From 24d700ce80de3589bfdc0b646479f48a7b401687 Mon Sep 17 00:00:00 2001
From: jiuyuan-light <ggyxingdye@gmail.com>
Date: Wed, 26 Nov 2025 15:54:15 +0800
Subject: [PATCH] fixed _TLSSignature show2

---
 scapy/layers/tls/keyexchange.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scapy/layers/tls/keyexchange.py b/scapy/layers/tls/keyexchange.py
index 0f939b8358e..59049e1e6d3 100644
--- a/scapy/layers/tls/keyexchange.py
+++ b/scapy/layers/tls/keyexchange.py
@@ -170,7 +170,7 @@ class _TLSSignature(_GenericTLSSessionInheritance):
 
     def __init__(self, *args, **kargs):
         super(_TLSSignature, self).__init__(*args, **kargs)
-        if "sig_alg" not in kargs:
+        if self.sig_alg is None and "sig_alg" not in kargs:
             # Default sig_alg
             self.sig_alg = 0x0804
             if self.tls_session and self.tls_session.tls_version: