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authorCsaba Solya <csaba.solya@gmail.com>2018-02-22 21:39:32 +0800
committerCsaba Solya <csaba.solya@gmail.com>2018-02-22 21:39:32 +0800
commit5ec311ba3e01bd9b0a9ff447fd7639d22a7b3d9c (patch)
tree6f7d21ac75b62605f58049b09e18504b4abc2e22 /app
parent16754fa30744df8b3b3edc0e5229db29f3ad23ec (diff)
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add edge support
Diffstat (limited to 'app')
-rw-r--r--app/scripts/background.js8
-rw-r--r--app/scripts/edge-encryptor.js69
2 files changed, 77 insertions, 0 deletions
diff --git a/app/scripts/background.js b/app/scripts/background.js
index 6bf7707e8..7bececba1 100644
--- a/app/scripts/background.js
+++ b/app/scripts/background.js
@@ -15,6 +15,7 @@ const MetamaskController = require('./metamask-controller')
const firstTimeState = require('./first-time-state')
const setupRaven = require('./setupRaven')
const setupMetamaskMeshMetrics = require('./lib/setupMetamaskMeshMetrics')
+const EdgeEncryptor = require('./edge-encryptor')
const STORAGE_KEY = 'metamask-config'
const METAMASK_DEBUG = 'GULP_METAMASK_DEBUG'
@@ -30,6 +31,12 @@ global.METAMASK_NOTIFIER = notificationManager
const release = platform.getVersion()
const raven = setupRaven({ release })
+// browser check if it is Edge - https://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
+// Internet Explorer 6-11
+const isIE = !!document.documentMode
+// Edge 20+
+const isEdge = !isIE && !!window.StyleMedia
+
let popupIsOpen = false
// state persistence
@@ -78,6 +85,7 @@ function setupController (initState) {
initState,
// platform specific api
platform,
+ encryptor: isEdge ? new EdgeEncryptor() : undefined,
})
global.metamaskController = controller
diff --git a/app/scripts/edge-encryptor.js b/app/scripts/edge-encryptor.js
new file mode 100644
index 000000000..9d6ac37b3
--- /dev/null
+++ b/app/scripts/edge-encryptor.js
@@ -0,0 +1,69 @@
+const asmcrypto = require('asmcrypto.js')
+const Unibabel = require('browserify-unibabel')
+
+class EdgeEncryptor {
+
+ encrypt (password, dataObject) {
+
+ var salt = this._generateSalt()
+ return this.keyFromPassword(password, salt)
+ .then(function (key) {
+
+ var data = JSON.stringify(dataObject)
+ var dataBuffer = Unibabel.utf8ToBuffer(data)
+ var vector = global.crypto.getRandomValues(new Uint8Array(16))
+ var resultbuffer = asmcrypto.AES_GCM.encrypt(dataBuffer, key, vector)
+
+ var buffer = new Uint8Array(resultbuffer)
+ var vectorStr = Unibabel.bufferToBase64(vector)
+ var vaultStr = Unibabel.bufferToBase64(buffer)
+ return JSON.stringify({
+ data: vaultStr,
+ iv: vectorStr,
+ salt: salt,
+ })
+ })
+ }
+
+ decrypt (password, text) {
+
+ const payload = JSON.parse(text)
+ const salt = payload.salt
+ return this.keyFromPassword(password, salt)
+ .then(function (key) {
+ const encryptedData = Unibabel.base64ToBuffer(payload.data)
+ const vector = Unibabel.base64ToBuffer(payload.iv)
+ return new Promise((resolve, reject) => {
+ var result
+ try {
+ result = asmcrypto.AES_GCM.decrypt(encryptedData, key, vector)
+ } catch (err) {
+ return reject(new Error('Incorrect password'))
+ }
+ const decryptedData = new Uint8Array(result)
+ const decryptedStr = Unibabel.bufferToUtf8(decryptedData)
+ const decryptedObj = JSON.parse(decryptedStr)
+ resolve(decryptedObj)
+ })
+ })
+ }
+
+ keyFromPassword (password, salt) {
+
+ var passBuffer = Unibabel.utf8ToBuffer(password)
+ var saltBuffer = Unibabel.base64ToBuffer(salt)
+ return new Promise((resolve) => {
+ var key = asmcrypto.PBKDF2_HMAC_SHA256.bytes(passBuffer, saltBuffer, 10000)
+ resolve(key)
+ })
+ }
+
+ _generateSalt (byteCount = 32) {
+ var view = new Uint8Array(byteCount)
+ global.crypto.getRandomValues(view)
+ var b64encoded = btoa(String.fromCharCode.apply(null, view))
+ return b64encoded
+ }
+}
+
+module.exports = EdgeEncryptor