as Latin-1),
    which does not allow any characters with codepoints > 255.
 salt (string or byte string):
    A (byte) string to use for better protection from dictionary attacks.
    This value does not need to be kept secret, but it should be randomly
    chosen for each derivation. It is recommended to use at least 16 bytes.

    Strings will be encoded as ISO 8859-1 (also known as Latin-1),
    which does not allow any characters with codepoints > 255.
 dkLen (integer):
    The cumulative length of the keys to produce.

    Due to a flaw in the PBKDF2 design, you should not request more bytes
    than the ``prf`` can output. For instance, ``dkLen`` should not exceed
    20 bytes in combination with ``HMAC-SHA1``.
 count (integer):
    The number of iterations to carry out. The higher the value, the slower
    and the more secure the function becomes.

    You should find the maximum number of iterations that keeps the
    key derivation still acceptable on the slowest hardware you must support.

    Although the default value is 1000, **it is recommended to use at least
    1000000 (1 million) iterations**.
 prf (callable):
    A pseudorandom function. It must be a function that returns a
    pseudorandom byte string from two parameters: a secret and a salt.
    The slower the algorithm, the more secure the derivation function.
    If not specified, **HMAC-SHA1** is used.
 hmac_hash_module (module):
    A module from ``Cryptodome.Hash`` implementing a Merkle-Damgard cryptographic
    hash, which PBKDF2 must use in combination with HMAC.
    This parameter is mutually exclusive with ``prf``.

Return:
    A byte string of length ``dkLen`` that can be used as key material.
    If you want multiple keys, just break up this string into segments of the desired length.
z2'prf' and 'hmac_hash_module' are mutually exlusiveNÚ