From 4b328c66161d11ddb240ca9c10298b0581aaa6b5 Mon Sep 17 00:00:00 2001
From: Sarang Noether <32460187+SarangNoether@users.noreply.github.com>
Date: Thu, 29 Aug 2019 11:35:12 +0000
Subject: CLSAG signatures

---
 src/ringct/rctOps.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

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

diff --git a/src/ringct/rctOps.cpp b/src/ringct/rctOps.cpp
index b2dd32ada..245a3f477 100644
--- a/src/ringct/rctOps.cpp
+++ b/src/ringct/rctOps.cpp
@@ -511,6 +511,23 @@ namespace rct {
         ge_tobytes(aAbB.bytes, &rv);
     }
 
+    // addKeys_aGbBcC
+    // computes aG + bB + cC
+    // G is the fixed basepoint and B,C require precomputation
+    void addKeys_aGbBcC(key &aGbBcC, const key &a, const key &b, const ge_dsmp B, const key &c, const ge_dsmp C) {
+        ge_p2 rv;
+        ge_triple_scalarmult_base_vartime(&rv, a.bytes, b.bytes, B, c.bytes, C);
+        ge_tobytes(aGbBcC.bytes, &rv);
+    }
+
+    // addKeys_aAbBcC
+    // computes aA + bB + cC
+    // A,B,C require precomputation
+    void addKeys_aAbBcC(key &aAbBcC, const key &a, const ge_dsmp A, const key &b, const ge_dsmp B, const key &c, const ge_dsmp C) {
+        ge_p2 rv;
+        ge_triple_scalarmult_precomp_vartime(&rv, a.bytes, A, b.bytes, B, c.bytes, C);
+        ge_tobytes(aAbBcC.bytes, &rv);
+    }
 
     //subtract Keys (subtracts curve points)
     //AB = A - B where A, B are curve points
-- 
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