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tests/integration: separate crypto tests

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This commit is contained in:
Daniel Cousens 2016-08-13 11:42:53 +10:00
parent ddea2d2296
commit f2ecbeb90f
2 changed files with 50 additions and 40 deletions
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41
test/integration/crypto.js
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@ -11,46 +11,7 @@ var ecurve = require('ecurve')
var secp256k1 = ecurve.getCurveByName('secp256k1') var secp256k1 = ecurve.getCurveByName('secp256k1')
describe('bitcoinjs-lib (crypto)', function () { describe('bitcoinjs-lib (crypto)', function () {
it('can generate a single-key stealth address', function () { it('can recover a BIP32 parent private key from the parent public key, and a derived, non-hardened child private key', function () {
var G = secp256k1.G
var n = secp256k1.n
function stealthSend (Q) {
var noncePair = bitcoin.ECPair.makeRandom()
var e = noncePair.d
var eQ = Q.multiply(e) // shared secret
var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded()))
var cG = G.multiply(c)
var Qprime = Q.add(cG)
return {
shared: new bitcoin.ECPair(null, Qprime),
nonce: noncePair.Q
}
}
function stealthReceive (d, P) {
var dP = P.multiply(d) // shared secret
var c = bigi.fromBuffer(bitcoin.crypto.sha256(dP.getEncoded()))
return new bitcoin.ECPair(d.add(c).mod(n))
}
// receiver private key
var receiver = bitcoin.ECPair.fromWIF('5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss')
var stealthS = stealthSend(receiver.Q) // public, done by sender
// ... sender now reveals nonce to receiver
var stealthR = stealthReceive(receiver.d, stealthS.nonce) // private, done by receiver
// and check that we derived both sides correctly
assert.equal(stealthS.shared.getAddress(), stealthR.getAddress())
})
// TODO
it.skip('can generate a dual-key stealth address', function () {})
it("can recover a parent private key from the parent's public key and a derived non-hardened child private key", function () {
function recoverParent (master, child) { function recoverParent (master, child) {
assert(!master.keyPair.d, 'You already have the parent private key') assert(!master.keyPair.d, 'You already have the parent private key')
assert(child.keyPair.d, 'Missing child private key') assert(child.keyPair.d, 'Missing child private key')

49
test/integration/stealth.js Normal file
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@ -0,0 +1,49 @@
/* global describe, it */
var assert = require('assert')
var bigi = require('bigi')
var bitcoin = require('../../')
var ecurve = require('ecurve')
var secp256k1 = ecurve.getCurveByName('secp256k1')
describe('bitcoinjs-lib (crypto)', function () {
it('can generate a single-key stealth address', function () {
var G = secp256k1.G
var n = secp256k1.n
function stealthSend (Q) {
var noncePair = bitcoin.ECPair.makeRandom()
var e = noncePair.d
var eQ = Q.multiply(e) // shared secret
var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded()))
var cG = G.multiply(c)
var Qprime = Q.add(cG)
return {
shared: new bitcoin.ECPair(null, Qprime),
nonce: noncePair.Q
}
}
function stealthReceive (d, P) {
var dP = P.multiply(d) // shared secret
var c = bigi.fromBuffer(bitcoin.crypto.sha256(dP.getEncoded()))
return new bitcoin.ECPair(d.add(c).mod(n))
}
// receiver private key
var receiver = bitcoin.ECPair.fromWIF('5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss')
var stealthS = stealthSend(receiver.Q) // public, done by sender
// ... sender now reveals nonce to receiver
var stealthR = stealthReceive(receiver.d, stealthS.nonce) // private, done by receiver
// and check that we derived both sides correctly
assert.equal(stealthS.shared.getAddress(), stealthR.getAddress())
})
// TODO
it.skip('can generate a dual-key stealth address', function () {})
})