seele-sdk-javascript
Version:
seele's javascript sdk
116 lines (103 loc) • 3.21 kB
JavaScript
const createKeccakHash = require('keccak')
const RLP = require('rlp')
const secp256k1 = require('secp256k1')
let bip32 = require('bip32')
let bip39 = require('bip39')
let bip44 = require('bip44-constants'), BIP44 = {}
let Base58 = require('base-58')
const key = require('./key')
bip44.splice(450, 0, [ 0x800001c8, 'SEELE', 'Seele' ]) // right before 'AE'
for ( var c of bip44 ) { BIP44[c[1]] = { name: c[2], index: c[0] - 2147483648 } }
bip44 = BIP44
const maxShard = 4
/** @namespace*/
var wallet = {
/**
* @method
* @param {string} word A string of mnemonic words
* @return {object} Account object containing 4 keypairs, one from each of 4 shards
* @example
* wallet.fromWord()
* // returns
*/
fromWord: function accountFromWord(word){
// check word validity
return this.fromSeed(bip39.mnemonicToSeedSync(word).toString('hex'))
},
/**
* @method
* @param {string} seed A string of seed in base 58
* @return {object} Account object containing 4 keypairs, one from each of 4 shards
* @example
* wallet.fromSeed()
* // returns
*/
fromSeed: function accountFromSeed(seed){
// check seed validity
var seedB = Buffer.from(seed, 'hex')
var account = []
var root = bip32.fromSeed(seedB);
for ( var shard = 1 ; shard <= maxShard ; shard++ ){
var info = {
shard: null,
privateKey: null,
address: null
}, i = 0;
while( info.shard != shard ){
var path = `m/44'/${bip44.SEELE.index}'/0'/0/${i}`
var node = root.derivePath(path)
var priv = '0x'+node.privateKey.toString('hex')
var addr = key.addof(priv)
var shrd = key.shard(addr)
info.shard = shrd
info.privateKey = priv
info.address = addr
info.index = i
i++;
}
account.push(info)
}
return account
},
/**
* @method
* @param {string} word A string of mnemonic words
* @param {number} depth The number of addresses to discover
* @return {object} Object containing shard distribution and address by index
* @example
* wallet.distWord()
* // returns
*/
distWord: function distributionFromWord(word, depth){
return this.distSeed(bip39.mnemonicToSeedSync(word), depth)
},
/**
* @method
* @param {string} seed A string of seed in base 58
* @param {number} depth The number of addresses to discover
* @return {object} Object containing shard distribution and address by index
* @example
* wallet.distSeed()
* // returns
*/
distSeed: function distributionFromSeed(seed, depth){
var i = 0, shards = []
var root = bip32.fromSeed(seed);
while ( i < depth ) {
var path = `m/44'/${bip44.SEELE.index}'/0'/0/${i}`
// console.log(path);
var node = root.derivePath(path)
var priv = '0x'+node.privateKey.toString('hex')
var addr = key.addof(priv)
var shrd = key.shard(addr)
shards.push({
'index': i,
'shard': shrd,
'address': addr
})
i++;
}
return shards;
}
}
module.exports = wallet