From 3b94a1d826e19e44b9516551231d87024384c469 Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Wed, 6 Oct 2021 17:58:24 +0300
Subject: [PATCH] GOST is only for TLS 1.3

---
 tls_gost.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tls_gost.go b/tls_gost.go
index a4ab28d..1ad67b4 100644
--- a/tls_gost.go
+++ b/tls_gost.go
@@ -5,6 +5,16 @@ package godlighty
 import "crypto/tls"
 
 func CHIHasGOST(chi *tls.ClientHelloInfo) bool {
+	tls13Found := false
+	for _, v := range chi.SupportedVersions {
+		if v == tls.VersionTLS13 {
+			tls13Found = true
+			break
+		}
+	}
+	if !tls13Found {
+		return false
+	}
 	for _, ss := range chi.SignatureSchemes {
 		switch ss {
 		case tls.GOSTR34102012256A, tls.GOSTR34102012256B, tls.GOSTR34102012256C, tls.GOSTR34102012256D, tls.GOSTR34102012512A, tls.GOSTR34102012512B, tls.GOSTR34102012512C:
-- 
2.44.0