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Merge branch 'dev' of https://github.com/wireapp/wire-webapp into imp…
…rovements/certificate-renewal
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| /* | ||
| * Wire | ||
| * Copyright (C) 2024 Wire Swiss GmbH | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see http://www.gnu.org/licenses/. | ||
| * | ||
| */ | ||
|
|
||
| import {Encoder, Decoder} from 'bazinga64'; | ||
|
|
||
| export class EncryptedStorage { | ||
| private encryptionKey: Promise<CryptoKey>; | ||
| length = Promise.resolve(0); | ||
|
|
||
| constructor(secretKey: Uint8Array) { | ||
| this.encryptionKey = crypto.subtle.importKey('raw', secretKey, 'AES-GCM', false, ['encrypt', 'decrypt']); | ||
| } | ||
|
|
||
| async setItem(key: string, value: string) { | ||
| try { | ||
| const encryptionKey = await this.encryptionKey; | ||
| const iv = window.crypto.getRandomValues(new Uint8Array(12)); | ||
| const encryptedValue = await window.crypto.subtle.encrypt( | ||
| {name: 'AES-GCM', iv}, | ||
| encryptionKey, | ||
| Encoder.toBase64(value).asBytes, | ||
| ); | ||
| const base64Value = Encoder.toBase64(encryptedValue).asString; | ||
| window.localStorage.setItem(key, JSON.stringify({value: base64Value, iv: Array.from(iv)})); | ||
| } catch (error) { | ||
| console.error(error); | ||
| throw error; | ||
| } | ||
| } | ||
|
|
||
| async getItem(key: string) { | ||
| const entry = localStorage.getItem(key); | ||
| if (entry) { | ||
| const encryptionKey = await this.encryptionKey; | ||
| const {value, iv} = JSON.parse(entry); | ||
| const decrypted = await crypto.subtle.decrypt( | ||
| {name: 'AES-GCM', iv: new Uint8Array(iv)}, | ||
| encryptionKey, | ||
| Decoder.fromBase64(value).asBytes, | ||
| ); | ||
| return Decoder.fromBase64(Array.from(new Uint8Array(decrypted))).asString; | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| async removeItem(key: string) { | ||
| localStorage.removeItem(key); | ||
| } | ||
|
|
||
| async clear() { | ||
| localStorage.clear(); | ||
| } | ||
| async key(): Promise<null> { | ||
| return null; | ||
| } | ||
| } |
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