From fd251c9eea2a054ec9968e7097c3e752287af26c Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Fri, 24 Jul 2026 17:41:21 -0400
Subject: [PATCH] delete ECDSA private key BIGNUM if non-openssl or older
 openssl crypto library

---
 libi2pd/Signature.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libi2pd/Signature.h b/libi2pd/Signature.h
index fe609fb8..7e85bf42 100644
--- a/libi2pd/Signature.h
+++ b/libi2pd/Signature.h
@@ -285,7 +285,12 @@ namespace crypto
 			ECDSASigner (const uint8_t * signingPrivateKey)
 			{
 				m_PrivateKey = EC_KEY_new_by_curve_name (curve);
-				EC_KEY_set_private_key (m_PrivateKey, BN_bin2bn (signingPrivateKey, keyLen/2, NULL));
+				BIGNUM * privKey = BN_bin2bn (signingPrivateKey, keyLen/2, nullptr);
+				if (priKey)
+				{
+					EC_KEY_set_private_key (m_PrivateKey, privKey);
+					BN_free (privKey);
+				}
 			}
 
 			~ECDSASigner ()