From a71287c51ea4bf85addd6c526ea2e2d27617dea8 Mon Sep 17 00:00:00 2001
From: Tomas Krnak <tomas@krnak.cz>
Date: Thu, 11 Aug 2022 12:37:36 +0200
Subject: [PATCH] Add `ValueSum::commit`

---
 src/value.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/value.rs b/src/value.rs
index a760e77b..bbe4d60d 100644
--- a/src/value.rs
+++ b/src/value.rs
@@ -174,6 +174,15 @@ impl ValueSum {
             sign,
         )
     }
+
+    /// Commits this value with the corresponding trapdoor `rcv` by $ValueCommit^Orchard$
+    ///
+    /// Defined in [Zcash Protocol Spec § 5.4.8.3: Homomorphic Pedersen commitments (Sapling and Orchard)][concretehomomorphiccommit].
+    ///
+    /// [concretehomomorphiccommit]: https://zips.z.cash/protocol/nu5.pdf#concretehomomorphiccommit
+    pub fn commit(self, rcv: ValueCommitTrapdoor) -> ValueCommitment {
+        ValueCommitment::derive(self, rcv)
+    }
 }
 
 impl Add for ValueSum {