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| author | Raymond Hettinger <python@rcn.com> | 2016-12-30 05:54:25 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2016-12-30 05:54:25 (GMT) |
| commit | e9ee207622f0f78e31b8277ccb9eaa895ea3472d (patch) | |
| tree | b1f0113b031a3dcc5343a68393337ecd94b58bd8 /Lib/secrets.py | |
| parent | 9ea82ddad55d38ffad3cff5ce8afadaf0eaa59a3 (diff) | |
| download | cpython-e9ee207622f0f78e31b8277ccb9eaa895ea3472d.zip cpython-e9ee207622f0f78e31b8277ccb9eaa895ea3472d.tar.gz cpython-e9ee207622f0f78e31b8277ccb9eaa895ea3472d.tar.bz2 | |
Issue #29061: secrets.randbelow() would hang with a negative input
Diffstat (limited to 'Lib/secrets.py')
| -rw-r--r-- | Lib/secrets.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/secrets.py b/Lib/secrets.py index 27fa450..1304342 100644 --- a/Lib/secrets.py +++ b/Lib/secrets.py @@ -26,6 +26,8 @@ choice = _sysrand.choice def randbelow(exclusive_upper_bound): """Return a random int in the range [0, n).""" + if exclusive_upper_bound <= 0: + raise ValueError("Upper bound must be positive.") return _sysrand._randbelow(exclusive_upper_bound) DEFAULT_ENTROPY = 32 # number of bytes to return by default |