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[npm-url]: https://www.npmjs.com/package/ed448-js
[npm-img]: https://img.shields.io/npm/v/ed448-js
[coveralls-url]: https://coveralls.io/github/Iskander508/Ed448-js?branch=master
[coveralls-img]: https://coveralls.io/repos/Iskander508/Ed448-js/badge.svg?branch=master&service=github
[downloads-url]: https://www.npmjs.com/package/ed448-js
[downloads-img]: https://img.shields.io/npm/dm/ed448-js.svg

Pure JavaScript/TypeScript implementation of the Ed448 elliptic curve (RFC 8032) for EdDSA signature. Uses the jsbn library for big integer operations. Uses jssha for SHAKE256 hash calculation.

Installation

Using npm:

npm install ed448-js

or yarn:

yarn add ed448-js

Then include it in your code:

``ts
import createEd448 from "ed448-js";
`

Usage

`ts
const Ed448 = createEd448();
`

$3

Calculate public key from a provided private key

`ts
const privateKey = crypto.randomFillSync(new Uint8Array(57));
const publicKey = Ed448.getPublicKey(privateKey);
`

The private key can be any random generated byte-array of length 57

$3

Calculate the EdDSA signature.
The result is represented as plain number array (length: 114). It can be converted using Buffer.from, or Uint8Array.from`.

$3

Verify the EdDSA signature.