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167 lines
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HTML
167 lines
8.2 KiB
HTML
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><div class="ui vertical accordion"><div class="title"><div class="ui list"><div class="item"><i class="dropdown icon"></i><a href="ComposableObservableStore.html">ComposableObservableStore</a></div></div></div><div class="content"><ul class='methods'><li data-type='method'><a href="ComposableObservableStore.html#getFlatState">getFlatState</a></li><li data-type='method'><a href="ComposableObservableStore.html#updateStructure">updateStructure</a></li></ul></div></li></div><div class="ui vertical accordion"><div class="title"><div class="ui list"><div class="item"><i class="dropdown icon"></i><a href="EdgeEncryptor.html">EdgeEncryptor</a></div></div></div><div class="content"><ul class='methods'><li data-type='method'><a href="EdgeEncryptor.html#decrypt">decrypt</a></li><li data-type='method'><a href="EdgeEncryptor.html#encrypt">encrypt</a></li></ul></div></li></div><div class="ui vertical accordion"><div class="title"><div class="ui list"><div class="item"><i class="dropdown icon"></i><a href="TokenRatesController.html">TokenRatesController</a></div></div></div><div class="content"><ul class='methods'><li data-type='method'><a href="TokenRatesController.html#fetchExchangeRate">fetchExchangeRate</a></li><li data-type='method'><a href="TokenRatesController.html#updateExchangeRates">updateExchangeRates</a></li></ul></div></li></div><div class="ui vertical accordion"><div class="title"><div class="ui list"><div class="item"><i class="inverted dropdown icon"></i><a href="module.exports_module.exports.html">exports</a></div></div></div></li></div></ul><h3>Global</h3><ul><li><a href="global.html#blacklistedDomainCheck">blacklistedDomainCheck</a></li><li><a href="global.html#cleanContextForImports">cleanContextForImports</a></li><li><a href="global.html#config">config</a></li><li><a href="global.html#connectToAccountManager">connectToAccountManager</a></li><li><a href="global.html#doctypeCheck">doctypeCheck</a></li><li><a href="global.html#documentElementCheck">documentElementCheck</a></li><li><a href="global.html#initializePopup">initializePopup</a></li><li><a href="global.html#initialState">initialState</a></li><li><a href="global.html#logStreamDisconnectWarning">logStreamDisconnectWarning</a></li><li><a href="global.html#redirectToPhishingWarning">redirectToPhishingWarning</a></li><li><a href="global.html#restoreContextAfterImports">restoreContextAfterImports</a></li><li><a href="global.html#setupControllerConnection">setupControllerConnection</a></li><li><a href="global.html#setupInjection">setupInjection</a></li><li><a href="global.html#setupStreams">setupStreams</a></li><li><a href="global.html#setupWeb3Connection">setupWeb3Connection</a></li><li><a href="global.html#shouldInjectWeb3">shouldInjectWeb3</a></li><li><a href="global.html#suffixCheck">suffixCheck</a></li></ul>
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<div id="main">
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<h1 class="page-title">edge-encryptor.js</h1>
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<section>
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<article>
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<pre class="prettyprint source linenums"><code>const asmcrypto = require('asmcrypto.js')
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const Unibabel = require('browserify-unibabel')
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/**
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* A Microsoft Edge-specific encryption class that exposes
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* the interface expected by eth-keykeyring-controller
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*/
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class EdgeEncryptor {
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/**
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* Encrypts an arbitrary JavaScript object to cypher text
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*
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* @param {string} password Password used to unlock a cryptographic key
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* @param {Object} dataObject Data to encrypt
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* @returns {Object} Object containing cypher text, generation vectors, and salt
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*/
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encrypt (password, dataObject) {
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var salt = this._generateSalt()
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return this._keyFromPassword(password, salt)
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.then(function (key) {
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var data = JSON.stringify(dataObject)
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var dataBuffer = Unibabel.utf8ToBuffer(data)
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var vector = global.crypto.getRandomValues(new Uint8Array(16))
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var resultbuffer = asmcrypto.AES_GCM.encrypt(dataBuffer, key, vector)
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var buffer = new Uint8Array(resultbuffer)
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var vectorStr = Unibabel.bufferToBase64(vector)
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var vaultStr = Unibabel.bufferToBase64(buffer)
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return JSON.stringify({
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data: vaultStr,
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iv: vectorStr,
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salt: salt,
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})
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})
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}
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/**
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* Decrypts an arbitrary JavaScript object from cypher text
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*
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* @param {string} password Password used to unlock a cryptographic key
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* @param {string} text Cypher text of an encrypted JavaScript object
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* @returns {Promise<Object>} Promise resolving to copy of decrypted JavaScript object
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*/
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decrypt (password, text) {
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const payload = JSON.parse(text)
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const salt = payload.salt
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return this._keyFromPassword(password, salt)
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.then(function (key) {
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const encryptedData = Unibabel.base64ToBuffer(payload.data)
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const vector = Unibabel.base64ToBuffer(payload.iv)
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return new Promise((resolve, reject) => {
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var result
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try {
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result = asmcrypto.AES_GCM.decrypt(encryptedData, key, vector)
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} catch (err) {
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return reject(new Error('Incorrect password'))
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}
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const decryptedData = new Uint8Array(result)
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const decryptedStr = Unibabel.bufferToUtf8(decryptedData)
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const decryptedObj = JSON.parse(decryptedStr)
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resolve(decryptedObj)
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})
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})
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}
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/**
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* Retrieves a cryptographic key using a password
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*
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* @private
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* @param {string} password Password used to unlock a cryptographic key
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* @param {string} salt Random base-64 data
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* @returns {Promise<Object>} Promise resolving to a derived key
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*/
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_keyFromPassword (password, salt) {
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var passBuffer = Unibabel.utf8ToBuffer(password)
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var saltBuffer = Unibabel.base64ToBuffer(salt)
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return new Promise((resolve) => {
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var key = asmcrypto.PBKDF2_HMAC_SHA256.bytes(passBuffer, saltBuffer, 10000)
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resolve(key)
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})
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}
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/**
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* Generates random base-64 encoded data
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*
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* @private
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* @returns {string} Randomized base-64 encoded data
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*/
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_generateSalt (byteCount = 32) {
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var view = new Uint8Array(byteCount)
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global.crypto.getRandomValues(view)
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var b64encoded = btoa(String.fromCharCode.apply(null, view))
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return b64encoded
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}
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}
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module.exports = EdgeEncryptor
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</code></pre>
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</article>
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</section>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Wed Apr 18 2018 17:21:38 GMT-0400 (EDT) using the radgrad jsdoc theme. Derived from docdash.
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