Use only secp256k1 as identity in libp2p. (#1343)

* Add libp2p_pki_schemes to beacon_node and inspector configuration files.

* Fix inspector.nim.cfg file name.

* Do not allow beacon_node to be build without libp2p_pki_schemes option value.

* Fix compilation problems.

* Fix tests.

* Fix validator_client.

beacon_chain/beacon_node.nim.cfg

@@ -2,6 +2,9 @@
 -d:"chronicles_runtime_filtering=on"
 -d:"chronicles_default_output_device=dynamic"
 
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"
+
 @if testnet_servers_image:
   -d:"chronicles_sinks=json"
   -d:"withoutPrompt"

beacon_chain/eth2_network.nim

@@ -249,6 +249,12 @@ const useNativeSnappy = when snappy_implementation == "native": true
                         elif snappy_implementation == "libp2p": false
                         else: {.fatal: "Please set snappy_implementation to either 'libp2p' or 'native'".}
 
+const
+  libp2p_pki_schemes {.strdefine.} = ""
+
+when libp2p_pki_schemes != "secp256k1":
+  {.fatal: "Incorrect building process, please use -d:\"libp2p_pki_schemes=secp256k1\"".}
+
 template libp2pProtocol*(name: string, version: int) {.pragma.}
 
 template `$`*(peer: Peer): string = id(peer.info)

beacon_chain/inspector.nim.cfg

@@ -0,0 +1,2 @@
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"

beacon_chain/validator_client.nim.cfg

@@ -2,6 +2,9 @@
 -d:"chronicles_runtime_filtering=on"
 -d:"chronicles_default_output_device=dynamic"
 
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"
+
 @if testnet_servers_image:
   -d:"chronicles_sinks=json"
   -d:"withoutPrompt"

tests/all_tests.nim.cfg

@@ -3,3 +3,5 @@
 # Investigate why it's needed.
 -d:withoutPrompt
 
+# Use only `secp256k1` public key cryptography as an identity in LibP2P.
+-d:"libp2p_pki_schemes=secp256k1"