Intro

Ciphering CLI Tool is tool that let you encode or decode text use next ciphers:

• Caesar cipher
• Atbash cipher
• ROT-8 as variation of ROT-13

How to use

CLI tool accepts 3 options (short alias and full name):

1. -c, --config: config for ciphers Config is a string with pattern {XY(-)}n, where:

• X is a cipher mark:
  • C is for Caesar cipher (with shift 1)
  • A is for Atbash cipher
  • R is for ROT-8 cipher
• Y is an encode or decode flag (mandatory for Caesar ciphers and ROT-8 ciphers and not required for Atbash ciphers)
  • 1 is for encoding
  • 0 is for decoding

2. -i, --input: a path to input file (optional)
3. -o, --output: a path to output file (optional)

   For example: config "C1-C1-R0-A" means "encode by Caesar cipher => encode by Caesar cipher => decode by ROT-8 => use Atbash"

Usage example:

---

Basic usage: node index.js -c "C1" -i "input.txt" -o "output.txt"

input.txt: This is secret. Message about "_" symbol!

output.txt: Uijt jt tfdsfu. Nfttbhf bcpvu "_" tzncpm!

Use yarn: yarn ciphering -c "C1-C1-A-R1" -i "input.txt" -o "output.txt"

input.txt: This is secret. Message about "_" symbol!

output.txt: Myxn xn nbdobm. Tbnnfzb ferlm "_" nhteru!

Use npm: npm run ciphering -- -c "C0-A-R0" -i "input.txt" -o "output.txt"

input.txt: This is secret. Message about "_" symbol!

output.txt: Zlka ka aoqboz. Goaasmo sreyz "_" augreh!