108 lines
3.7 KiB
JavaScript
108 lines
3.7 KiB
JavaScript
var assert = require('assert')
|
|
var bigi = require('bigi')
|
|
var bitcoin = require('../../')
|
|
var helloblock = require('helloblock-js')({
|
|
network: 'testnet'
|
|
})
|
|
|
|
describe('bitcoinjs-lib (advanced)', function() {
|
|
it('can sign a Bitcoin message', function() {
|
|
var key = bitcoin.ECKey.fromWIF('5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss')
|
|
var message = 'This is an example of a signed message.'
|
|
|
|
var signature = bitcoin.Message.sign(key, message)
|
|
assert.equal(signature.toString('base64'), 'G9L5yLFjti0QTHhPyFrZCT1V/MMnBtXKmoiKDZ78NDBjERki6ZTQZdSMCtkgoNmp17By9ItJr8o7ChX0XxY91nk=')
|
|
})
|
|
|
|
it('can verify a Bitcoin message', function() {
|
|
var address = '1HZwkjkeaoZfTSaJxDw6aKkxp45agDiEzN'
|
|
var signature = 'HJLQlDWLyb1Ef8bQKEISzFbDAKctIlaqOpGbrk3YVtRsjmC61lpE5ErkPRUFtDKtx98vHFGUWlFhsh3DiW6N0rE'
|
|
var message = 'This is an example of a signed message.'
|
|
|
|
assert(bitcoin.Message.verify(address, signature, message))
|
|
})
|
|
|
|
it('can generate a single-key stealth address', function() {
|
|
var receiver = bitcoin.ECKey.fromWIF('5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss')
|
|
|
|
// XXX: ephemeral, must be random (and secret to sender) to preserve privacy
|
|
var sender = bitcoin.ECKey.fromWIF('Kxr9tQED9H44gCmp6HAdmemAzU3n84H3dGkuWTKvE23JgHMW8gct')
|
|
|
|
var G = bitcoin.ECKey.curve.G
|
|
var d = receiver.d // secret (receiver only)
|
|
var Q = receiver.pub.Q // shared
|
|
|
|
var e = sender.d // secret (sender only)
|
|
var P = sender.pub.Q // shared
|
|
|
|
// derived shared secret
|
|
var eQ = Q.multiply(e) // sender
|
|
var dP = P.multiply(d) // receiver
|
|
assert.deepEqual(eQ.getEncoded(), dP.getEncoded())
|
|
|
|
var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded()))
|
|
var cG = G.multiply(c)
|
|
|
|
// derived public key
|
|
var QprimeS = Q.add(cG)
|
|
var QprimeR = G.multiply(d.add(c))
|
|
assert.deepEqual(QprimeR.getEncoded(), QprimeS.getEncoded())
|
|
|
|
// derived shared-secret address
|
|
var address = new bitcoin.ECPubKey(QprimeS).getAddress().toString()
|
|
|
|
assert.equal(address, '1EwCNJNZM5q58YPPTnjR1H5BvYRNeyZi47')
|
|
})
|
|
|
|
// TODO
|
|
it.skip('can generate a dual-key stealth address', function() {})
|
|
|
|
it('can create an OP_RETURN transaction', function(done) {
|
|
this.timeout(20000)
|
|
|
|
var key = bitcoin.ECKey.fromWIF("L1uyy5qTuGrVXrmrsvHWHgVzW9kKdrp27wBC7Vs6nZDTF2BRUVwy")
|
|
var address = key.pub.getAddress(bitcoin.networks.testnet).toString()
|
|
|
|
helloblock.faucet.withdraw(address, 2e4, function(err) {
|
|
if (err) return done(err)
|
|
|
|
helloblock.addresses.getUnspents(address, function(err, _, unspents) {
|
|
if (err) return done(err)
|
|
|
|
// filter small unspents
|
|
unspents = unspents.filter(function(unspent) { return unspent.value > 1e4 })
|
|
|
|
// use the oldest unspent
|
|
var unspent = unspents.pop()
|
|
|
|
var tx = new bitcoin.TransactionBuilder()
|
|
|
|
var data = new Buffer('cafedeadbeef', 'hex')
|
|
var dataScript = bitcoin.scripts.dataOutput(data)
|
|
|
|
tx.addInput(unspent.txHash, unspent.index)
|
|
tx.addOutput(dataScript, 1000)
|
|
tx.sign(0, key)
|
|
|
|
helloblock.transactions.propagate(tx.build().toHex(), function(err) {
|
|
if (err) return done(err)
|
|
|
|
// check that the message was propagated
|
|
helloblock.addresses.getTransactions(address, function(err, res, transactions) {
|
|
if (err) return done(err)
|
|
|
|
var transaction = transactions[0]
|
|
var output = transaction.outputs[0]
|
|
var dataScript2 = bitcoin.Script.fromHex(output.scriptPubKey)
|
|
var data2 = dataScript2.chunks[1]
|
|
|
|
assert.deepEqual(dataScript, dataScript2)
|
|
assert.deepEqual(data, data2)
|
|
|
|
done()
|
|
})
|
|
})
|
|
})
|
|
})
|
|
})
|
|
})
|