From 16d70603a1b88b33ae0d6f734d522e5438544db9 Mon Sep 17 00:00:00 2001
From: Gerhard Stoebich <deb2001-github@yahoo.de>
Date: Mon, 5 Nov 2018 17:07:48 +0100
Subject: [PATCH] crypto: allow monkey patching of pseudoRandomBytes
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Make `pseudoRandomBytes` and it's aliases `prng` and `rng`
configurable to allow monkey patching.

PR-URL: https://github.com/nodejs/node/pull/24108
Refs: https://github.com/nodejs/node/pull/22519
Refs: https://github.com/nodejs/node/pull/23017
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 lib/crypto.js                       | 6 ++++++
 test/parallel/test-crypto-random.js | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/lib/crypto.js b/lib/crypto.js
index f6c5b7313b69af..cce9bfea86f61a 100644
--- a/lib/crypto.js
+++ b/lib/crypto.js
@@ -247,12 +247,16 @@ Object.defineProperties(exports, {
   // The ecosystem needs those to exist for backwards compatibility.
   prng: {
     enumerable: false,
+    configurable: true,
+    writable: true,
     value: pendingDeprecation ?
       deprecate(randomBytes, 'crypto.prng is deprecated.', 'DEP0115') :
       randomBytes
   },
   pseudoRandomBytes: {
     enumerable: false,
+    configurable: true,
+    writable: true,
     value: pendingDeprecation ?
       deprecate(randomBytes,
                 'crypto.pseudoRandomBytes is deprecated.', 'DEP0115') :
@@ -260,6 +264,8 @@ Object.defineProperties(exports, {
   },
   rng: {
     enumerable: false,
+    configurable: true,
+    writable: true,
     value: pendingDeprecation ?
       deprecate(randomBytes, 'crypto.rng is deprecated.', 'DEP0115') :
       randomBytes
diff --git a/test/parallel/test-crypto-random.js b/test/parallel/test-crypto-random.js
index df06134e4326f9..4c85545b4e40b1 100644
--- a/test/parallel/test-crypto-random.js
+++ b/test/parallel/test-crypto-random.js
@@ -306,3 +306,12 @@ assert.throws(
     }
   );
 });
+
+
+['pseudoRandomBytes', 'prng', 'rng'].forEach((f) => {
+  const desc = Object.getOwnPropertyDescriptor(crypto, f);
+  assert.ok(desc);
+  assert.strictEqual(desc.configurable, true);
+  assert.strictEqual(desc.writable, true);
+  assert.strictEqual(desc.enumerable, false);
+});