Edit file File name : _common_crypto_ctypes.py Content :# coding: utf-8 from __future__ import unicode_literals, division, absolute_import, print_function from ctypes import CDLL, c_uint32, c_char_p, c_size_t, c_int, c_uint from .._ffi import FFIEngineError __all__ = [ 'CommonCrypto', ] common_crypto_path = '/usr/lib/system/libcommonCrypto.dylib' CommonCrypto = CDLL(common_crypto_path, use_errno=True) try: CommonCrypto.CCKeyDerivationPBKDF.argtypes = [ c_uint32, c_char_p, c_size_t, c_char_p, c_size_t, c_uint32, c_uint, c_char_p, c_size_t ] CommonCrypto.CCKeyDerivationPBKDF.restype = c_int except (AttributeError): raise FFIEngineError('Error initializing ctypes') Save