pub unsafe extern "C" fn SecKeyCopyKeyExchangeResult(
privateKey: SecKeyRef,
algorithm: SecKeyAlgorithm,
publicKey: SecKeyRef,
parameters: CFDictionaryRef,
error: *mut CFErrorRef,
) -> CFDataRefpub unsafe extern "C" fn SecKeyCopyKeyExchangeResult(
privateKey: SecKeyRef,
algorithm: SecKeyAlgorithm,
publicKey: SecKeyRef,
parameters: CFDictionaryRef,
error: *mut CFErrorRef,
) -> CFDataRef