ó õùPc@s dZddlmZddlmZddlTddlmZddlm Z ddl m Z ddl m Z mZdd lmZd efd „ƒYZd S( s L{DSSKey} iÿÿÿÿ(tDSA(tSHA(t*(tutil(t SSHException(tMessage(tBERt BERException(tPKeytDSSKeycBs¿eZdZddddddd„Zd„Zd„Zd„Zd„Zd„Z d„Z d„Z d „Z dd „Z dd „Zd dd „ZeeƒZd„Zd„Zd„ZRS(sX Representation of a DSS key which can be used to sign an verify SSH2 data. cCsRd|_d|_d|_d|_d|_|dk rM|j||ƒdS|dk rm|j||ƒdS|dkr”|dk r”t|ƒ}n|dk rÁ|\|_|_|_|_nx|dkrÜt dƒ‚n|j ƒdkrýt dƒ‚n|j ƒ|_|j ƒ|_|j ƒ|_|j ƒ|_t j |jƒ|_dS(NsKey object may not be emptysssh-dsss Invalid key(tNonetptqtgtytxt_from_private_keyt_from_private_key_fileRRt get_stringt get_mpintRt bit_lengthtsize(tselftmsgtdatatfilenametpasswordtvalstfile_obj((s*..\python\site-packages\paramiko\dsskey.pyt__init__(s0        ! cCs`tƒ}|jdƒ|j|jƒ|j|jƒ|j|jƒ|j|jƒt|ƒS(Nsssh-dss(Rt add_stringt add_mpintR R R Rtstr(Rtm((s*..\python\site-packages\paramiko\dsskey.pyt__str__Cs  cCsxt|jƒƒ}|dt|jƒ}|dt|jƒ}|dt|jƒ}|dt|jƒ}t|ƒS(Ni%(thashtget_nameR R R R(Rth((s*..\python\site-packages\paramiko\dsskey.pyt__hash__Ls cCsdS(Nsssh-dss((R((s*..\python\site-packages\paramiko\dsskey.pyR$UscCs|jS(N(R(R((s*..\python\site-packages\paramiko\dsskey.pytget_bitsXscCs |jdk S(N(RR (R((s*..\python\site-packages\paramiko\dsskey.pytcan_sign[sc Cstj|ƒjƒ}tjt|jƒt|jƒt|jƒt|j ƒt|j ƒfƒ}t t j |j dƒƒ}xDtrÁt j|j|ƒdƒ}|dkr~||j kr~Pq~q~W|jt j|dƒ|ƒ\}}tƒ} | jdƒt j |dƒ} t j |dƒ} t | ƒdkrMddt | ƒ| } nt | ƒdkrzddt | ƒ| } n| j| | ƒ| S(Niiisssh-dssit(RtnewtdigestRt constructtlongRR R R RtlenRt deflate_longtTruet inflate_longtreadtsignRR( RtrngRR+tdsstqsizetktrtsR!trstrtsstr((s*..\python\site-packages\paramiko\dsskey.pyt sign_ssh_data^s$K $  c Csñtt|ƒƒdkr't|ƒ}n(|jƒ}|dkrCdS|jƒ}tj|d dƒ}tj|ddƒ}tjtj|ƒjƒdƒ}tj t |j ƒt |j ƒt |j ƒt |jƒfƒ}|j|||fƒS(Ni(sssh-dssiii(R.R RRR1RR*R+RR,R-RR R R tverify( RRRtsigtkindtsigRtsigStsigMR5((s*..\python\site-packages\paramiko\dsskey.pytverify_ssh_sigts   !?cCs‰|jdkrtdƒ‚nd|j|j|j|j|jg}ytƒ}|j|ƒWnt k r~tdƒ‚nXt |ƒS(NsNot enough key informationis$Unable to create ber encoding of key( RR RR R R RRtencodeRR (Rtkeylisttb((s*..\python\site-packages\paramiko\dsskey.pyt _encode_key†s'  cCs |jd||jƒ|ƒdS(NR(t_write_private_key_fileRG(RRR((s*..\python\site-packages\paramiko\dsskey.pytwrite_private_key_file‘scCs |jd||jƒ|ƒdS(NR(t_write_private_keyRG(RRR((s*..\python\site-packages\paramiko\dsskey.pytwrite_private_key”sicCsOtj|tj|ƒ}td|j|j|j|jfƒ}|j |_ |S(sÑ Generate a new private DSS key. This factory function can be used to generate a new host key or authentication key. @param bits: number of bits the generated key should be. @type bits: int @param progress_func: an optional function to call at key points in key generation (used by C{pyCrypto.PublicKey}). @type progress_func: function @return: new private key @rtype: L{DSSKey} R( RtgenerateR4R2R R R R RR(tbitst progress_functdsatkey((s*..\python\site-packages\paramiko\dsskey.pyRL—s ' cCs&|jd||ƒ}|j|ƒdS(NR(t_read_private_key_filet _decode_key(RRRR((s*..\python\site-packages\paramiko\dsskey.pyR®scCs&|jd||ƒ}|j|ƒdS(NR(t_read_private_keyRR(RRRR((s*..\python\site-packages\paramiko\dsskey.pyR²scCsßyt|ƒjƒ}Wn)tk rA}tdt|ƒƒ‚nXt|ƒtk svt|ƒdksv|ddkr…tdƒ‚n|d|_|d|_ |d|_ |d|_ |d |_ t j|jƒ|_dS( NsUnable to parse key file: iis3not a valid DSA private key file (bad ber encoding)iiiii(RtdecodeRRR ttypetlistR.R R R RRRRR(RRRER((s*..\python\site-packages\paramiko\dsskey.pyRR¶s4     N(t__name__t __module__t__doc__R RR"R&R$R'R(R<RCRGRIRKRLt staticmethodRRRR(((s*..\python\site-packages\paramiko\dsskey.pyR "s"          N(RYtCrypto.PublicKeyRt Crypto.HashRtparamiko.commontparamikoRtparamiko.ssh_exceptionRtparamiko.messageRt paramiko.berRRt paramiko.pkeyRR (((s*..\python\site-packages\paramiko\dsskey.pyts