U ŽûabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789csd ‡fdd„t|ƒDƒ¡S)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 Úc3s|]}t ˆ¡VqdS©N)ÚsecretsÚchoice)Ú.0Úi©Ú allowed_charsr r Ú >sz$get_random_string..)ÚjoinÚrange)Úlengthr r rr Úget_random_string3s r%cCst t|ƒt|ƒ¡S)z:Return True if the two strings are equal, False otherwise.)rZcompare_digestr)Zval1Zval2r r r Úconstant_time_compareAsr&cCs<|dkrtj}|pd}t|ƒ}t|ƒ}t |ƒj||||¡S)z)Return the hash of password using pbkdf2.N)rZsha256rZ pbkdf2_hmacÚname)ÚpasswordZsaltZ iterationsZdklenrr r r Úpbkdf2Fs r)ÚusedforsecurityóT)r*cCs t |¡Sr)rÚmd5)Údatar*r r r r,Ysr,cCs t |¡Sr)rr)Zhash_algorithmr*r r r Únew_hash\sr.)N)rN)r+)r rrrÚ django.confrZdjango.utils.encodingrÚdjango.utils.inspectrÚ ValueErrorrrZRANDOM_STRING_CHARSr%r&r)r,rr.r r r r Ús"