Package Exports

ecdh-es
ecdh-es/lib/browser-crypto.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (ecdh-es) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

ecdh-es

Elliptic Curve Diffie-Hellman with ephemeral-static keys implementation for NodeJS

Install

npm install --save ecdh-es

Use

var ecdh = require('ecdh-es')
  , pubkey = new Buffer('03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd', 'hex')
  , privkey = new Buffer('e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855', 'hex')

var encrypted = ecdh.encrypt(pubkey, 'Hello, world!') // -> Buffer
var decrypted = ecdh.decrypt(privkey, encrypted) // -> Buffer
// (use toString() to convert back to string message)

// Uses the secp256k1 curve and AES-128-CBC cipher by default,
// but can be overridden as follows:
var ecdh = require('ecdh-es')({
  curve_name: 'secp192k1',
  cipher_algo: 'AES-256-CBC',
  key_size: 32,
  iv_size: 16
})

Browser usage

If you're using browserify to bundle your code, you can use this package normally and everything should work the same. Note, however, that crypto-browserify (which is used as a shim for nodejs's crypto api) only support AES encryption.

If you're not using browserify, you can use the standalone bundle at dist/ecdh.min.js, which comes packaged with all of the dependencies. Including it in your page will provide global ECDH object you can use.

License

MIT