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Beginner guide to ascii based encryption implemented in Python

This is just a simple encryption algorithms that can be cool when it comes to understanding and exploring how does encryption works, but not seriously used to handle security on real life circumstances

To get started with repo you might have to clone or download the repository just as shown below;

git clone https://github.com/Kalebu/ascii-encryption-python

If you're new to ascii encryption, this simple involving converting the alphabetics to their ascii numerical value and using a secret number to add or substract from their real value and then turning back into characters as encrypted one.

For instance

Encrypting a -> 97 -> 97 (+|-) secret_number -> new characerLets say our secret number is 5a -> 97 -> 97 + 5 -> fDecrypting To descrypt we need to know the secret number otherwise we wont be able todo it sof -> 102 -> 102 (+|-) secret number -> decrypted characterSince we know the serect number is 5f -> 102 -> 102 - 5> a

In this repository I have implemented two simple function just do that, which take a textual input of any size and then encrypt it using ascii value based on your secret number and then it will return back encrypted text.

Samewise to decryption, you are going to specify the secret number and then it will recieve your encrypted text input and then render to you decrypted text output

This Python script provides simple ASCII-based encryption and decryption functionalities. The code has been improved to enhance key handling, error checking, and overall robustness.

• Thekey parameter now accepts both strings and bytes, providing more flexibility for different types of keys.
• The key is automatically encoded if it is provided as a string.

• The script now handles non-ASCII characters more gracefully.

• Error checks have been added to ensure that both the text and the key are not empty.

• A modulo operation has been introduced to prevent overflow issues during character shifting. This ensures that the character values stay within the valid ASCII range.

fromitertoolsimportcycledefencrypt(text,key='0'):# ... (implementation details)defdecrypt(text,key='0'):# ... (implementation details)# Example Usage:original_message="Hello, World!"encryption_key="secretkey"encrypted_message=encrypt(original_message,encryption_key)print(f"Encrypted:{encrypted_message}")decrypted_message=decrypt(encrypted_message,encryption_key)print(f"Decrypted:{decrypted_message}")Demo------------```python>>>fromalgorithmsimportencrypt ,decrypt>>>army_text="Throw the missiles at 9pm">>>encrypt(army_text,key=10)'^r|y\x81*~ro*ws}}svo}*k~*Czw'>>>decrypt('^r|y\x81*~ro*ws}}svo}*k~*Czw',key=10)'Throw the missiles at 9pm'

Now keep explore it by testing it with various input text to see how you can twist it to your own use

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All the credits tokalebu