From 3822bb69c92bd1288edebff02971113b1de6b618 Mon Sep 17 00:00:00 2001
From: Jarvis Carroll <spiveehere@gmail.com>
Date: Tue, 23 Sep 2025 17:34:55 +1000
Subject: [PATCH] Coerce binaries as-is

Sophia accepts both sg_... and #... as signatures, so we should probably
accept binaries as signatures directly. People might expect to be able
to put the listy string "#..." in too, but that is more complex to do.
---
 src/hz.erl | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/hz.erl b/src/hz.erl
index 8215779..5d0b2f8 100644
--- a/src/hz.erl
+++ b/src/hz.erl
@@ -1820,6 +1820,11 @@ coerce({O, N, contract}, S, to_fate) ->
 coerce({_, _, contract}, {contract, Bin}, from_fate) ->
     Address = gmser_api_encoder:encode(contract_pubkey, Bin),
     {ok, unicode:characters_to_list(Address)};
+coerce({_, _, signature}, S, to_fate) when is_binary(S) andalso (byte_size(S) =:= 64) ->
+    % If it is a binary of 64 bytes then it can be used as is... If it is an
+    % sg_... string of 64 bytes, then it is too short to be valid, so just
+    % interpret it as a binary directly.
+    {ok, S};
 coerce({O, N, signature}, S, to_fate) ->
     coerce_chain_object(O, N, signature, signature, S);
 coerce({_, _, signature}, Bin, from_fate) ->
@@ -2514,6 +2519,15 @@ coerce_signature_test() ->
                  249,2,3,85,173,106,150,243,253,89,128,248,52,195,140,95,114,
                  233,110,119,143,206,137,124,36,63,154,85,7>>).
 
+coerce_signature_binary_test() ->
+    {ok, Type} = annotate_type(signature, #{}),
+    Binary = <<231,4,97,129,16,173,37,42,194,249,28,94,134,163,208,84,22,135,
+               169,85,212,142,14,12,233,252,97,50,193,158,229,51,123,206,222,
+               249,2,3,85,173,106,150,243,253,89,128,248,52,195,140,95,114,
+               233,110,119,143,206,137,124,36,63,154,85,7>>,
+    {ok, Binary} = coerce(Type, Binary, to_fate),
+    ok.
+
 coerce_bool_test() ->
     {ok, Type} = annotate_type(boolean, #{}),
     try_coerce(Type, true, true),