ssue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'.

Python now uses SipHash24 on all major platforms.

1 files changed, 29 insertions, 0 deletions

diff --git a/Doc/license.rst b/Doc/license.rst
index 598ba86..5e6ed26 100644
--- a/Doc/license.rst
+++ b/Doc/license.rst
@@ -609,6 +609,35 @@ the following note::
   http://creativecommons.org/publicdomain/zero/1.0/
 
 
+SipHash24
+---------
+
+The file :file:`Python/pyhash.c` contains Marek Majkowski' implementation of
+Dan Bernstein's SipHash24 algorithm. The contains the following note::
+
+  <MIT License>
+  Copyright (c) 2013  Marek Majkowski <marek@popcount.org>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+  </MIT License>
+
+  Original location:
+     https://github.com/majek/csiphash/
+
+  Solution inspired by code from:
+     Samuel Neves (supercop/crypto_auth/siphash24/little)
+     djb (supercop/crypto_auth/siphash24/little2)
+     Jean-Philippe Aumasson (https://131002.net/siphash/siphash24.c)
+
+
 strtod and dtoa
 ---------------