From a6ebaeda0c556f313c3cd7fa6fde808154e89685 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Thu, 17 Sep 2026 18:38:12 -0400
Subject: [PATCH] don't crash if unknown signing key type for new private keys

---
 libi2pd/Identity.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libi2pd/Identity.cpp b/libi2pd/Identity.cpp
index 66ff402a..06b4b13f 100644
--- a/libi2pd/Identity.cpp
+++ b/libi2pd/Identity.cpp
@@ -768,6 +768,11 @@ namespace data
 			PrivateKeys keys;
 			// signature
 			std::unique_ptr<i2p::crypto::Verifier> verifier (IdentityEx::CreateVerifier (type));
+			if (!verifier)
+			{
+				LogPrint (eLogError, "Identity: Can't create keys with signing key type ", (int)type, ". Use DSA-SHA1");
+				return PrivateKeys (i2p::data::CreateRandomKeys ()); // DSA-SHA1
+			}
 			std::vector<uint8_t> signingPublicKey(verifier->GetPublicKeyLen ());
 			keys.m_SigningPrivateKey.resize (verifier->GetPrivateKeyLen ());
 			GenerateSigningKeyPair (type, keys.m_SigningPrivateKey.data (), signingPublicKey.data ());