¿igdZddlZddlmZddlmZmZmZmZddl m Z m Z m Z m Z e ddZdZd Zd Zd Zd Zd ZdZdZdZdZdZdZdS)a Module's constants for the modes of operation supported with Triple DES: :var MODE_ECB: :ref:`Electronic Code Book (ECB) ` :var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) ` :var MODE_CFB: :ref:`Cipher FeedBack (CFB) ` :var MODE_OFB: :ref:`Output FeedBack (OFB) ` :var MODE_CTR: :ref:`CounTer Mode (CTR) ` :var MODE_OPENPGP: :ref:`OpenPGP Mode ` :var MODE_EAX: :ref:`EAX Mode ` N)_create_cipher) byte_stringbchrbordbstr)load_pycryptodome_raw_lib VoidPointer SmartPointerc_size_tzCryptodome.Cipher._raw_des3a int DES3_start_operation(const uint8_t key[], size_t key_len, void **pResult); int DES3_encrypt(const void *state, const uint8_t *in, uint8_t *out, size_t data_len); int DES3_decrypt(const void *state, const uint8_t *in, uint8_t *out, size_t data_len); int DES3_stop_operation(void *state); cdt|tvrtddfd|D}|dd|ddks|dd |d dkrtd |S) amSet the parity bits in a TDES key. :param key_in: the TDES key whose bits need to be adjusted :type key_in: byte string :returns: a copy of ``key_in``, with the parity bits correctly set :rtype: byte string :raises ValueError: if the TDES key is not 16 or 24 bytes long :raises ValueError: if the TDES key degenerates into Single DES cRd}tddD] }|||z dzz}|dz|zS)N)range)key_byteparityis R/var/www/html/afkarena/venv/lib/python3.11/site-packages/Cryptodome/Cipher/DES3.py parity_bytez&adjust_key_parity..parity_byteIsBq! * *A x1}) )FF46))zNot a valid TDES keyrc Zg|]'}tt|(S)rr).0xrs r z%adjust_key_parity..Rs1EEEkk$q''2233EEErNriiz(Triple DES key degenerates to single DES)lenkey_size ValueErrorjoin)key_inkey_outrs @radjust_key_parityr$<s***  6{{(""/000hhEEEEVEEEFFGrr{gadm##ws2v'"##,'F'FCDDD Nrc |d}n#t$rtdwxYwtt |}t j}t j}t}||tt|| }|rtd|zt||S)z}This method instantiates and returns a handle to a low-level base cipher. It will absorb named parameters in the process.keyzMissing 'key' parameterz,Error %X while instantiating the TDES cipher)popKeyError TypeErrorr$r _raw_des3_libDES3_start_operationDES3_stop_operationr r r address_ofr r get)dict_parametersr"r&start_operationstop_operationcipherresults r_create_base_cipherr4Zs3 $$U++ 33312223 DLL ) )C#8O"6N ]]F _S%c#hh//#..0022F#G!"## #  n 5 55s2cPttjt||g|Ri|S)a Create a new Triple DES cipher. :param key: The secret key to use in the symmetric cipher. It must be 16 or 24 byte long. The parity bits will be ignored. :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). * **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: a Triple DES object, of the applicable mode. )rsysmodules__name__)r&modeargskwargss rnewr<rs.x #+h/d LT L L LV L LLrr r)r)__doc__r6Cryptodome.CipherrCryptodome.Util.py3compatrrrrCryptodome.Util._raw_apirr r r r*r$r4r<MODE_ECBMODE_CBCMODE_CFBMODE_OFBMODE_CTR MODE_OPENPGPMODE_EAX block_sizerrrrrPs,   ,,,,,,CCCCCCCCCCCC,,,,,,,,,,,,*)1  $<6660<M<M<M|       r