From 3b88b97245f22b5e9beabfe6d492b42844875be2 Mon Sep 17 00:00:00 2001
From: William Lin <31808623+Will-Lin4@users.noreply.github.com>
Date: Sun, 11 Apr 2021 00:46:35 -0400
Subject: [PATCH] Fix MarlinPC's CommitterKey to return the correct
 supported_degree (#78)

---
 CHANGELOG.md                            | 1 +
 src/marlin/marlin_pc/data_structures.rs | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ef9c799..5dbb335a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,5 @@
 ## Pending
+- MarlinPC's `supported_degree` fix.
 
 ### Breaking changes
 
diff --git a/src/marlin/marlin_pc/data_structures.rs b/src/marlin/marlin_pc/data_structures.rs
index 2e4581db..37e075db 100644
--- a/src/marlin/marlin_pc/data_structures.rs
+++ b/src/marlin/marlin_pc/data_structures.rs
@@ -88,7 +88,7 @@ impl<E: PairingEngine> PCCommitterKey for CommitterKey<E> {
     }
 
     fn supported_degree(&self) -> usize {
-        self.powers.len()
+        self.powers.len() - 1
     }
 }