Emakefile

@@ -0,0 +1 @@
+{"src/*",  [debug_info, {i, "include/"}, {outdir, "ebin/"}]}.

src/aeser_contract_code.erl

@@ -16,14 +16,15 @@
 serialize(CodeMap) ->
     serialize(CodeMap, ?SOPHIA_CONTRACT_VSN_3).
 
+
 -spec serialize(map(), non_neg_integer()) -> binary().
 serialize(CodeMap = #{ byte_code := ByteCode
                      , type_info := TypeInfo }, SophiaContractVersion) ->
     %% Source hash
-    SourceHash = case CodeMap of
+    SourceHash =
+        case CodeMap of
             #{ source_hash := SHash }      -> SHash;
-                     #{ contract_source := SrcStr } ->
+            #{ contract_source := SrcStr } -> blake2(32, list_to_binary(SrcStr))
-                         enacl:generichash(32, list_to_binary(SrcStr))
         end,
 
     %% Compiler version
@@ -47,6 +48,21 @@ serialize(CodeMap = #{ byte_code := ByteCode
                                   serialization_template(SophiaContractVersion),
                                   Fields).
 
+% NOTE:
+%   This form significantly favors the presence of enacl and slows fallback
+%   invokation of eblake2. `try' is really fast; the error throwing machinery
+%   is comparatively slow. The assumption here is that in cases where you want
+%   eblake2 performance isn't the problem you're solving (you're probably not
+%   syncing a new node, for example).
+blake2(Size, Bin) ->
+    try
+        enacl:generichash(Size, Bin)
+    catch error:undef ->
+        {ok, Hash} = eblake2:blake2b(Size, Bin),
+        Hash
+    end.
+
+
 -spec deserialize(binary()) -> map().
 deserialize(Binary) ->
     case aeser_chain_objects:deserialize_type_and_vsn(Binary) of

zomp.meta

@@ -0,0 +1,17 @@
+{a_email,[]}.
+{author,"Hans Svensson"}.
+{c_email,[]}.
+{copyright,"Hans Svensson"}.
+{deps,[{"otpr","eblake2",{1,0,0}}]}.
+{desc,"Serialization helpers for Aeternity node."}.
+{file_exts,[]}.
+{key_name,none}.
+{license,skip}.
+{modules,[]}.
+{name,"AE Serialization"}.
+{package_id,{"otpr","aeserialization",{0,1,0}}}.
+{prefix,none}.
+{repo_url,"https://github.com/aeternity/aeserialization"}.
+{tags,["blockchain","crypto","ae"]}.
+{type,lib}.
+{ws_url,[]}.