ciphers.fractionated_morse_cipher

Python program for the Fractionated Morse Cipher.

The Fractionated Morse cipher first converts the plaintext to Morse code, then enciphers fixed-size blocks of Morse code back to letters. This procedure means plaintext letters are mixed into the ciphertext letters, making it more secure than substitution ciphers.

http://practicalcryptography.com/ciphers/fractionated-morse-cipher/

Attributes

MORSE_CODE_DICT
MORSE_COMBINATIONS
REVERSE_DICT
plaintext

Functions

decrypt_fractionated_morse(→ str)	Decrypt a ciphertext message encrypted with Fractionated Morse Cipher.
encode_to_morse(→ str)	Encode a plaintext message into Morse code.
encrypt_fractionated_morse(→ str)	Encrypt a plaintext message using Fractionated Morse Cipher.

Module Contents

ciphers.fractionated_morse_cipher.decrypt_fractionated_morse(ciphertext: str, key: str) → str

Decrypt a ciphertext message encrypted with Fractionated Morse Cipher.

Args:

ciphertext: The ciphertext message to decrypt. key: The decryption key.

Returns:

The decrypted plaintext message.

Example:

>>> decrypt_fractionated_morse("ESOAVVLJRSSTRX","Roundtable")
'DEFEND THE EAST'

ciphers.fractionated_morse_cipher.encode_to_morse(plaintext: str) → str

Encode a plaintext message into Morse code.

Args:

plaintext: The plaintext message to encode.

Returns:

The Morse code representation of the plaintext message.

Example:

>>> encode_to_morse("defend the east")
'-..x.x..-.x.x-.x-..xx-x....x.xx.x.-x...x-'

ciphers.fractionated_morse_cipher.encrypt_fractionated_morse(plaintext: str, key: str) → str

Encrypt a plaintext message using Fractionated Morse Cipher.

Args:

plaintext: The plaintext message to encrypt. key: The encryption key.

Returns:

The encrypted ciphertext.

Example:

>>> encrypt_fractionated_morse("defend the east","Roundtable")
'ESOAVVLJRSSTRX'

ciphers.fractionated_morse_cipher.MORSE_CODE_DICT

ciphers.fractionated_morse_cipher.MORSE_COMBINATIONS = ['...', '..-', '..x', '.-.', '.--', '.-x', '.x.', '.x-', '.xx', '-..', '-.-', '-.x', '--.',...

ciphers.fractionated_morse_cipher.REVERSE_DICT

ciphers.fractionated_morse_cipher.plaintext = 'defend the east'