From 44463574372e113fd213f746bb8bb36b680d2c5c Mon Sep 17 00:00:00 2001
From: Craig Everett <zxq9@zxq9.com>
Date: Sat, 25 Oct 2025 12:11:03 +0900
Subject: [PATCH] Add interface functions

---
 src/gd_con.erl | 50 ++++++++++++++++++++++++++++----------------------
 1 file changed, 28 insertions(+), 22 deletions(-)

diff --git a/src/gd_con.erl b/src/gd_con.erl
index f1d2992..e229b80 100644
--- a/src/gd_con.erl
+++ b/src/gd_con.erl
@@ -14,7 +14,8 @@
          selected/1, network/0,
          password/2,
          refresh/0,
-         nonce/1, spend/1, chain/1, grids/1, sign_mess/1, sign_tx/1, sign_call/3, dry_run/2,
+         nonce/1, spend/1, chain/1, grids/1,
+         sign_mess/1, sign_binary/1, sign_tx/1, sign_call/3, dry_run/2,
          deploy/3,
          make_key/6, recover_key/1, mnemonic/1, rename_key/2, drop_key/1, list_keys/0,
          add_node/1, set_sole_node/1]).
@@ -172,6 +173,13 @@ sign_mess(Request) ->
     gen_server:cast(?MODULE, {sign_mess, Request}).
 
 
+-spec sign_binary(Request) -> ok
+    when Request :: map().
+
+sign_binary(Request) ->
+    gen_server:cast(?MODULE, {sign_binary, Request}).
+
+
 -spec sign_tx(Request) -> ok
     when Request :: map().
 
@@ -431,6 +439,9 @@ handle_cast({grids, String}, State) ->
 handle_cast({sign_mess, Request}, State) ->
     ok = do_sign_mess(Request, State),
     {noreply, State};
+handle_cast({sign_binary, Request}, State) ->
+    ok = do_sign_binary(Request, State),
+    {noreply, State};
 handle_cast({sign_tx, Request}, State) ->
     ok = do_sign_tx(Request, State),
     {noreply, State};
@@ -689,22 +700,23 @@ do_grids_sig2(WTF) ->
 
 do_sign_mess(Request = #{"public_id" := ID}, #s{wallet = #wallet{keys = Keys}}) ->
     case lists:keyfind(ID, #key.id, Keys) of
-        #key{pair = #{secret := SecKey}} ->
-            Sig = base64:encode(hz:sign_message(list_to_binary(Message), SecKey)),
-            SignedRequest = maps:put("signature", Sig, Request),
-            ResponseKeys =
-                ["grids",
-                 "chain",
-                 "network_id",
-                 "type",
-                 "public_id",
-                 "payload",
-                 "signature"],
-            post_grids_response(ResponseKeys, SignedRequest);
-        false ->
-            gd_gui:trouble({bad_key, ID})
+        #key{pair = #{secret := SecKey}} -> do_sign_mess2(Request, SecKey);
+        false                            -> gd_gui:trouble({bad_key, ID})
     end.
 
+do_sign_mess2(Request = #{"payload" := Message}, SecKey) ->
+    Sig = base64:encode(hz:sign_message(list_to_binary(Message), SecKey)),
+    SignedRequest = maps:put("signature", Sig, Request),
+    ResponseKeys =
+        ["grids",
+         "chain",
+         "network_id",
+         "type",
+         "public_id",
+         "payload",
+         "signature"],
+    post_grids_response(ResponseKeys, SignedRequest).
+
 
 do_sign_binary(Request = #{"public_id" := ID}, #s{wallet = #wallet{keys = Keys}}) ->
     case lists:keyfind(ID, #key.id, Keys) of
@@ -715,7 +727,7 @@ do_sign_binary(Request = #{"public_id" := ID}, #s{wallet = #wallet{keys = Keys}}
 do_sign_binary2(Request = #{"payload" := Payload}, SecKey) ->
     case base64_decode(Payload) of
         {ok, Binary} ->
-            Sig = base64:encode(hz_sign_binary(Binary, SecKey)),
+            Sig = base64:encode(hz:sign_binary(Binary, SecKey)),
             SignedRequest = maps:put("signature", Sig, Request),
             ResponseKeys =
                 ["grids",
@@ -730,12 +742,6 @@ do_sign_binary2(Request = #{"payload" := Payload}, SecKey) ->
             gd_gui:trouble(Error)
     end.
 
-hz_sign_binary(Binary, SecKey) ->
-    Prefix = <<"Gajumaru Signed Binary:">>,
-    Target = <<Prefix/binary, Binary/binary>>,
-    {ok, Hash} = eblake2:blake2b(32, Target),
-    ecu_eddsa:sign_detached(Hashed, SecKey).
-
 
 do_sign_tx(Request = #{"public_id" := ID, "payload" := CallData, "network_id" := NID},
            #s{wallet = #wallet{keys = Keys}}) ->