72 lines
2.9 KiB
JavaScript
72 lines
2.9 KiB
JavaScript
var assert = require('assert')
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var bigi = require('bigi')
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var bitcoin = require('../../')
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describe('bitcoinjs-lib (advanced)', function() {
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it('can sign a bitcoin message', function() {
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var key = bitcoin.ECKey.fromWIF('5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss')
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var message = 'This is an example of a signed message.'
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var signature = bitcoin.Message.sign(key, message)
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assert.equal(signature.toString('base64'), 'G9L5yLFjti0QTHhPyFrZCT1V/MMnBtXKmoiKDZ78NDBjERki6ZTQZdSMCtkgoNmp17By9ItJr8o7ChX0XxY91nk=')
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})
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it('can verify a bitcoin message', function() {
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var address = '1HZwkjkeaoZfTSaJxDw6aKkxp45agDiEzN'
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var signature = 'HJLQlDWLyb1Ef8bQKEISzFbDAKctIlaqOpGbrk3YVtRsjmC61lpE5ErkPRUFtDKtx98vHFGUWlFhsh3DiW6N0rE'
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var message = 'This is an example of a signed message.'
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assert(bitcoin.Message.verify(address, signature, message))
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})
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it('can generate a single-key stealth address', function() {
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var receiver = bitcoin.ECKey.fromWIF('5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss')
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// XXX: ephemeral, must be random (and secret to sender) to preserve privacy
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var sender = bitcoin.ECKey.fromWIF('Kxr9tQED9H44gCmp6HAdmemAzU3n84H3dGkuWTKvE23JgHMW8gct')
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var G = bitcoin.ECKey.curve.G
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var d = receiver.d // secret (receiver only)
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var Q = receiver.pub.Q // shared
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var e = sender.d // secret (sender only)
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var P = sender.pub.Q // shared
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// derived shared secret
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var eQ = Q.multiply(e) // sender
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var dP = P.multiply(d) // receiver
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assert.deepEqual(eQ.getEncoded(), dP.getEncoded())
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var c = bigi.fromBuffer(bitcoin.crypto.sha256(eQ.getEncoded()))
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var cG = G.multiply(c)
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// derived public key
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var QprimeS = Q.add(cG)
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var QprimeR = G.multiply(d.add(c))
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assert.deepEqual(QprimeR.getEncoded(), QprimeS.getEncoded())
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// derived shared-secret address
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var address = new bitcoin.ECPubKey(QprimeS).getAddress().toString()
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assert.equal(address, '1EwCNJNZM5q58YPPTnjR1H5BvYRNeyZi47')
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})
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// TODO
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it.skip('can generate a dual-key stealth address', function() {})
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it('can create an OP_RETURN transaction', function() {
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var key = bitcoin.ECKey.fromWIF("L1uyy5qTuGrVXrmrsvHWHgVzW9kKdrp27wBC7Vs6nZDTF2BRUVwy")
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var tx = new bitcoin.TransactionBuilder()
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var data = new Buffer('cafedeadbeef', 'hex')
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var dataScript = bitcoin.scripts.dataOutput(data)
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tx.addInput("aa94ab02c182214f090e99a0d57021caffd0f195a81c24602b1028b130b63e31", 0)
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tx.addOutput(dataScript, 1000)
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tx.sign(0, key)
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assert.equal(tx.build().toHex(), '0100000001313eb630b128102b60241ca895f1d0ffca2170d5a0990e094f2182c102ab94aa000000006a4730440220578f9df41a0e5c5052ad6eef46d005b41f966c7fda01d5f71e9c65026c9025c002202e0159ea0db47ca1bf7713e3a08bbba8cc4fdd90a2eff12591c42049c7cad6c30121029f50f51d63b345039a290c94bffd3180c99ed659ff6ea6b1242bca47eb93b59fffffffff01e803000000000000086a06cafedeadbeef00000000')
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})
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})
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