From 9bc5c9fbc3421f5e26f3fda0e339a2718b02db43 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Thu, 12 Dec 2019 12:02:37 -0500
Subject: [PATCH] crypto: cast oaepLabel to unsigned char*
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OpenSSL uses a macro without typechecking; since C++ does not
implicitly cast void* this is needed to conform Node.js to the
OpenSSL documentation.

PR-URL: https://github.com/nodejs/node/pull/30917
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
---
 src/node_crypto.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 4f8cc0e1ecbab8..f1a879d00813ef 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -5512,8 +5512,9 @@ bool PublicKeyCipher::Cipher(Environment* env,
     // OpenSSL takes ownership of the label, so we need to create a copy.
     void* label = OPENSSL_memdup(oaep_label, oaep_label_len);
     CHECK_NOT_NULL(label);
-    if (0 >= EVP_PKEY_CTX_set0_rsa_oaep_label(ctx.get(), label,
-                                              oaep_label_len)) {
+    if (0 >= EVP_PKEY_CTX_set0_rsa_oaep_label(ctx.get(),
+                reinterpret_cast<unsigned char*>(label),
+                                      oaep_label_len)) {
       OPENSSL_free(label);
       return false;
     }