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hello everybody today Im going to show you how we can write a substitution Cipher encryption program basically speaking what were going to do is that we have a message to hide the message we can encrypt it by replacing every instance of one character with another chosen at random using the same key we can then decrypt the message when I was at my University I took an intro to cyber security course I turned this program in as a final assignment and I did get an A on it I dont know maybe itll help you at the very least its a good exercise all right lets get started everybody we will Begin by importing the random module as well as the string module lets create a string of characters named chars whatever characters you would like to use for your encryption program list them here as a string however this can be a lot to write I think a better solution would be to import some constants from the string module Im going to include some punctuation I will import the punctuation constant