From 111f31bb531440a5e3e9baa79a4af5f6359bbb10 Mon Sep 17 00:00:00 2001
From: Franck Royer <franck@status.im>
Date: Mon, 7 Mar 2022 07:50:33 +1100
Subject: [PATCH] Remove node implementation

---
 .../{symmetric/index.ts => symmetric.ts}      |  2 +-
 src/lib/waku_message/symmetric/browser.ts     | 51 -------------------
 src/lib/waku_message/symmetric/node.ts        | 36 -------------
 3 files changed, 1 insertion(+), 88 deletions(-)
 rename src/lib/waku_message/{symmetric/index.ts => symmetric.ts} (94%)
 delete mode 100644 src/lib/waku_message/symmetric/browser.ts
 delete mode 100644 src/lib/waku_message/symmetric/node.ts

diff --git a/src/lib/waku_message/symmetric/index.ts b/src/lib/waku_message/symmetric.ts
similarity index 94%
rename from src/lib/waku_message/symmetric/index.ts
rename to src/lib/waku_message/symmetric.ts
index d29e2cb9b9..b9cac71c56 100644
--- a/src/lib/waku_message/symmetric/index.ts
+++ b/src/lib/waku_message/symmetric.ts
@@ -1,4 +1,4 @@
-import { randomBytes, subtle } from "../../crypto";
+import { randomBytes, subtle } from "../crypto";
 
 export const KeySize = 32;
 export const IvSize = 12;
diff --git a/src/lib/waku_message/symmetric/browser.ts b/src/lib/waku_message/symmetric/browser.ts
deleted file mode 100644
index 25e9b5f791..0000000000
--- a/src/lib/waku_message/symmetric/browser.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-import { IvSize } from "./index";
-
-declare global {
-  interface Window {
-    msCrypto?: Crypto;
-  }
-  interface Crypto {
-    webkitSubtle?: SubtleCrypto;
-  }
-}
-
-const crypto = window.crypto || window.msCrypto;
-const subtle: SubtleCrypto = crypto.subtle || crypto.webkitSubtle;
-
-const Algorithm = { name: "AES-GCM", length: 128 };
-
-if (subtle === undefined) {
-  throw new Error("Failed to load Subtle CryptoAPI");
-}
-
-export async function encrypt(
-  iv: Buffer | Uint8Array,
-  key: Buffer,
-  clearText: Buffer
-): Promise<Buffer> {
-  return subtle
-    .importKey("raw", key, Algorithm, false, ["encrypt"])
-    .then((cryptoKey) =>
-      subtle.encrypt({ iv, ...Algorithm }, cryptoKey, clearText)
-    )
-    .then(Buffer.from);
-}
-
-export async function decrypt(
-  iv: Buffer,
-  key: Buffer,
-  cipherText: Buffer
-): Promise<Buffer> {
-  return subtle
-    .importKey("raw", key, Algorithm, false, ["decrypt"])
-    .then((cryptoKey) =>
-      subtle.decrypt({ iv, ...Algorithm }, cryptoKey, cipherText)
-    )
-    .then(Buffer.from);
-}
-
-export function generateIv(): Uint8Array {
-  const iv = new Uint8Array(IvSize);
-  crypto.getRandomValues(iv);
-  return iv;
-}
diff --git a/src/lib/waku_message/symmetric/node.ts b/src/lib/waku_message/symmetric/node.ts
deleted file mode 100644
index 42707db9a8..0000000000
--- a/src/lib/waku_message/symmetric/node.ts
+++ /dev/null
@@ -1,36 +0,0 @@
-import { createCipheriv, createDecipheriv, randomBytes } from "crypto";
-
-import { IvSize, TagSize } from "./index";
-
-const Algorithm = "aes-256-gcm";
-
-export async function encrypt(
-  iv: Buffer | Uint8Array,
-  key: Buffer,
-  clearText: Buffer
-): Promise<Buffer> {
-  const cipher = createCipheriv(Algorithm, key, iv);
-  const a = cipher.update(clearText);
-  const b = cipher.final();
-  const tag = cipher.getAuthTag();
-  return Buffer.concat([a, b, tag]);
-}
-
-export async function decrypt(
-  iv: Buffer,
-  key: Buffer,
-  data: Buffer
-): Promise<Buffer> {
-  const tagStart = data.length - TagSize;
-  const cipherText = data.slice(0, tagStart);
-  const tag = data.slice(tagStart);
-  const decipher = createDecipheriv(Algorithm, key, iv);
-  decipher.setAuthTag(tag);
-  const a = decipher.update(cipherText);
-  const b = decipher.final();
-  return Buffer.concat([a, b]);
-}
-
-export function generateIv(): Buffer {
-  return randomBytes(IvSize);
-}