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    Hashes ``data`` with blake2b.

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                        the default digest size is
                        :const:`BLAKE2B_BYTES`
    :type digest_size: int
    :param key: the key to be set for keyed MAC/PRF usage; if set, the key
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    :type key: bytes
    :param salt: an initialization salt at most
                 :const:`BLAKE2B_SALTBYTES` long;
                 it will be zero-padded if needed
    :type salt: bytes
    :param person: a personalization string at most
                   :const:`BLAKE2B_PERSONALBYTES` long;
                   it will be zero-padded if needed
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    Computes a keyed MAC of ``message`` using the short-input-optimized
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    :param message: The message to hash.
    :type message: bytes
    :param key: the message authentication key for the siphash MAC construct
    :type key: bytes(:const:`SIPHASH_KEYBYTES`)
    :param encoder: A class that is able to encode the hashed message.
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    Computes a keyed MAC of ``message`` using the 128 bit variant of the
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    :param message: The message to hash.
    :type message: bytes
    :param key: the message authentication key for the siphash MAC construct
    :type key: bytes(:const:`SIPHASHX_KEYBYTES`)
    :param encoder: A class that is able to encode the hashed message.
    :returns: The hashed message.
    :rtype: bytes(:const:`SIPHASHX_BYTES`)
    :raises nacl.exceptions.UnavailableError: If called when using a
        minimal build of libsodium.

    .. versionadded:: 1.2
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