Enforce first four bits are zero for all spending keys and phi.

2016-05-16 09:50:31 -06:00
parent 4ac1841614
commit defe37a6d4
15 changed files with 123 additions and 42 deletions
--- a/src/zcash/circuit/gadget.tcc
+++ b/src/zcash/circuit/gadget.tcc
@@ -187,7 +187,7 @@ public:
    }

    void generate_r1cs_witness(
-        const uint256& phi,
+        const uint252& phi,
        const uint256& rt,
        const uint256& h_sig,
        const boost::array<JSInput, NumInputs>& inputs,
@@ -234,7 +234,7 @@ public:
        // Witness phi
        zk_phi->bits.fill_with_bits(
            this->pb,
-            trailing252(uint256_to_bool_vector(phi))
+            uint252_to_bool_vector(phi)
        );

        // Witness h_sig