trackthis-ecdsa

ed25519 signature generation and verification

Install

``sh
npm install --save trackthis-ecdsa
`

Examples

$3

`js
const lib = require('trackthis-ecdsa');
const seed = lib.createSeed();
const keypair = await lib.createKeyPair(seed);
const msg = Buffer.from('hello there');
const sig = await keypair.sign(msg);

console.log(await keypair.verify(sig, msg)); // true
`

$3

`js
const lib = require('trackthis-ecdsa');
const fs = require('fs');
const seed = lib.createSeed();
const keypair = await lib.createKeyPair();

fs.writeFileSync('keys.json', JSON.stringify({
publicKey: keypair.publicKey.toString('base64'),
secretKey: keypair.secretKey.toString('base64'),
});
`

$3

`js
const lib = require('trackthis-ecdsa');
const fs = require('fs');

const base64keys = require('./keys.json');
const keypair = lib.keyPairFrom({
publicKey: Buffer.from(base64keys.publicKey, 'base64'),
secretKey: Buffer.from(base64keys.secretKey, 'base64'),
});
`

API

$3

Generates 32-byte seed using Math.random. Using a different random-generator
which is cryptographically secure is strongly advised.

$3

Generates a keypair containing the .sign and .verify functions

$3

Generates a keypair from the provided 32-byte seed with the following
properties:

- arguments:
- seed - a 32-byte byffer
- returns:
- keypair.publicKey - A 32-byte public key as a buffer
- keypair.secretKey - A 64-byte secret key as a buffer
- keypair.sign - Function to sign a message using the keypair
- keypair.verify - Function to verify a signature using the keypair

$3

Sign a message using the given keypair.

- arguments:
- msg - A buffer representing the message
- publicKey - A 32-byte public key as a buffer
- secretKey - A 64-byte secret key as a buffer
- returns:
- signature` - A 64-byte buffer

$3

TODO

$3

TODO

$3

TODO