From 4ed60b626a368132fccad4449f1c4d50e312b60c Mon Sep 17 00:00:00 2001
From: Sarang Noether <32460187+SarangNoether@users.noreply.github.com>
Date: Tue, 14 Apr 2020 20:31:30 -0400
Subject: Bulletproofs: verification speedup

---
 src/ringct/rctOps.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/ringct/rctOps.cpp')

diff --git a/src/ringct/rctOps.cpp b/src/ringct/rctOps.cpp
index 6e4d063df..b2dd32ada 100644
--- a/src/ringct/rctOps.cpp
+++ b/src/ringct/rctOps.cpp
@@ -408,6 +408,18 @@ namespace rct {
         return res;
     }
 
+    //Computes 8P without byte conversion
+    void scalarmult8(ge_p3 &res, const key &P)
+    {
+        ge_p3 p3;
+        CHECK_AND_ASSERT_THROW_MES_L1(ge_frombytes_vartime(&p3, P.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
+        ge_p2 p2;
+        ge_p3_to_p2(&p2, &p3);
+        ge_p1p1 p1;
+        ge_mul8(&p1, &p2);
+        ge_p1p1_to_p3(&res, &p1);
+    }
+
     //Computes lA where l is the curve order
     bool isInMainSubgroup(const key & A) {
         ge_p3 p3;
-- 
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