ó ƽòec@sdZddlmZddlmZddlmZmZy@ddlm Z ddl m Z m Z ddl mZeZWnek r•eZnXdd lmZdd lZdd lZdd lZdd lZeZd Zeejd ƒZd „Zd„ZdZde fd„ƒYZ!d„Z"d„Z#ea$d„Z%d„Z&d„Z'd„Z(d„Z)d„Z*d„Z+d„Z,d„Z-d S(s Implements auth methods i(tPY2(tOperationalError(tbyte2inttint2byteiÿÿÿÿ(tdefault_backend(t serializationthashes(tpadding(tpartialNitsha1cCsn|s dSt|ƒjƒ}t|ƒjƒ}tƒ}|j|t ƒ|j|ƒ|jƒ}t||ƒS(s'Scramble used for mysql_native_passwordt(tsha1_newtdigesttupdatetSCRAMBLE_LENGTHt _my_crypt(tpasswordtmessagetstage1tstage2tstresult((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pytscramble_native_password!s   cCs\t|ƒ}tr!t|ƒ}nx.tt|ƒƒD]}||c||NLLiiii@(twarningstwarnt_hash_password_323tSCRAMBLE_LENGTH_323tstructtunpackRtiotBytesIORtminRtwriteRtintR%tgetvalueR( RRt hash_passt hash_messaget hash_pass_nthash_message_ntrand_sttoutbuft_textratouttc((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pytscramble_old_passwordMs   $ "+   'cCsµd}d}d}xyg|D]}|dkrt|ƒ^qD]L}||d@|||d >d @N}||d >|Ad @}||d @}q>W|d@}|d@}tjd ||ƒS(Ni5W0PiiqV4t s i i i?iIÿÿÿÿiis>LL(R?s i i I€iÿÿÿI€iÿÿÿ(RR,tpack(Rtnrtaddtnr2txR=tr1tr2((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pyR*ds2"  cCs>yddlm}|aWntk r9tdƒ‚nXdS(Niÿÿÿÿ(tbindingss='pynacl' package is required for ed25519_password auth method(tnaclRGt_nacl_bindingst ImportErrort RuntimeError(RG((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pyt _init_naclzs   cCsct|ƒ}tt|dd@gƒƒ}tt|dd@dBgƒƒ}|t|dd!ƒ|S(Niiøiii@i(RR(ts32tbatba0tba31((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pyt _scalar_clampƒs !c Cs×tstƒntj|ƒjƒ}t|d ƒ}tj|d|ƒjƒ}tj|ƒ}tj|ƒ}tj|ƒ}tj|||ƒjƒ}tj|ƒ}tj||ƒ}tj ||ƒ} || S(snSign a random scramble with elliptic curve Ed25519. Secret and public key are derived from password. i ( RIRLthashlibtsha512R RQt!crypto_core_ed25519_scalar_reducet&crypto_scalarmult_ed25519_base_noclamptcrypto_core_ed25519_scalar_multcrypto_core_ed25519_scalar_add( RtscramblethRtrtRtAtktkstS((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pyted25519_passwordŠs cCs'|j|ƒ|jƒ}|jƒ|S(N(t write_packett _read_packett check_error(tconnt send_datatpkt((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pyt _roundtrip³s   cCsm|t }t|ƒ}t|ƒ}t|ƒ}x2tt|ƒƒD]}||c|||NR*RIRLRQR`RgRkRxRƒRŠR(((s:/navires/venv/lib/python2.7/site-packages/pymysql/_auth.pytsD             )