fractionated-morse.md

Fractionated Morse

A doubling substitution cipher based on the Morse cipher.

Cipher behavior information

• Case sensitive? ❌
• Deterministic? ✓
• Alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 .,:;?-_()'=+/@
• Characters not in alphabet will be: omitted or throwing an error (default)

Default options object

The options are the same for both methods, encode and decode

const options = {
  keyAlphabet: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', // Order of letters to encode/decode the input. Must contain 26 unique characters
  failOnUnknownCharacter: true, // Should an error be thrown when a character is not included in the alphabet
}

Usage

Encoding

Default

import { fractionatedMorse } from 'cipher-collection'


console.log(fractionatedMorse.encode('Hello World')) // AGTCDHOTQODTCJ

With custom alphabet

import { fractionatedMorse } from 'cipher-collection'

const options = { alphabet: 'BCADEFGHIJKLMNOPQRSTUVWXYZ' }

console.log(fractionatedMorse.encode('Hello World', options)) // BGTADHOTQODTAJ

Without error throwing

import { fractionatedMorse } from 'cipher-collection'

const silentFailOptions = {
  failOnUnknownCharacter: false,
}

// Characters will be omitted
console.log(fractionatedMorse.encode('€€€Hello World', silentFailOptions)) //AGTCDHOTQODTCJ

Decoding

Default

import { fractionatedMorse } from 'cipher-collection'


console.log(fractionatedMorse.decode('AGTCDHOTQODTCJ')) // Hello World

With custom alphabet

import { fractionatedMorse } from 'cipher-collection'

const options = { alphabet: 'BCADEFGHIJKLMNOPQRSTUVWXYZ' }

console.log(fractionatedMorse.decode('BGTADHOTQODTAJ', options)) // Hello World

Without error throwing

import { fractionatedMorse } from 'cipher-collection'

const silentFailOptions = {
  failOnUnknownCharacter: false,
}

console.log(fractionatedMorse.decode('€€€AGTCDHOTQODTCJ', silentFailOptions)) //Hello World