zkSNARK: Foundations of circuit design and verification logic.

src/zcash/circuit/utils.tcc

@@ -0,0 +1,29 @@
+std::vector<bool> uint256_to_bool_vector(uint256 input) {
+    std::vector<unsigned char> input_v(input.begin(), input.end());
+    std::vector<bool> output_bv(256, 0);
+    libzerocash::convertBytesVectorToVector(
+        input_v,
+        output_bv
+    );
+
+    return output_bv;
+}
+
+std::vector<bool> uint64_to_bool_vector(uint64_t input) {
+    std::vector<unsigned char> num_bv(8, 0);
+    libzerocash::convertIntToBytesVector(input, num_bv);
+    std::vector<bool> num_v(64, 0);
+    libzerocash::convertBytesVectorToVector(num_bv, num_v);
+
+    return num_v;
+}
+
+void insert_uint256(std::vector<bool>& into, uint256 from) {
+    std::vector<bool> blob = uint256_to_bool_vector(from);
+    into.insert(into.end(), blob.begin(), blob.end());
+}
+
+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());
+}