lib/chronoscope/nts/key_establishment_response.ex

@@ -1,7 +1,7 @@
 defmodule Chronoscope.NTS.KeyEstablishmentResponse do
   import Bitwise
 
-  @aead_alogorithms %{
+  @aead_algorithms %{
     15 => "AEAD_AES_SIV_CMAC_256",
     30 => "AEAD_AES_128_GCM_SIV"
   }
@@ -16,6 +16,12 @@ defmodule Chronoscope.NTS.KeyEstablishmentResponse do
     2 => "Internal Server Error"
   }
 
+  def aead_algorithm_to_id(algorithm) do
+    @aead_algorithms
+    |> Map.new(fn {k, v} -> {v, k} end)
+    |> Map.get(algorithm)
+  end
+
   def parse(response) do
     parse_response(response, %{})
   end
@@ -127,7 +133,7 @@ defmodule Chronoscope.NTS.KeyEstablishmentResponse do
   end
 
   defp do_parse_aead_algorithm_list([high, low | rest], acc) do
-    @aead_alogorithms
+    @aead_algorithms
     |> Map.get(combine_octets(high, low), "UNKNOWN")
     |> then(&do_parse_aead_algorithm_list(rest, [&1 | acc]))
   end

lib/chronoscope_web/live/index_live.ex

@@ -2,6 +2,7 @@ defmodule ChronoscopeWeb.IndexLive do
   use ChronoscopeWeb, :live_view
 
   alias Chronoscope.NTS
+  alias Chronoscope.NTS.KeyEstablishmentResponse
 
   @topic "nts-servers"
 

lib/chronoscope_web/live/index_live.html.heex

@@ -37,7 +37,13 @@
                     <%= status %>
                 </td>
                 <td class="py-4 px-6 whitespace-nowrap">
-                    <%= Enum.at(response.aead_algorithms, 0) %>
+                    <% aead_algorithm =  Enum.at(response.aead_algorithms, 0) %>
+                    <span class="group relative">
+                        <%= KeyEstablishmentResponse.aead_algorithm_to_id(aead_algorithm) %>
+                        <span class="pointer-events-none absolute -top-9 left-0 w-max p-1 rounded-lg bg-zinc-300 dark:bg-zinc-600 opacity-0 transition-opacity group-hover:opacity-100">
+                            <%= aead_algorithm %>
+                        </span>
+                    </span>
                 </td>
                 <td class="py-4 px-6 whitespace-nowrap">
                     <%= length(response.cookies) %>
@@ -46,10 +52,10 @@
                     <%= response.cookie_length %>
                 </td>
                 <td class="py-4 px-6 whitespace-nowrap">
-                    <%= response.cert_expiration %>
+                    <%= response.cert_expiration |> DateTime.from_iso8601 |> then(fn {:ok, dt, _} -> Calendar.strftime(dt, "%Y-%m-%d %H:%M:%SZ") end)%>
                 </td>
                 <td class="py-4 px-6 whitespace-nowrap">
-                    <%= server.last_key_establishment %>
+                    <%= server.last_key_establishment  |> Calendar.strftime("%Y-%m-%d %H:%M:%SZ") %>
                 </td>
 
                 <% else %>
@@ -70,7 +76,9 @@
                 <td class="py-4 px-6 whitespace-nowrap"> - </td>
 
                 <td class="py-4 px-6 whitespace-nowrap">
-                    <%= server.last_key_establishment %>
+                    <%=
+                    server.last_key_establishment |> Calendar.strftime("%Y-%m-%d %H:%M:%SZ")
+                    %>
                 </td>
                 <% end %>
             </tr>

test/chronoscope/nts/key_establishment_response_test.exs

@@ -3,6 +3,13 @@ defmodule Chronoscope.NTS.KeyEstablishmentResponseTest do
 
   import Chronoscope.NTS.KeyEstablishmentResponse
 
+  describe "Chronoscope.NTS.KeyEstablishmentResponse.aead_algorithm_to_id()" do
+    test "maps names to a numeric identifiers" do
+      assert aead_algorithm_to_id("AEAD_AES_SIV_CMAC_256") == 15
+      assert aead_algorithm_to_id("AEAD_AES_128_GCM_SIV") == 30
+    end
+  end
+
   describe "Chronoscope.NTS.KeyEstablishmentResponse.parse()" do
     test "handles empty response" do
       assert parse([]) == %{}