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

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Installation

npm install js-ktc

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Usage

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

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Limitations

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

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Development

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