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bpo-40286: Add randbytes() method to random.Random (GH-19527)

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Add random.randbytes() function and random.Random.randbytes()
method to generate random bytes.

Modify secrets.token_bytes() to use SystemRandom.randbytes()
rather than calling directly os.urandom().

Rename also genrand_int32() to genrand_uint32(), since it returns an
unsigned 32-bit integer, not a signed integer.

The _random module is now built with Py_BUILD_CORE_MODULE defined.
This commit is contained in:
Victor Stinner 2020-04-17 19:05:35 +02:00 • committed by GitHub
parent 22386bb4ef
commit 9f5fe7910f
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10 changed files with 177 additions and 12 deletions
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Modules/Setup
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@ -174,7 +174,7 @@ _symtable symtablemodule.c
#_weakref _weakref.c # basic weak reference support
#_testcapi _testcapimodule.c # Python C API test module
#_testinternalcapi _testinternalcapi.c -I$(srcdir)/Include/internal -DPy_BUILD_CORE_MODULE # Python internal C API test module
#_random _randommodule.c # Random number generator
#_random _randommodule.c -DPy_BUILD_CORE_MODULE # Random number generator
#_elementtree -I$(srcdir)/Modules/expat -DHAVE_EXPAT_CONFIG_H -DUSE_PYEXPAT_CAPI _elementtree.c # elementtree accelerator
#_pickle _pickle.c # pickle accelerator
#_datetime _datetimemodule.c # datetime accelerator