SJCL ecc encrypt/decrypt

crypt.js

var data = {
    herp: "derp"
};

//Make the keys.
var temp = sjcl.ecc.elGamal.generateKeys(384, 1);

//to encrypt with publickey:
var pubjson = temp.pub.serialize();
var point = sjcl.ecc.curves["c" + pubjson.curve].fromBits(pubjson.point);

var publicKey = new sjcl.ecc.elGamal.publicKey(pubjson.curve, point.curve, point);
var symkey_obj = publicKey.kem(0);

var ciphertext = sjcl.encrypt(symkey_obj.key, JSON.stringify(data));
var message = JSON.stringify({ 'ciphertext': ciphertext, 'encrypted_key': symkey_obj.tag });
// and message gets saved off

//to decrypt with privatekey/recovering "message"

var cipherMessage = JSON.parse(message);
var secjson = temp.sec.serialize();
var ex = sjcl.bn.fromBits(secjson.exponent);

var privatekey_obj = new sjcl.ecc.elGamal.secretKey(secjson.curve, sjcl.ecc.curves["c" +secjson.curve], ex);

var symkey = privatekey_obj.unkem(cipherMessage.encrypted_key);
var decryptedData = sjcl.decrypt(symkey, cipherMessage.ciphertext);

Are you using the sjcl ECC Branch for this gist ? Because ... frombits (line 10) is not working with the latest sjcl ecc branch version ...

I'm also interested in an updated version of this. serialize() is no longer part of the ecc library

var sjcl = require('sjcl');

var data = {
    herp: "derp"
};

var curve = sjcl.ecc.curves.c384;
var temp = sjcl.ecc.elGamal.generateKeys(curve, 1);
var pub = temp.pub.get();
var sec = temp.sec.get();

var pubObj = new sjcl.ecc.elGamal.publicKey(curve, new sjcl.ecc.point(curve, sjcl.bn.prime.p384.fromBits(pub.x), sjcl.bn.prime.p384.fromBits(pub.y)));
var secObj = new sjcl.ecc.elGamal.secretKey(curve, sjcl.bn.prime.p384.fromBits(sec));

var ciphertext = sjcl.encrypt(pubObj, JSON.stringify(data));
var message = JSON.stringify({'ciphertext': ciphertext});

var cipherMessage = JSON.parse(message);
var decryptedData = sjcl.decrypt(secObj, cipherMessage.ciphertext);
console.log(decryptedData);