Move to latest enacl dep, fix dialyzer complaint

rebar.config

@@ -1,9 +1,6 @@
 {erl_opts, [debug_info]}.
 {plugins, [rebar3_hex]}.
-{deps, [{enacl, "1.1.1"}]}.
-
-{profiles, [{test, [{deps, [{jsx, {git, "https://github.com/talentdeficit/jsx.git", {tag, "2.8.0"}}}]}]}
-           ]}.
+{deps, [{enacl, {git, "https://git.qpq.swiss/QPQ-AG/enacl.git", {ref, "4eb7ec70"}}}]}.
 
 {xref_checks, [undefined_function_calls, undefined_functions,
                locals_not_used,

rebar.lock

@@ -1,6 +1,4 @@
-{"1.2.0",
-[{<<"enacl">>,{pkg,<<"enacl">>,<<"1.1.1">>},0}]}.
-[
-{pkg_hash,[
- {<<"enacl">>, <<"F65DC64D9BFF2D8A534CB77AEF14DA5E7A2FA148987D87856F79A4745C9C2627">>}]}
-].
+[{<<"enacl">>,
+  {git,"https://git.qpq.swiss/QPQ-AG/enacl.git",
+       {ref,"4eb7ec70084ba7c87b1af8797c4c4e90c84f95a2"}},
+  0}].

src/enoise_cipher_state.erl

@@ -54,12 +54,8 @@ set_nonce(CState = #noise_cs{}, Nonce) ->
 encrypt_with_ad(CState = #noise_cs{ k = empty }, _AD, PlainText) ->
     {ok, CState, PlainText};
 encrypt_with_ad(CState = #noise_cs{ k = K, n = N, cipher = Cipher }, AD, PlainText) ->
-    case enoise_crypto:encrypt(Cipher, K, N, AD, PlainText) of
-        Encrypted when is_binary(Encrypted) ->
-            {ok, CState#noise_cs{ n = N+1 }, Encrypted};
-        Err = {error, _} ->
-            Err
-    end.
+    Encrypted = enoise_crypto:encrypt(Cipher, K, N, AD, PlainText),
+    {ok, CState#noise_cs{ n = N+1 }, Encrypted}.
 
 -spec decrypt_with_ad(CState :: state(), AD :: binary(), CipherText :: binary()) ->
                 {ok, state(), binary()} | {error, term()}.

src/enoise_crypto.erl

@@ -65,8 +65,7 @@ rekey(Cipher, K) ->
 
 -spec encrypt(Cipher :: enoise_cipher_state:noise_cipher(),
               Key :: binary(), Nonce :: non_neg_integer(),
-              Ad :: binary(), PlainText :: binary()) ->
-                binary() | {error, term()}.
+              Ad :: binary(), PlainText :: binary()) -> binary().
 encrypt('ChaChaPoly', K, N, Ad, PlainText) ->
     Nonce = <<0:32, N:64/little-unsigned-integer>>,
     enacl:aead_chacha20poly1305_ietf_encrypt(PlainText, Ad, Nonce, K);