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adds key to ROT ex

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waldek 2021-11-12 11:25:13 +01:00
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@ -1469,6 +1469,12 @@ if __name__ == "__main__":
To make things more interesting you can add a decode function.
Plus you could add a prompt that asks how big the shift should be (ROT13, ROT16, ...).
You can make the cypher a **lot** harder to break if you use a word (or phrase as a key).
For example, if the key is `abc` and the message is `hello world` the first letter will be offset by a ROT0 (will remain `h`).
The second letter, `e` will be offset by a ROT1 so will become `f`.
The third letter by ROT2 so will become `n`.
Now, the fourth letter will be offset again by `a` so ROT0 and will become `l`.
And so on...
# List comprehension