bpo-29410: Change the default hash algorithm to SipHash13. (GH-28752)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
Co-authored-by: Christian Heimes <christian@python.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/configure b/configure
index 3a6cf30..15c7c54 100755
--- a/configure
+++ b/configure
@@ -1561,9 +1561,9 @@ Optional Packages:
   --with-undefined-behavior-sanitizer
                           enable UndefinedBehaviorSanitizer undefined
                           behaviour detector, 'ubsan' (default is no)
-  --with-hash-algorithm=[fnv|siphash24]
+  --with-hash-algorithm=[fnv|siphash13|siphash24]
                           select hash algorithm for use in Python/pyhash.c
-                          (default is SipHash24)
+                          (default is SipHash13)
   --with-tzpath=<list of absolute paths separated by pathsep>
                            Select the default time zone search path for zoneinfo.TZPATH
 
@@ -10431,6 +10431,10 @@ if test "${with_hash_algorithm+set}" = set; then :
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $withval" >&5
 $as_echo "$withval" >&6; }
 case "$withval" in
+    siphash13)
+        $as_echo "#define Py_HASH_ALGORITHM 3" >>confdefs.h
+
+        ;;
     siphash24)
         $as_echo "#define Py_HASH_ALGORITHM 1" >>confdefs.h