diff --git a/gostcoin-qt.pro b/gostcoin-qt.pro
index e8b63bd..920c3b1 100644
--- a/gostcoin-qt.pro
+++ b/gostcoin-qt.pro
@@ -201,6 +201,7 @@ HEADERS += src/qt/bitcoingui.h \
     src/ui_interface.h \
     src/qt/rpcconsole.h \
     src/i2p.h \
+    src/Crypto.h \
     src/Gost.h \
     src/version.h \
     src/netbase.h \
diff --git a/src/Crypto.h b/src/Crypto.h
new file mode 100644
index 0000000..5c78a07
--- /dev/null
+++ b/src/Crypto.h
@@ -0,0 +1,26 @@
+#ifndef CRYPTO_H__
+#define CRYPTO_H__
+
+#include <openssl/bn.h>
+#include <openssl/ecdsa.h>
+
+#include <openssl/opensslv.h>
+#if (OPENSSL_VERSION_NUMBER < 0x010100000) || defined(LIBRESSL_VERSION_NUMBER) // 1.1.0 or LibreSSL
+// define getters and setters introduced in 1.1.0
+
+inline int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s)
+	{
+		if (sig->r) BN_free (sig->r);
+		if (sig->s) BN_free (sig->s);
+		sig->r = r; sig->s = s; return 1;
+	}
+inline void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
+	{ *pr = sig->r; *ps = sig->s; }
+
+// ssl
+#define TLS_method TLSv1_method
+
+#endif
+
+#endif
+
diff --git a/src/key.cpp b/src/key.cpp
index e534417..4215c8f 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -2,6 +2,7 @@
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include "Crypto.h"
 #include "Gost.h"
 #include "key.h"
 
@@ -57,7 +58,9 @@ static int ECDSA_SIG_recover_key_GFp(EC_KEY *eckey, ECDSA_SIG *ecsig, const unsi
     if (!eckey) return 0;
 	BIGNUM * d = BN_bin2bn (msg, msglen, nullptr); 
 	const auto& curve = i2p::crypto::GetGOSTR3410Curve (i2p::crypto::eGOSTR3410CryptoProA);
-	EC_POINT * pub = curve->RecoverPublicKey (d, ecsig->r, ecsig->s, recid % 2);
+    const BIGNUM * r, * s;
+	ECDSA_SIG_get0 (ecsig, &r, &s);
+	EC_POINT * pub = curve->RecoverPublicKey (d, r, s, recid % 2);
 	BN_free (d);
 	if (!pub) return 0;
 	EC_KEY_set_public_key(eckey, pub);	
@@ -214,8 +217,9 @@ public:
         if (rec<0 || rec>=3)
             return false;
         ECDSA_SIG *sig = ECDSA_SIG_new();
-        BN_bin2bn(&p64[0],  32, sig->r);
-        BN_bin2bn(&p64[32], 32, sig->s);
+        auto r = BN_bin2bn(&p64[0],  32, NULL);
+        auto s = BN_bin2bn(&p64[32], 32, NULL);
+        ECDSA_SIG_set0 (sig, r, s);
         bool ret = ECDSA_SIG_recover_key_GFp(pkey, sig, (unsigned char*)&hash, sizeof(hash), rec, 0) == 1;
         ECDSA_SIG_free(sig);
         return ret;