8tc.tddlmZddlmZmZmZmZmZmZddl m Z dZ dZ dZ GddeZd d Zd S) )bchr) VoidPointer SmartPointercreate_string_bufferget_raw_bufferc_size_t c_uint8_ptr)_raw_keccak_libc|ddzkr|dksJ|dkrdn|dzdz}t|t|dzz}|dz}|dkr |t|dzz}|dz}|dk |S)z2Left encode function as defined in NIST SP 800-185r) bit_lengthr)xnumencs ;/usr/lib/python3/dist-packages/Cryptodome/Hash/cSHAKE128.py _left_encoder)s dOOQAvv!!ALLNNQ.14C s))d1t8nn $C!GA a%%DTNN" a a%% Jczt|dz}|ddzkrtdt||zS)z4Encode string function as defined in NIST SP 800-185rr r z$String too large to encode in cSHAKE)len ValueErrorr)rbitlens r _encode_strr;sDVVaZF !t)?@@@   ! ##rcft||z}|t||zz |z}|d|zzS)z2Zero pad byte string as defined in NIST SP 800-185)rr)rlengthto_padnpads r_bytepadr"EsA& ! !A %F S[[6) )V 3D GdN ""rc$eZdZdZdZdZdZdS) cSHAKE_XOFz]A cSHAKE hash object. Do not instantiate directly. Use the :func:`new` function. ct}|r8tdt|z}t|d|z dz}d}nd}d}tj|t |dz|}|rtd|zt| tj |_ d|_ |r| ||r| |dSdS)Nri@rz#Error %d while instantiating cSHAKEF)rrr"r keccak_init address_ofrrrgetkeccak_destroy_state _is_squeezingupdate) selfdatacustomcapacitystate prefix_unpadprefixpadresults r__init__zcSHAKE_XOF.__init__Ws   &s++k&.A.AALlTH_q,@AAFCCFC ,U-=-=-?-?-5hk-B-B-022  'B%&'' '"599;;#2#ACC "  KK      KK       rc |jrtdtj|jt |tt|}|rtd||j fz|S)zContinue hashing of a message by consuming the next chunk of data. Args: data (byte string/byte array/memoryview): The next chunk of the message being hashed. z/You cannot call 'update' after the first 'read'z Error %d while updating %s state) r- TypeErrorr keccak_absorbr,r*r rrrname)r/r0r7s rr.zcSHAKE_XOF.updaters   OMNN N .t{/@/@/:4/@/@/7D /B/BDD  4? & 2344 4 rcd|_t|}tj|j|t |}|rtd||jfzt|S)ah Compute the next piece of XOF output. .. note:: You cannot use :meth:`update` anymore after the first call to :meth:`read`. Args: length (integer): the amount of bytes this method must return :return: the next piece of XOF output (of the given length) :rtype: byte string Tz!Error %d while extracting from %s) r-rr keccak_squeezer,r*rrr<r)r/rbfrr7s rreadzcSHAKE_XOF.reads""6** / 0A0A03080@0@BB  4@ & 2344 4c"""rN)__name__ __module__ __qualname____doc__r8r.r@rrr$r$QsK 6$#####rr$Nrc$t||dS)azReturn a fresh instance of a cSHAKE128 object. Args: data (bytes/bytearray/memoryview): Optional. The very first chunk of the message to hash. It is equivalent to an early call to :meth:`update`. custom (bytes): Optional. A customization bytestring (``S`` in SP 800-185). :Return: A :class:`cSHAKE_XOF` object )r$)r0r1s rnewrHs dFC ( ((r)Nr)Cryptodome.Util.py3compatrCryptodome.Util._raw_apirrrrrr Cryptodome.Hash.keccakr rrr"objectr$rHrErrrMs>+*****//////////////// 322222$$$$ # # #K#K#K#K#K#K#K#K#\))))))r