def _zeroed_null_terminated_buf(self, data):
        """
        This method takes bytes, which can be a bytestring or a mutable
        buffer like a bytearray, and yields a null-terminated version of that
        data. This is required because PKCS12_parse doesn't take a length with
        its password char * and ffi.from_buffer doesn't provide null
        termination. So, to support zeroing the data via bytearray we
        need to build this ridiculous construct that copies the memory, but
        zeroes it after use.
        """
        if data is None:
            yield self._ffi.NULL
        else:
            data_len = len(data)
            buf = self._ffi.new("char[]", data_len + 1)
            self._ffi.memmove(buf, data, data_len)
            try:
                yield buf
            finally:
                # Cast to a uint8_t * so we can assign by integer
                self._zero_data(self._ffi.cast("uint8_t *", buf), data_len)

        This method takes bytes, which can be a bytestring or a mutable
        buffer like a bytearray, and yields a null-terminated version of that
        data. This is required because PKCS12_parse doesn't take a length with
        its password char * and ffi.from_buffer doesn't provide null
        termination. So, to support zeroing the data via bytearray we
        need to build this ridiculous construct that copies the memory, but
        zeroes it after use.
        
Solutions/CyberArkAudit/Data Connectors/.python_packages/lib/site-packages/cryptography/hazmat/backends/openssl/backend.py