From: Mark Wooding <mdw@distorted.org.uk>
Date: Thu, 11 May 2017 09:42:15 +0000 (+0100)
Subject: catacomb/__init__.py: Settle on SHAKE256 for X448 box-key generation.
X-Git-Tag: 1.2.0~4
X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb-python/commitdiff_plain/f1b0cf0da6b3bcc530d7f72982278510d94f6456

catacomb/__init__.py: Settle on SHAKE256 for X448 box-key generation.

This matches Ed448 hashing, which is probably a good thing.
---

diff --git a/catacomb/__init__.py b/catacomb/__init__.py
index 4840eef..5cbf993 100644
--- a/catacomb/__init__.py
+++ b/catacomb/__init__.py
@@ -889,7 +889,7 @@ class X448Pub (_XDHPub):
 class X448Priv (_XDHPriv, X448Pub):
   _KEYSZ = KeySZSet(X448_KEYSZ)
   def _op(me, k, X): return x448(k, X)
-  ##def _hashkey(me, z): return ???
+  def _hashkey(me, z): return Shake256().hash(z).done(salsa20.keysz.default)
 
 class _EdDSAPub (_BasePub):
   def beginhash(me): return me._HASH()