From 13a8359ad163ddc5b8b0d4f0f45c07d6556f7097 Mon Sep 17 00:00:00 2001
From: Nick Farrow <nick@nickfarrow.com>
Date: Sun, 24 Dec 2023 23:40:15 +1100
Subject: [PATCH] [frost] small accessibility fixups

---
 schnorr_fun/src/frost.rs        | 5 +++++
 schnorr_fun/src/share_backup.rs | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/schnorr_fun/src/frost.rs b/schnorr_fun/src/frost.rs
index 9ef02111..ce01b2f3 100644
--- a/schnorr_fun/src/frost.rs
+++ b/schnorr_fun/src/frost.rs
@@ -405,6 +405,11 @@ impl<T: Copy + PointType> FrostKey<T> {
     pub fn threshold(&self) -> usize {
         self.point_polynomial.len()
     }
+
+    /// The public image of the key's polynomial on the elliptic curve.
+    pub fn point_polynomial(&self) -> Vec<Point> {
+        self.point_polynomial.clone()
+    }
 }
 
 impl FrostKey<Normal> {
diff --git a/schnorr_fun/src/share_backup.rs b/schnorr_fun/src/share_backup.rs
index 3b9b05cc..390cc720 100644
--- a/schnorr_fun/src/share_backup.rs
+++ b/schnorr_fun/src/share_backup.rs
@@ -96,7 +96,7 @@ pub fn polynomial_identifier<H: Default + Digest<OutputSize = U32>>(
 pub fn encode_backup<H: Default + Digest<OutputSize = U32>>(
     polynomial: &Vec<Point>,
     secret_share: &Scalar,
-    share_index: &Scalar,
+    share_index: &Scalar<Public>,
 ) -> String {
     let threshold = polynomial.len();
     let mut data = [u5::default(); 1 + 4 + 52 + 52];