From c5d33bc5da97d5b67538dd8acd3ab62fcfbe40bd Mon Sep 17 00:00:00 2001
From: TQ Hirsch <thequux@thequux.com>
Date: Sun, 14 Jan 2024 04:05:45 +0100
Subject: [PATCH] Off-by-one error in polynomial degree calculation fixed

---
 src/main.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 4047c85..7bcbc44 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -145,7 +145,10 @@ impl Command for GenPoly {
 
         let mut polys = Vec::with_capacity(payload.len());
         for i in 0..payload.len() {
-            polys.push(rng.sample(UniformPoly{ intercept: GF256::from(payload[i]), degree: self.min_shares as usize}));
+            if i % 1000 == 0 {
+                eprint!("\rGenerated {i}/{}", payload.len());
+            }
+            polys.push(rng.sample(UniformPoly{ intercept: GF256::from(payload[i]), degree: self.min_shares as usize - 1}));
         }
 
         // export the poly
@@ -159,7 +162,7 @@ impl Command for GenShare {
         eprintln!("Reading poly");
         let mut poly: Vec<rssss::poly::Poly<GF256>> = serde_cbor::from_reader(io::stdin())?;
         eprintln!("Read poly");
-        let mut rng = rand::rngs::JitterRng::new()?;
+        let mut rng = rand::rngs::OsRng::new()?;
 
         let share = rssss::s4::Share::new((self.share_no as u8).into(), poly.as_slice());
         eprintln!("{share:?}");