zkSNARK: Ensure that values balance correctly.

2016-05-04 18:26:05 -06:00
parent 5e61a78fec
commit e5f7c49d55
2 changed files with 42 additions and 3 deletions
--- a/src/zcash/circuit/utils.tcc
+++ b/src/zcash/circuit/utils.tcc
@@ -45,4 +45,11 @@ void insert_uint256(std::vector<bool>& into, uint256 from) {
 void insert_uint64(std::vector<bool>& into, uint64_t from) {
    std::vector<bool> num = uint64_to_bool_vector(from);
    into.insert(into.end(), num.begin(), num.end());
-}
+}
+
+template<typename FieldT>
+linear_combination<FieldT> packed_addition(pb_variable_array<FieldT>& input) {
+    return pb_packing_sum<FieldT>(pb_variable_array<FieldT>(
+        input.rbegin(), input.rend()
+    ));
+}