U “j@sJdZddlmZddlmZmZeeedZd ddZdd Zd d Z dS) z^ Calculations for HTTP Digest authentication. @see: U{http://www.faqs.org/rfcs/rfc2617.html} )hexlify)md5sha1)smd5md5-sesssshaNc Cs|r|s|s|rtd|dkrjt|}|||d|||d||t|}n|}|dkrt|}|||d|||d||t|}|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 argumentsN:r) TypeError algorithmsupdaterdigest) ZpszAlgZ pszUserNameZpszRealmZ pszPasswordpszNonce pszCNonceZpreHA1mHA1r8/tmp/pip-unpacked-wheel-59kc99xd/twisted/cred/_digest.pycalcHA1!s,             rcCsPt|}|||d|||dkrD|d||t|S)a Compute H(A2) from RFC 2617. @param algo: 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-intrr rr )algoZ pszMethodZ pszDigestUripszQopZ pszHEntityr rrrcalcHA2Ss      rc Cst|}|||d|||d|rv|rv|||d|||d|||d||t|}|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) rHA2rr Z pszNonceCountr rr ZrespHashrrr calcResponseks             r)N) __doc__binasciirhashlibrrrrrrrrrrs  2