Support for BIP49 YPUB/UPUB

Author: plasticlobster

src/hdnode.js

@@ -64,7 +64,9 @@ HDNode.fromBase58 = function (string, networks) {
  if (Array.isArray(networks)) {
  network = networks.filter(function (x) {
  return version === x.bip32.private ||
- version === x.bip32.public
+ version === x.bip32.public ||
+ version === x.bip49.private ||
+ version === x.bip49.public
  }).pop()
 
  if (!network) throw new Error('Unknown network version')
@@ -75,7 +77,9 @@ HDNode.fromBase58 = function (string, networks) {
  }
 
  if (version !== network.bip32.private &&
- version !== network.bip32.public) throw new Error('Invalid network version')
+ version !== network.bip32.public &&
+ version !== network.bip49.private &&
+ version !== network.bip49.public) throw new Error('Invalid network version')
 
  // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ...
  var depth = buffer[4]

src/networks.js

@@ -9,6 +9,10 @@ module.exports = {
  public: 0x0488b21e,
  private: 0x0488ade4
  },
+ bip49: {
+ public: 0x049D7CB2,
+ private: 0x049D7878
+ },
  pubKeyHash: 0x00,
  scriptHash: 0x05,
  wif: 0x80
@@ -20,6 +24,10 @@ module.exports = {
  public: 0x043587cf,
  private: 0x04358394
  },
+ bip49: {
+ public: 0x044A5262,
+ private: 0x044A4E28
+ },
  pubKeyHash: 0x6f,
  scriptHash: 0xc4,
  wif: 0xef