Ciphers

Playing around with Caesar Ciphers. User will input a message that they wish to encrypt when prompted.

Once a message is inputted, users will have the choice to choose an encryption key (positive or negative integer) using either "y", "Y", or "n", "N".

If users input "y"/"Y": They will be prompted to choose a key (positive or negative integer).

If users input "n"/"N": The default encryption key will be used.

Python Cipher

Uses the Ascii chart (not limited to only letters)
Uses STDIN to get user input

This program will also decrypt the encrypted text.

Java Cipher

Uses the Ascii chart (not limited to only letters)
Uses STDIN to get user input:

1st input is the message to encrypt
2nd input is y or n
If y is chosen, supply a positive integer for the 3rd argument, otherwise there is no 3rd argument
This program will also decrypt the encrypted text.

C/C++ Cipher

To compile, run make
Uses the Ascii chart (not limited to only letters)
Uses command line arguments:

1st is the program name
2nd is "y" or "n" (case insensitive) to indicate if the user would like to choose the key
If the user chooses "y": the third argument must be an integer (only positive integers work. Negative integers will result in the key being 0, hence there will be no shifting)
If the user chooses "n": No third argument is needed

After the user runs the program with command line arguments, they will be prompted to enter a message they would like to encrypt.

If no message is inputted, program ends.
If message is provided, Users will be shown the original message, the key, and the encrypted message.
This program will also decrypt the encrypted text.

Javascript Cipher

Uses the Ascii chart (not limited to only letters)
Use a javascript compiler (online) if you want to run it.
function is called "cipher" and it takes in 2 parameters: a message and a key
Enter the message in the html script when the javascript method is called and enter a key.