From 9904da17bb73753bd0fd1209f2b7e9a73cbdac2e Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Mon, 3 Jun 2019 14:48:46 +0200
Subject: [PATCH] Add warning about secp256k1 network keys (#2764)

---
 substrate/core/network-libp2p/src/service_task.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/substrate/core/network-libp2p/src/service_task.rs b/substrate/core/network-libp2p/src/service_task.rs
index a58b24cbfe..e74757e0b1 100644
--- a/substrate/core/network-libp2p/src/service_task.rs
+++ b/substrate/core/network-libp2p/src/service_task.rs
@@ -16,6 +16,7 @@
 
 use crate::{
 	behaviour::Behaviour,
+	config::NodeKeyConfig,
 	transport, NetworkState, NetworkStatePeer, NetworkStateNotConnectedPeer
 };
 use crate::custom_proto::{CustomProto, CustomProtoOut, CustomMessage, RegisteredProtocol};
@@ -79,6 +80,9 @@ where TMessage: CustomMessage + Send + 'static {
 	});
 
 	// Private and public keys configuration.
+	if let NodeKeyConfig::Secp256k1(_) = config.node_key {
+		warn!(target: "sub-libp2p", "Secp256k1 keys are deprecated in favour of ed25519");
+	}
 	let local_identity = config.node_key.clone().into_keypair()?;
 	let local_public = local_identity.public();
 	let local_peer_id = local_public.clone().into_peer_id();