A JavaScript component for BIP32(hierarchical deterministic keys).
npm i --save @crabas0npm/neque-ex-dolorem
example:
var HDKey = require('@crabas0npm/neque-ex-dolorem')
var seed = 'a0c42a9c3ac6abf2ba6a9946ae83af18f51bf1c9fa7dacc4c92513cc4dd015834341c775dcd4c0fac73547c5662d81a9e9361a0aac604a73a321bd9103bce8af'
var hdkey = HDKey.fromMasterSeed(new Buffer(seed, 'hex'))
console.log(hdkey.privateExtendedKey)
// => 'xprv9s21ZrQH143K2SKJK9EYRW3Vsg8tWVHRS54hAJasj1eGsQXeWDHLeuu5hpLHRbeKedDJM4Wj9wHHMmuhPF8dQ3bzyup6R7qmMQ1i1FtzNEW'
console.log(hdkey.publicExtendedKey)
// => 'xpub661MyMwAqRbcEvPmRAmYndzERhyNux1GoHzHxgzVHMBFkCro3kbbCiDZZ5XabZDyXPj5mH3hktvkjhhUdCQxie5e1g4t2GuAWNbPmsSfDp2'
Creates an hdkey
object from a master seed buffer. Accepts an optional versions
object.
var seed = 'a0c42a9c3ac6abf2ba6a9946ae83af18f51bf1c9fa7dacc4c92513cc4dd015834341c775dcd4c0fac73547c5662d81a9e9361a0aac604a73a321bd9103bce8af'
var hdkey = HDKey.fromMasterSeed(new Buffer(seed, 'hex'))
Creates an hdkey
object from a xprv
or xpub
extended key string. Accepts an optional versions
object.
var key = 'xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j'
var hdkey = HDKey.fromExtendedKey(key)
or
var key = 'xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt'
var hdkey = HDKey.fromExtendedKey(key)
Creates an hdkey
object from an object created via hdkey.toJSON()
.
Derives the hdkey
at path
from the current hdkey
.
var seed = 'fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542'
var hdkey = HDKey.fromMasterSeed(Buffer.from(seed, 'hex'))
var childkey = hdkey.derive("m/0/2147483647'/1")
console.log(childkey.privateExtendedKey)
// -> "xprv9zFnWC6h2cLgpmSA46vutJzBcfJ8yaJGg8cX1e5StJh45BBciYTRXSd25UEPVuesF9yog62tGAQtHjXajPPdbRCHuWS6T8XA2ECKADdw4Ef"
console.log(childkey.publicExtendedKey)
// -> "xpub6DF8uhdarytz3FWdA8TvFSvvAh8dP3283MY7p2V4SeE2wyWmG5mg5EwVvmdMVCQcoNJxGoWaU9DCWh89LojfZ537wTfunKau47EL2dhHKon"
Signs the buffer hash
with the private key using secp256k1
and returns the signature as a buffer.
Verifies that the signature
is valid for hash
and the hdkey
's public key using secp256k1
. Returns true
for valid, false
for invalid. Throws if the hash
or signature
is the wrong length.
Serializes the hdkey
to an object that can be JSON.stringify()
ed.
var seed = 'fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542'
var hdkey = HDKey.fromMasterSeed(Buffer.from(seed, 'hex'))
console.log(hdkey.toJSON())
// -> {
// xpriv: 'xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U',
// xpub: 'xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB'
// }
Getter/Setter of the hdkey
's private key, stored as a buffer.
Getter/Setter of the hdkey
's public key, stored as a buffer.
Getter/Setter of the hdkey
's xprv
, stored as a string.
Getter/Setter of the hdkey
's xpub
, stored as a string.
- https://github.com/bitcoinjs/bitcoinjs-lib/blob/master/src/hdnode.js
- http://bip32.org/
- http://blog.richardkiss.com/?p=313
- https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki
- http://bitcoinmagazine.com/8396/deterministic-wallets-advantages-flaw/
MIT