mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-10-23 11:46:13 +02:00
79 lines
2.5 KiB
JavaScript
79 lines
2.5 KiB
JavaScript
const ethUtil = require('ethereumjs-util')
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const Transaction = require('ethereumjs-tx')
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const configManager = require('./config-manager-singleton')
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module.exports = IdManagement
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function IdManagement (opts) {
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if (!opts) opts = {}
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this.keyStore = opts.keyStore
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this.derivedKey = opts.derivedKey
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this.hdPathString = "m/44'/60'/0'/0"
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this.getAddresses = function () {
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return keyStore.getAddresses(this.hdPathString).map(function (address) { return '0x' + address })
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}
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this.signTx = function (txParams) {
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// normalize values
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txParams.to = ethUtil.addHexPrefix(txParams.to)
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txParams.from = ethUtil.addHexPrefix(txParams.from)
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txParams.value = ethUtil.addHexPrefix(txParams.value)
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txParams.data = ethUtil.addHexPrefix(txParams.data)
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txParams.gasLimit = ethUtil.addHexPrefix(txParams.gasLimit || txParams.gas)
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txParams.nonce = ethUtil.addHexPrefix(txParams.nonce)
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var tx = new Transaction(txParams)
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// sign tx
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var privKeyHex = this.exportPrivateKey(txParams.from)
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var privKey = ethUtil.toBuffer(privKeyHex)
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tx.sign(privKey)
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// Add the tx hash to the persisted meta-tx object
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var txHash = ethUtil.bufferToHex(tx.hash())
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var metaTx = configManager.getTx(txParams.metamaskId)
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metaTx.hash = txHash
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configManager.updateTx(metaTx)
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// return raw serialized tx
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var rawTx = ethUtil.bufferToHex(tx.serialize())
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return rawTx
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}
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this.signMsg = function (address, message) {
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// sign message
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var privKeyHex = this.exportPrivateKey(address)
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var privKey = ethUtil.toBuffer(privKeyHex)
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var msgSig = ethUtil.ecsign(new Buffer(message.replace('0x', ''), 'hex'), privKey)
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var rawMsgSig = ethUtil.bufferToHex(concatSig(msgSig.v, msgSig.r, msgSig.s))
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return rawMsgSig
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}
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this.getSeed = function () {
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return this.keyStore.getSeed(this.derivedKey)
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}
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this.exportPrivateKey = function (address) {
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var privKeyHex = ethUtil.addHexPrefix(this.keyStore.exportPrivateKey(address, this.derivedKey, this.hdPathString))
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return privKeyHex
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}
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}
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function pad_with_zeroes (number, length) {
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var my_string = '' + number
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while (my_string.length < length) {
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my_string = '0' + my_string
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}
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return my_string
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}
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function concatSig (v, r, s) {
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r = pad_with_zeroes(ethUtil.fromSigned(r), 64)
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s = pad_with_zeroes(ethUtil.fromSigned(s), 64)
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r = ethUtil.stripHexPrefix(r.toString('hex'))
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s = ethUtil.stripHexPrefix(s.toString('hex'))
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v = ethUtil.stripHexPrefix(ethUtil.intToHex(v))
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return ethUtil.addHexPrefix(r.concat(s, v))
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}
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