v^h@sdZddlZddlZddlZddlmZddlmZdddZddd d Z d d Z ddd dZ dS)z3 Django's standard crypto functions and utilities. N)settings) force_bytescCsh|dkrtj}t|}t|}tj||j}tj|dt|dtjS)z Return the HMAC-SHA1 of 'value', using a key generated from key_salt and a secret (which defaults to settings.SECRET_KEY). A different key_salt should be passed in for every application of HMAC. Nmsg digestmod)rZ SECRET_KEYrhashlibsha1digesthmacnew)Zkey_saltvalueZsecretkeyr 5/tmp/pip-build-8lau8j11/django/django/utils/crypto.py salted_hmac s     r Z>abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789cs&djfddt|DS)z Return a securely generated random string. The default length of 12 with the a-z, A-Z, 0-9 character set returns a 71-bit value. log_2((26+26+10)^12) =~ 71 bits c3s|]}tjVqdS)N)secretschoice).0i) allowed_charsr r .sz$get_random_string..)joinrange)lengthrr )rrget_random_string%s rcCstjt|t|S)z:Return True if the two strings are equal, False otherwise.)rcompare_digestr)Zval1Zval2r r rconstant_time_compare1srcCsX|dkrtj}|pd}t|}t|}tj|j||||S)z)Return the hash of password using pbkdf2.N)rsha256r pbkdf2_hmacname)passwordZsaltZ iterationsZdklenrr r rpbkdf26s      r") __doc__rr rZ django.confrZdjango.utils.encodingrrrrr"r r r rs