From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Wed, 12 Feb 2020 15:08:04 -0800
Subject: fix: use crypto impls for compat

BoringSSL does not export DSA_get0_q. This patch works around that problem
by using the implementations of those functions as found in the OpenSSL repo.
I plan to try and upstream a version of this.

diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 14029692e57b219d245d529a0be175c80f3a32de..cd763fd3755357b36e753cf778550cf2d498ed57 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -4522,7 +4522,7 @@ static unsigned int GetBytesOfRS(const ManagedEVPPKey& pkey) {
   if (base_id == EVP_PKEY_DSA) {
     DSA* dsa_key = EVP_PKEY_get0_DSA(pkey.get());
     // Both r and s are computed mod q, so their width is limited by that of q.
-    bits = BN_num_bits(DSA_get0_q(dsa_key));
+    bits = BN_num_bits(dsa_key->q);
   } else if (base_id == EVP_PKEY_EC) {
     EC_KEY* ec_key = EVP_PKEY_get0_EC_KEY(pkey.get());
     const EC_GROUP* ec_group = EC_KEY_get0_group(ec_key);