This program must accept as input from the user a value between 0 and 255 to be used as the secret key, the name of the input file and the name of the output file. No line in the input file should contain more than 4096 characters. After the user would have provided their secret key, this program should read and perform an XOR cipher on the contents of the input file and write the result to the output file. If the input file has already been encrypted and the identical secret key that was used to perform the initial encryption is provided, then the contents of the output file should be deciphered into its original plain text. can you please provide me with the algorithm on how to go about doing this work.
This is a fairly obvious homework question so you should at least make an effort to do the work yourself. If you do not understand how to apply XOR to a string of characters then you should read this page[^]. Similarly, reading and writing files is a basic part of the language that can be learned by reading these pages[^].
One of these days I'm going to think of a really clever signature.