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Szyfr ROT13

Opis problemu

Szyfrowanie

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def encrypt_rot13(message: str) -> str:
    encrypted = ""

    for letter in message:
        encrypted_letter = ord(letter) + 13

        if encrypted_letter > ord("z"):
            encrypted_letter = ord("a") + encrypted_letter - ord("z")

        encrypted += chr(encrypted_letter)

    return encrypted

message = "computerscience"

encrypted = encrypt_rot13(message)

print(encrypted)

Deszyfrowanie

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def decrypt_rot13(message: str) -> str:
    decrypted = ""

    for letter in message:
        decrypted_letter = ord(letter) - 13

        if decrypted_letter < ord("a"):
            decrypted_letter = ord("z") - (ord("a") - decrypted_letter)

        decrypted += chr(decrypted_letter)

    return decrypted

message = "pczdihrfgpvrbpr"

decrypted = decrypt_rot13(message)

print(decrypted)