This mission is the part of set. Another one - Caesar cipher encryptor .
Oh no! When we received an encrypted text we've noticed that there are some extra symbols!
Your mission is to decrypt a secret message (which consists of text, the whitespace characters and special chars like "!", "&", "?" etc.) using Caesar cipher where each letter is replaced by another that stands at a fixed distance. For example ("a b c", 3) == "d e f". Also you should ignore/delete all special characters. So the message like this ("!d! [e] &f*", -3) will be decrypted just as "a b c" and nothing more.
Input: A Secret message as a string (lowercase letters only, white spaces and special characters)
Output: The same string, but decrypted into a normal text
to_decrypt("!d! [e] &f*", -3) == "a b c" to_decrypt("x^$# y&*( (z):-)", 3) == "a b c" to_decrypt("iycfbu!@# junj%&", -16) == "simple text" to_decrypt("*$#%swzybdkxd !)(^#%dohd", -10) == "important text" to_decrypt("fgngr **&&frperg^__^", 13) == "state secret"
How it is used: For cryptography and to save important information.
0 < len(text) < 50
-26 < delta < 26
CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.
In order to install CheckiO client you'll need installed Python (version at least 3.8)
Install CheckiO Client first:
pip3 install checkio_client
Configure your tool
checkio --domain=py config --key=
Sync solutions into your local folder
(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)
checkio serv -d
Alternatevly, you can install Chrome extension or FF addon
checkio install-plugin --ff
checkio install-plugin --chromium