!My name is Mary Summers.This is my resume.We want to read its contents into Python. Write a code that will load the entire file into a string.Please know that when you write code to open a file, the file is assumed to be in the same directory asyour program. If it is in a different directory, then you need to specify that.arrow_forwardLANGUAGE: C++ Create a program and then: Show file input (get your input from a file) File output (output to a file) File append (add to the end of a file) Also,Try to have your code handle an error if for example you try to read from a file that doesn’t exist.arrow_forward
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