From 1aca2031192c90f299feb3efce6573a46a6acc6c Mon Sep 17 00:00:00 2001
From: Robert Bendun <robert@bendun.cc>
Date: Wed, 17 Apr 2024 22:39:25 +0200
Subject: [PATCH] salt should be shared across H dummies

---
 main.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/main.py b/main.py
index 26ed21e..d7b5d6b 100644
--- a/main.py
+++ b/main.py
@@ -9,13 +9,15 @@ m0 = b"alice"
 m1 = b"bob"
 c = False
 
-q = 224
 curve = curves.Curve.get_curve('NIST-P224')
+q = curve.size
 g = curve.generator
 
+salt = Crypto.Random.get_random_bytes(16)
+
 def H(p: curves.Point) -> bytes:
+    print("H({p})")
     secret = pickle.dumps((p.x, p.y), protocol=4)
-    salt = Crypto.Random.get_random_bytes(16)
     key = Crypto.Protocol.KDF.scrypt(secret, salt, 16, N=2**14, r=8, p=1)
     return key[:32] # first 32 bytes of generated key