Added Polyalphabetic cipher #12425
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Added Polyalphabetic cipher #12425
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tianyizheng02
requested changes
Dec 30, 2024
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- This is not a Python file. Valid Python files must end with a
.pyfile extension. - This file isn't in any existing directory. If we were to merge this PR, this file should belong in the
ciphersdirectory. - What kind of polyalphabetic cipher is this? Is this a Vigenere cipher? You didn't include any explanation of the algorithm or any sources.
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| plaintext = "HELLO, WORLD!" | ||
| key = "KEY" | ||
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| ciphertext = encrypt(plaintext, key) | ||
| print("Encrypted Text:", ciphertext) | ||
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| decrypted_text = decrypt(ciphertext, key) | ||
| print("Decrypted Text:", decrypted_text) |
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Main function code should be in an if __name__ == "__main__": block
tianyizheng02
added
the
awaiting changes
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Closing awaiting_changes PRs to prepare for Hacktoberfest |
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Describe your change:
This pull request adds an implementation of the Polyalphabetic Cipher, a classical cryptographic technique that uses multiple substitution alphabets for encryption and decryption. The implementation includes both encryption and decryption functions, supporting cyclic use of a key to determine letter shifts. Non-alphabetic characters are preserved during processing.
Reference
For more details on the Polyalphabetic Cipher, refer to the Wikipedia page: https://en.wikipedia.org/wiki/Polyalphabetic_cipher
Checklist: