U  W[ć@sZdZddlmZmZddlmZddlmZmZeeedœZ d dd„Z d d „Z d d „Z dS)z^ Calculations for HTTP Digest authentication. @see: U{http://www.faqs.org/rfcs/rfc2617.html} é)ŚdivisionŚabsolute_import)Śhexlify)Śmd5Śsha1)smd5ómd5-sesssshaNc CsĀ|r|s|s|rtdƒ‚|dkrjt|ƒ}| |”| d”| |”| d”| |”t| ”ƒ}n|}|dkr¾t|ƒ}| |”| d”| |”| d”| |”t| ”ƒ}|S)a: Compute H(A1) from RFC 2617. @param pszAlg: The name of the algorithm to use to calculate the digest. Currently supported are md5, md5-sess, and sha. @param pszUserName: The username @param pszRealm: The realm @param pszPassword: The password @param pszNonce: The nonce @param pszCNonce: The cnonce @param preHA1: If available this is a str containing a previously calculated H(A1) as a hex string. If this is given then the values for pszUserName, pszRealm, and pszPassword must be L{None} and are ignored. zPpreHA1 is incompatible with the pszUserName, pszRealm, and pszPassword argumentsNó:r)Ś TypeErrorŚ algorithmsŚupdaterŚdigest) ZpszAlgZ pszUserNameZpszRealmZ pszPasswordŚpszNonceŚ pszCNonceZpreHA1ŚmŚHA1©rś6/usr/lib/python3/dist-packages/twisted/cred/_digest.pyŚcalcHA1$s(             rcCsPt|ƒ}| |”| d”| |”|dkrD| d”| |”t| ”ƒS)a÷ Compute H(A2) from RFC 2617. @param pszAlg: The name of the algorithm to use to calculate the digest. Currently supported are md5, md5-sess, and sha. @param pszMethod: The request method. @param pszDigestUri: The request URI. @param pszQop: The Quality-of-Protection value. @param pszHEntity: The hash of the entity body or L{None} if C{pszQop} is not C{'auth-int'}. @return: The hash of the A2 value for the calculation of the response digest. rsauth-int©r r rr )ŚalgoZ pszMethodZ pszDigestUriŚpszQopZ pszHEntityrrrrŚcalcHA2Ss      rc Cst|ƒ}| |”| d”| |”| d”|rv|rv| |”| d”| |”| d”| |”| d”| |”t| ”ƒ}|S)a Compute the digest for the given parameters. @param HA1: The H(A1) value, as computed by L{calcHA1}. @param HA2: The H(A2) value, as computed by L{calcHA2}. @param pszNonce: The challenge nonce. @param pszNonceCount: The (client) nonce count value for this response. @param pszCNonce: The client nonce. @param pszQop: The Quality-of-Protection value. rr) rZHA2rr Z pszNonceCountrrrZrespHashrrrŚ calcResponseks             r)N) Ś__doc__Z __future__rrZbinasciirZhashlibrrr rrrrrrrŚs  ō’ /