Javascript Keyword Transposition Cipher

An implementation of a basic keyword transposition cipher in Javascript with zero dependencies.

const C = require('js-ktc');
let ktc = new C('secret')

ktc.encrypt('CRYPTOLOGY')
// 'JHQSU XFXBQ '

ktc.decrypt('JHQSU XFXBQ')
// 'CRYPT OLOGY '

✅ Easy to use ✅ Extensible ✅ Test coverage ✅ Lots of comments (good for education) ✅ No bloat (zero dependencies) ✅ MIT license

Installation

npm install js-ktc

Usage

• Require const C = require('js-ktc');
• Initialize let ktc = new C('secret')
• Encrypt ktc.encrypt('CRYPTOLOGY')
• Decrypt ktc.decrypt('JHQSU XFXBQ')

Limitations

The basic implementation only works with A-Z though it can easily be extended to support other characters.

Development

See the CONTRIBUTING.md file for instructions on how to contribute to this project.