Set the node first public key in the auth keys

Because node can change keys when they are restarting
based on their unavailability time, we have to base the
shared secrets on the node's first public key

lib/archethic/crypto.ex

@@ -1034,8 +1034,10 @@ defmodule Archethic.Crypto do
       transaction_type: :node_shared_secrets
     )
 
-    if Ownership.authorized_public_key?(ownership, last_node_public_key()) do
-      encrypted_secret_key = Ownership.get_encrypted_key(ownership, last_node_public_key())
+    node_public_key = first_node_public_key()
+
+    if Ownership.authorized_public_key?(ownership, node_public_key) do
+      encrypted_secret_key = Ownership.get_encrypted_key(ownership, node_public_key)
 
       daily_nonce_date = SharedSecrets.next_application_date(timestamp)
 

lib/archethic/crypto/keystore/shared_secrets/software_impl.ex

@@ -79,8 +79,10 @@ defmodule Archethic.Crypto.SharedSecretsKeystore.SoftwareImpl do
         validation_stamp: [:timestamp]
       ])
 
-    if Ownership.authorized_public_key?(ownership, Crypto.last_node_public_key()) do
-      encrypted_secret_key = Ownership.get_encrypted_key(ownership, Crypto.last_node_public_key())
+    node_public_key = Crypto.first_node_public_key()
+
+    if Ownership.authorized_public_key?(ownership, node_public_key) do
+      encrypted_secret_key = Ownership.get_encrypted_key(ownership, node_public_key)
 
       daily_nonce_date = SharedSecrets.next_application_date(timestamp)
 
@@ -210,7 +212,7 @@ defmodule Archethic.Crypto.SharedSecretsKeystore.SoftwareImpl do
     <<enc_daily_nonce_seed::binary-size(60), enc_transaction_seed::binary-size(60),
       enc_network_pool_seed::binary-size(60)>> = encrypted_secrets
 
-    with {:ok, aes_key} <- Crypto.ec_decrypt_with_last_node_key(encrypted_aes_key),
+    with {:ok, aes_key} <- Crypto.ec_decrypt_with_first_node_key(encrypted_aes_key),
          {:ok, daily_nonce_seed} <- Crypto.aes_decrypt(enc_daily_nonce_seed, aes_key),
          {:ok, transaction_seed} <- Crypto.aes_decrypt(enc_transaction_seed, aes_key),
          {:ok, network_pool_seed} <- Crypto.aes_decrypt(enc_network_pool_seed, aes_key) do

lib/archethic/shared_secrets/node_renewal.ex

@@ -51,7 +51,7 @@ defmodule Archethic.SharedSecrets.NodeRenewal do
   def next_authorized_node_public_keys do
     DB.get_latest_tps()
     |> Election.next_authorized_nodes(candidates(), P2P.authorized_nodes())
-    |> Enum.map(& &1.last_public_key)
+    |> Enum.map(& &1.first_public_key)
   end
 
   @doc """

test/archethic/bootstrap/sync_test.exs

@@ -238,7 +238,7 @@ defmodule Archethic.Bootstrap.SyncTest do
         <<enc_daily_nonce_seed::binary-size(60), _enc_transaction_seed::binary-size(60),
           _enc_network_pool_seed::binary-size(60)>> = encrypted_secrets
 
-        {:ok, aes_key} = Crypto.ec_decrypt_with_last_node_key(encrypted_secret_key)
+        {:ok, aes_key} = Crypto.ec_decrypt_with_first_node_key(encrypted_secret_key)
         {:ok, daily_nonce_seed} = Crypto.aes_decrypt(enc_daily_nonce_seed, aes_key)
         daily_nonce_keypair = Crypto.generate_deterministic_keypair(daily_nonce_seed)
 

test/archethic/bootstrap_test.exs

@@ -88,7 +88,7 @@ defmodule Archethic.BootstrapTest do
         <<enc_daily_nonce_seed::binary-size(60), _enc_transaction_seed::binary-size(60),
           _enc_network_pool_seed::binary-size(60)>> = encrypted_secrets
 
-        {:ok, aes_key} = Crypto.ec_decrypt_with_last_node_key(encrypted_secret_key)
+        {:ok, aes_key} = Crypto.ec_decrypt_with_first_node_key(encrypted_secret_key)
         {:ok, daily_nonce_seed} = Crypto.aes_decrypt(enc_daily_nonce_seed, aes_key)
         daily_nonce_keypair = Crypto.generate_deterministic_keypair(daily_nonce_seed)
 

test/archethic/shared_secrets/node_renewal_test.exs

@@ -33,7 +33,7 @@ defmodule Archethic.SharedSecrets.NodeRenewalTest do
         aes_key
       )
 
-    assert Ownership.authorized_public_key?(ownership, Crypto.last_node_public_key())
+    assert Ownership.authorized_public_key?(ownership, Crypto.first_node_public_key())
 
     assert {:ok, _, _} = NodeRenewal.decode_transaction_content(content)
   end