Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-11-04 07:31:38 +00:00
Code Issues Projects Releases Packages Wiki Activity

Merge from 3.1: Issue #13703: add a way to randomize the hash values of basic types (str, bytes, datetime)

Browse source 
in order to make algorithmic complexity attacks on (e.g.) web apps much more complicated.

The environment variable PYTHONHASHSEED and the new command line flag -R control this
behavior.
This commit is contained in:
Georg Brandl 2012-02-20 21:31:46 +01:00
commit 09a7c72cad
34 changed files with 676 additions and 162 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Python/sysmodule.c
View file

@ -1368,6 +1368,7 @@ static PyStructSequence_Field flags_fields[] = {
/* {"skip_first", "-x"}, */
{"bytes_warning", "-b"},
{"quiet", "-q"},
{"hash_randomization", "-R"},
{0}
};
@ -1376,9 +1377,9 @@ static PyStructSequence_Desc flags_desc = {
flags__doc__, /* doc */
flags_fields, /* fields */
#ifdef RISCOS
13
14
#else
12
13
#endif
};
@ -1412,6 +1413,7 @@ make_flags(void)
/* SetFlag(skipfirstline); */
SetFlag(Py_BytesWarningFlag);
SetFlag(Py_QuietFlag);
SetFlag(Py_HashRandomizationFlag);
#undef SetFlag
if (PyErr_Occurred()) {