basic elliptic curve crypto for React Native
npm install react-native-eccbasic elliptic curve crypto for React Native
this module is used by Tradle
``js
import * as ec from 'react-native-ecc'
import { Buffer } from 'buffer'
// if you want to be able to find your keys
// next time, make sure to use the same service ID
ec.setServiceID('be.excellent.to.each.other')
// optional
// ec.setAccessGroup('dsadjsakd.com.app.awesome.my')
// this library allows you to sign 32 byte hashes (e.g. sha256 hashes)
const msg = new Buffer('hey ho')
// check ec.curves for supported curves
const curve = 'p256'
ec.keyPair(curve, function (err, key) {
// pub tested for compatibility with npm library "elliptic"
const pub = key.pub
console.log('pub', key.pub.toString('hex'))
// look up the key later like this:
// const key = ec.keyFromPublic(pub)
key.sign({
data: msg,
algorithm: 'sha256'
}, function (err, sig) {
// signatures tested for compatibility with npm library "elliptic"
console.log('sig', sig.toString('hex'))
key.verify({
algorithm: 'sha256',
data: msg,
sig: sig
}, function (err, verified) {
console.log('verified:', verified)
})
})
})
``