From 680b2d2e5468feec98bacd1bd087011b63edd164 Mon Sep 17 00:00:00 2001
From: thomaslavaur <thomas19.lavaur@gmail.com>
Date: Wed, 28 Aug 2024 15:37:51 +0200
Subject: [PATCH] fix VRF order for risc0 proof and not Circom

---
 cryptarchia/cryptarchia.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cryptarchia/cryptarchia.py b/cryptarchia/cryptarchia.py
index 0ca9ff5..a5fcf20 100644
--- a/cryptarchia/cryptarchia.py
+++ b/cryptarchia/cryptarchia.py
@@ -668,7 +668,7 @@ def phi(f: float, alpha: float) -> float:
 class LEADER_VRF:
     """NOT SECURE: A mock VRF function"""
 
-    ORDER = 2**253
+    ORDER = 2**256
 
     @classmethod
     def vrf(cls, coin: Coin, epoch_nonce: bytes, slot: Slot) -> int:
@@ -679,7 +679,7 @@ class LEADER_VRF:
         h.update(coin.encode_sk())
         h.update(coin.nonce)
 
-        return int(int.from_bytes(h.digest()) >> 3)
+        return int.from_bytes(h.digest())
 
     @classmethod
     def verify(cls, r, pk, nonce, slot):