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

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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 19:54:16 +01:00
parent ec1712a166
commit 2daf6ae249
32 changed files with 660 additions and 152 deletions
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Include/pydebug.h
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@ -19,6 +19,7 @@ PyAPI_DATA(int) Py_DivisionWarningFlag;
PyAPI_DATA(int) Py_DontWriteBytecodeFlag;
PyAPI_DATA(int) Py_NoUserSiteDirectory;
PyAPI_DATA(int) Py_UnbufferedStdioFlag;
PyAPI_DATA(int) Py_HashRandomizationFlag;
/* this is a wrapper around getenv() that pays attention to
Py_IgnoreEnvironmentFlag. It should be used for getting variables like