From 07a4e94e8488979c942769874b6325542388a7fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tobias=20Nie=C3=9Fen?= <tniessen@tnie.de>
Date: Sat, 25 Nov 2023 20:57:53 +0100
Subject: [PATCH] src: assert return value of BN_bn2binpad

Every other invocation of BN_bn2binpad checks the return value. For
safety and consistency, do so in RandomPrimeTraits::EncodeOutput()
as well.

PR-URL: https://github.com/nodejs/node/pull/50860
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
---
 src/crypto/crypto_random.cc | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/crypto/crypto_random.cc b/src/crypto/crypto_random.cc
index 245f3529186964..48154df7dc91ed 100644
--- a/src/crypto/crypto_random.cc
+++ b/src/crypto/crypto_random.cc
@@ -75,10 +75,10 @@ Maybe<bool> RandomPrimeTraits::EncodeOutput(
   size_t size = BN_num_bytes(params.prime.get());
   std::shared_ptr<BackingStore> store =
       ArrayBuffer::NewBackingStore(env->isolate(), size);
-  BN_bn2binpad(
-      params.prime.get(),
-      reinterpret_cast<unsigned char*>(store->Data()),
-      size);
+  CHECK_EQ(static_cast<int>(size),
+           BN_bn2binpad(params.prime.get(),
+                        reinterpret_cast<unsigned char*>(store->Data()),
+                        size));
   *result = ArrayBuffer::New(env->isolate(), store);
   return Just(true);
 }