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perf: move encryption/decryption to a separate thread

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Dragory 2021-10-09 14:21:23 +03:00
parent 0b337a13a4
commit b7c7e002eb
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16 changed files with 310 additions and 147 deletions
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35
backend/src/utils/crypt.ts
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@ -1,5 +1,6 @@
import crypto from "crypto";
import { spawn, Worker } from "threads";
import "../loadEnv";
import type { CryptFns } from "./cryptWorker";
if (!process.env.KEY) {
// tslint:disable-next-line:no-console
@ -8,27 +9,19 @@ if (!process.env.KEY) {
}
const KEY = process.env.KEY;
const ALGORITHM = "aes-256-gcm";
let workerPromise: Promise<CryptFns> | null = null;
export function encrypt(str) {
// Based on https://gist.github.com/rjz/15baffeab434b8125ca4d783f4116d81
const iv = crypto.randomBytes(16);
const cipher = crypto.createCipheriv(ALGORITHM, KEY, iv);
let encrypted = cipher.update(str, "utf8", "base64");
encrypted += cipher.final("base64");
return `${iv.toString("base64")}.${cipher.getAuthTag().toString("base64")}.${encrypted}`;
async function getWorker(): Promise<CryptFns> {
if (workerPromise == null) {
workerPromise = spawn(new Worker("./cryptWorker")) as unknown as Promise<CryptFns>;
}
return workerPromise;
}
export function decrypt(encrypted) {
// Based on https://gist.github.com/rjz/15baffeab434b8125ca4d783f4116d81
const [iv, authTag, encryptedStr] = encrypted.split(".");
const decipher = crypto.createDecipheriv(ALGORITHM, KEY, Buffer.from(iv, "base64"));
decipher.setAuthTag(Buffer.from(authTag, "base64"));
let decrypted = decipher.update(encryptedStr, "base64", "utf8");
decrypted += decipher.final("utf8");
return decrypted;
export async function encrypt(data: string) {
return (await getWorker()).encrypt(data, KEY);
}
export async function decrypt(data: string) {
return (await getWorker()).decrypt(data, KEY);
}