Function encrypt_message

ciphers/trifid_cipher.py:124–166

encrypt_message =============== Encrypts a message using the trifid_cipher. Any punctuatuion chars that would be used should be added to the alphabet. PARAMETERS ---------- * `message`: The message you want to encrypt. * `alphabet` (optional): The c

(
    message: str, alphabet: str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ.", period: int = 5
)

def encrypt_message(
    message: str, alphabet: str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ.", period: int = 5
) -> str:
    """
    encrypt_message
    ===============

    Encrypts a message using the trifid_cipher. Any punctuatuion chars that
    would be used should be added to the alphabet.

    PARAMETERS
    ----------

    *   `message`: The message you want to encrypt.
    *   `alphabet` (optional): The characters to be used for the cipher .
    *   `period` (optional): The number of characters you want in a group whilst
        encrypting.

    >>> encrypt_message('I am a boy')
    'BCDGBQY'

    >>> encrypt_message(' ')
    ''

    >>> encrypt_message('   aide toi le c  iel      ta id  era    ',
    ... 'FELIXMARDSTBCGHJKNOPQUVWYZ+',5)
    'FMJFVOISSUFTFPUFEQQC'

    """
    message, alphabet, character_to_number, number_to_character = __prepare(
        message, alphabet
    )

    encrypted_numeric = ""
    for i in range(0, len(message) + 1, period):
        encrypted_numeric += __encrypt_part(
            message[i : i + period], character_to_number
        )

    encrypted = ""
    for i in range(0, len(encrypted_numeric), 3):
        encrypted += number_to_character[encrypted_numeric[i : i + 3]]
    return encrypted


def decrypt_message(