From 4ae52895252d763bcd5c14e960ff8d3e1da91548 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Zasso?= <targos@protonmail.com>
Date: Mon, 19 Jul 2021 13:55:53 +0200
Subject: [PATCH] crypto: support Big(U)Int64Array in getRandomValues
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Refs: https://github.com/w3c/webcrypto/issues/255
Fixes: https://github.com/nodejs/node/issues/39442

PR-URL: https://github.com/nodejs/node/pull/39443
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Zeyu Yang <himself65@outlook.com>
---
 lib/internal/crypto/random.js          |  2 --
 test/parallel/test-webcrypto-random.js | 46 ++++++++++++++------------
 2 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/lib/internal/crypto/random.js b/lib/internal/crypto/random.js
index 5ce158324851d4..c45d53c796d26a 100644
--- a/lib/internal/crypto/random.js
+++ b/lib/internal/crypto/random.js
@@ -50,7 +50,6 @@ const {
 const {
   isArrayBufferView,
   isAnyArrayBuffer,
-  isBigInt64Array,
   isFloat32Array,
   isFloat64Array,
 } = require('internal/util/types');
@@ -309,7 +308,6 @@ function onJobDone(buf, callback, error) {
 // be an integer-type TypedArray.
 function getRandomValues(data) {
   if (!isArrayBufferView(data) ||
-      isBigInt64Array(data) ||
       isFloat32Array(data) ||
       isFloat64Array(data)) {
     // Ordinarily this would be an ERR_INVALID_ARG_TYPE. However,
diff --git a/test/parallel/test-webcrypto-random.js b/test/parallel/test-webcrypto-random.js
index fd933915c5e48e..f2bf2c396fd20a 100644
--- a/test/parallel/test-webcrypto-random.js
+++ b/test/parallel/test-webcrypto-random.js
@@ -9,8 +9,15 @@ const { Buffer } = require('buffer');
 const assert = require('assert');
 const { getRandomValues } = require('crypto').webcrypto;
 
-[undefined, null, '', 1, {}, []].forEach((i) => {
-  assert.throws(() => getRandomValues(i), { code: 17 });
+[
+  undefined, null, '', 1, {}, [],
+  new Float32Array(1),
+  new Float64Array(1),
+].forEach((i) => {
+  assert.throws(
+    () => getRandomValues(i),
+    { name: 'TypeMismatchError', code: 17 },
+  );
 });
 
 {
@@ -18,32 +25,27 @@ const { getRandomValues } = require('crypto').webcrypto;
   getRandomValues(buf);
 }
 
-{
-  const buf = new Uint8Array(new Array(10).fill(0));
-  const before = Buffer.from(buf).toString('hex');
-  getRandomValues(buf);
-  const after = Buffer.from(buf).toString('hex');
-  assert.notStrictEqual(before, after);
-}
-
-{
-  const buf = new Uint16Array(new Array(10).fill(0));
-  const before = Buffer.from(buf).toString('hex');
-  getRandomValues(buf);
-  const after = Buffer.from(buf).toString('hex');
-  assert.notStrictEqual(before, after);
-}
+const intTypedConstructors = [
+  Int8Array,
+  Int16Array,
+  Int32Array,
+  Uint8Array,
+  Uint16Array,
+  Uint32Array,
+  BigInt64Array,
+  BigUint64Array,
+];
 
-{
-  const buf = new Uint32Array(new Array(10).fill(0));
-  const before = Buffer.from(buf).toString('hex');
+for (const ctor of intTypedConstructors) {
+  const buf = new ctor(10);
+  const before = Buffer.from(buf.buffer).toString('hex');
   getRandomValues(buf);
-  const after = Buffer.from(buf).toString('hex');
+  const after = Buffer.from(buf.buffer).toString('hex');
   assert.notStrictEqual(before, after);
 }
 
 {
-  const buf = new Uint16Array(new Array(10).fill(0));
+  const buf = new Uint16Array(10);
   const before = Buffer.from(buf).toString('hex');
   getRandomValues(new DataView(buf.buffer));
   const after = Buffer.from(buf).toString('hex');