//usr/lib64/python3.9/site-packages/cryptography/hazmat/primitives/kdf/__pycache__
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__init__.cpython-39.opt-1.pyc — 1.01 KB
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__init__.cpython-39.pyc — 1.01 KB
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concatkdf.cpython-39.opt-1.pyc — 3.76 KB
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concatkdf.cpython-39.pyc — 3.76 KB
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hkdf.cpython-39.opt-1.pyc — 2.96 KB
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hkdf.cpython-39.pyc — 2.96 KB
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kbkdf.cpython-39.opt-1.pyc — 6.1 KB
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kbkdf.cpython-39.pyc — 6.15 KB
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pbkdf2.cpython-39.opt-1.pyc — 1.91 KB
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pbkdf2.cpython-39.pyc — 1.91 KB
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scrypt.cpython-39.opt-1.pyc — 2.04 KB
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scrypt.cpython-39.pyc — 2.04 KB
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x963kdf.cpython-39.opt-1.pyc — 1.97 KB
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x963kdf.cpython-39.pyc — 1.97 KB
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a a @shddlZddlmZddlmZmZddlmZmZm Z ddl m Z Gddde Z Gdd d e Z dS) N)utils)AlreadyFinalized InvalidKey) constant_timehasheshmac)KeyDerivationFunctionc@sfeZdZd ejeejeejeej dddZ eedddZ eeddd Z eedd d d Z dS)HKDFN) algorithmlengthsaltinfobackendcCsB||_|durd|jj}n td|||_t|j|||_dS)Nr ) _algorithm digest_sizer _check_bytes_salt HKDFExpand _hkdf_expand)selfr r r r rrM/usr/lib64/python3.9/site-packages/cryptography/hazmat/primitives/kdf/hkdf.py__init__s  z HKDF.__init__ key_materialreturncCs"t|j|j}|||SN)rHMACrrupdatefinalize)rrhrrr_extract%s z HKDF._extractcCstd||j||S)Nr)r_check_byteslikerderiver"rrrrrr$*s z HKDF.deriver expected_keyrcCst|||stdSrrZbytes_eqr$rrrr'rrrverify.sz HKDF.verify)N)__name__ __module__ __qualname__r HashAlgorithminttypingOptionalbytesAnyrr"r$r*rrrrr s r c@s^eZdZd ejeejeej dddZ eedddZ eeddd Z eedd d d Z dS)rN)r r r rcCsV||_d|j}||kr&td|||_|dur:d}n td|||_d|_dS)Nz)Cannot derive keys larger than {} octets.r F) rr ValueErrorformat_lengthrr_info_used)rr r r rZ max_lengthrrrr4s  zHKDFExpand.__init__rcCsdg}d}|jjt|d|jkrtt||j}||d||j|t|g| | |d7}q d |d|jS)Nr5) rrlenr8rrrr9r2appendr join)rroutputZcounterr!rrr_expandOs  zHKDFExpand._expandcCs&td||jrtd|_||S)NrT)rr#r:rrAr%rrrr$]s  zHKDFExpand.deriver&cCst|||stdSrr(r)rrrr*eszHKDFExpand.verify)N)r+r,r-rr.r/r0r1r2r3rrAr$r*rrrrr3s r)r0Z cryptographyrZcryptography.exceptionsrrZcryptography.hazmat.primitivesrrrZ"cryptography.hazmat.primitives.kdfrr rrrrrs   "