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# coding: utf-8
from __future__ import unicode_literals, division, absolute_import, print_function

from .._ffi import register_ffi

from cffi import FFI


__all__ = [
    'CommonCrypto',
]


ffi = FFI()
ffi.cdef("""
    typedef uint32_t CCPBKDFAlgorithm;

    typedef uint32_t CCPseudoRandomAlgorithm;
    typedef unsigned int uint;

    int CCKeyDerivationPBKDF(CCPBKDFAlgorithm algorithm, const char *password, size_t passwordLen,
                    const char *salt, size_t saltLen, CCPseudoRandomAlgorithm prf, uint rounds,
                    char *derivedKey, size_t derivedKeyLen);
""")

common_crypto_path = '/usr/lib/system/libcommonCrypto.dylib'

CommonCrypto = ffi.dlopen(common_crypto_path)
register_ffi(CommonCrypto, ffi)

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