U |e @sdZddlZddlZddlZddlmZddlmZddlm Z Gddde Z ddd d d Z d Z e fd dZddZdddZe ejdrejZejZndddddZddddZdS)z3 Django's standard crypto functions and utilities. N)settings) force_bytes)func_supports_parameterc@seZdZdZdS)InvalidAlgorithmz&Algorithm is not supported by hashlib.N)__name__ __module__ __qualname____doc__r r P/var/www/website-v5/atlas_env/lib/python3.8/site-packages/django/utils/crypto.pyr srsha1) algorithmc Cs|dkrtj}t|}t|}ztt|}Wn0tk r\}ztd||W5d}~XYnX|||}tj |t||dS)a* Return the HMAC of 'value', using a key generated from key_salt and a secret (which defaults to settings.SECRET_KEY). Default algorithm is SHA1, but any algorithm name supported by hashlib can be passed. A different key_salt should be passed in for every application of HMAC. Nz6%r is not an algorithm accepted by the hashlib module.)msgZ digestmod) r SECRET_KEYrgetattrhashlibAttributeErrorrdigesthmacnew)Zkey_saltvalueZsecretr Zhasherekeyr r r salted_hmacsrZ>abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789csdfddt|DS)aG Return a securely generated random string. The bit length of the returned value can be calculated with the formula: log_2(len(allowed_chars)^length) For example, with default `allowed_chars` (26+26+10), this gives: * length: 12, bit length =~ 71 bits * length: 22, bit length =~ 131 bits c3s|]}tVqdSN)secretschoice).0i allowed_charsr r >sz$get_random_string..)joinrange)Zlengthr!r r r get_random_string3s r%cCstt|t|S)z:Return True if the two strings are equal, False otherwise.)rZcompare_digestr)Zval1Zval2r r r constant_time_compareAsr&cCs<|dkrtj}|pd}t|}t|}t|j||||S)z)Return the hash of password using pbkdf2.N)rsha256rZ pbkdf2_hmacname)passwordsaltZ iterationsZdklenrr r r pbkdf2Fs r+usedforsecurityT)r,cCs t|Sr)rmd5)datar,r r r r.Ysr.cCs t|Sr)rr)Zhash_algorithmr,r r r new_hash\sr0)N)rN)r-)r rrr django.confrdjango.utils.encodingrdjango.utils.inspectr ValueErrorrrZRANDOM_STRING_CHARSr%r&r+r.rr0r r r r s"