Viewing File: /opt/imunify360/venv/lib/python3.11/site-packages/Crypto/Cipher/__pycache__/ARC2.cpython-311.pyc



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Module's constants for the modes of operation supported with ARC2:

:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
:var MODE_OPENPGP:  :ref:`OpenPGP Mode <openpgp_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
N)_create_cipher)byte_string)load_pycryptodome_raw_libVoidPointerSmartPointerc_size_tc_uint8_ptrzCrypto.Cipher._raw_arc2a?
                        int ARC2_start_operation(const uint8_t key[],
                                                 size_t key_len,
                                                 size_t effective_key_len,
                                                 void **pResult);
                        int ARC2_encrypt(const void *state,
                                         const uint8_t *in,
                                         uint8_t *out,
                                         size_t data_len);
                        int ARC2_decrypt(const void *state,
                                         const uint8_t *in,
                                         uint8_t *out,
                                         size_t data_len);
                        int ARC2_stop_operation(void *state);
                        c	|d}n#t$rtdwxYw|dd}t|tvrtdt|zd|cxkrdksntd|ztj}tj}t}|t|tt|t||}|rtd|zt||S)	z}This method instantiates and returns a handle to a low-level
    base cipher. It will absorb named parameters in the process.keyzMissing 'key' parametereffective_keyleniz$Incorrect ARC2 key length (%d bytes)(zH'effective_key_len' must be at least 40 and no larger than 1024 (not %d)z,Error %X while instantiating the ARC2 cipher)popKeyError	TypeErrorlenkey_size
ValueError
_raw_arc2_libARC2_start_operationARC2_stop_operationrr	r
address_ofrget)dict_parametersrrstart_operationstop_operationcipherresults       t/builddir/build/BUILD/imunify360-venv-2.6.3/opt/imunify360/venv/lib64/python3.11/site-packages/Crypto/Cipher/ARC2.py_create_base_cipherr>sl3!!%((33312223'**+=tDD
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Create a new RC2 cipher.

    :param key:
        The secret key to use in the symmetric cipher.
        Its length can vary from 5 to 128 bytes; the actual search space
        (and the cipher strength) can be reduced with the ``effective_keylen`` parameter.
    :type key: bytes, bytearray, memoryview

    :param mode:
        The chaining mode to use for encryption or decryption.
    :type mode: One of the supported ``MODE_*`` constants

    :Keyword Arguments:
        *   **iv** (*bytes*, *bytearray*, *memoryview*) --
            (Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
            and ``MODE_OPENPGP`` modes).

            The initialization vector to use for encryption or decryption.

            For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.

            For ``MODE_OPENPGP`` mode only,
            it must be 8 bytes long for encryption
            and 10 bytes for decryption (in the latter case, it is
            actually the *encrypted* IV which was prefixed to the ciphertext).

            If not provided, a random byte string is generated (you must then
            read its value with the :attr:`iv` attribute).

        *   **nonce** (*bytes*, *bytearray*, *memoryview*) --
            (Only applicable for ``MODE_EAX`` and ``MODE_CTR``).

            A value that must never be reused for any other encryption done
            with this key.

            For ``MODE_EAX`` there are no
            restrictions on its length (recommended: **16** bytes).

            For ``MODE_CTR``, its length must be in the range **[0..7]**.

            If not provided for ``MODE_EAX``, a random byte string is generated (you
            can read it back via the ``nonce`` attribute).

        *   **effective_keylen** (*integer*) --
            Optional. Maximum strength in bits of the actual key used by the ARC2 algorithm.
            If the supplied ``key`` parameter is longer (in bits) of the value specified
            here, it will be weakened to match it.
            If not specified, no limitation is applied.

        *   **segment_size** (*integer*) --
            (Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
            are segmented in. It must be a multiple of 8.
            If not specified, it will be assumed to be 8.

        *   **mac_len** : (*integer*) --
            (Only ``MODE_EAX``)
            Length of the authentication tag, in bytes.
            It must be no longer than 8 (default).

        *   **initial_value** : (*integer*) --
            (Only ``MODE_CTR``). The initial value for the counter within
            the counter block. By default it is **0**.

    :Return: an ARC2 object, of the applicable mode.
    )rsysmodules__name__)rmodeargskwargss    rnewr'_s.F#+h/dLTLLLVLLL	)__doc__r!
Crypto.CipherrCrypto.Util.py3compatrCrypto.Util._raw_apirrrrr	rrr'MODE_ECBMODE_CBCMODE_CFBMODE_OFBMODE_CTRMODE_OPENPGPMODE_EAX
block_sizerangerr(r<module>r@s,




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