'encrypting a numpy array using paillier

I have a 2 dimensional numpy array which I would like to encrypt using the python phe library for paillier homomorphic encryption.

Currently I'm converting my array to a list of lists, encrypting each number separately and then returning the new list as a numpy array:

        arr_as_list = arr.tolist() # faster for processing than numpy array?
        encrypted_arr_as_list = [[self.public_key.encrypt(int(x)) for x in row] for row in arr_as_list]
        encrypted_numpy_arr = np.array(encrypted_arr_as_list)
        return encrypted_numpy_arr

This seems slow and cumbersome when it comes to large arrays. Is there a faster method for doing this?

Thanks

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'encrypting a numpy array using paillier

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