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| -rw-r--r-- | cryptography/utils.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/cryptography/utils.py b/cryptography/utils.py index e697d515..eac833b6 100644 --- a/cryptography/utils.py +++ b/cryptography/utils.py @@ -13,9 +13,18 @@ from __future__ import absolute_import, division, print_function +import sys + def register_interface(iface): def register_decorator(klass): iface.register(klass) return klass return register_decorator + + +def bit_length(x): + if sys.version_info >= (2, 7): + return x.bit_length() + else: + return len(bin(x)) - (2 + (x <= 0)) |