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passlib.handlers.cisco -- Cisco password hashes
i����(thexlifyt	unhexlify(tmd5N(twarn(tright_pad_stringt
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repeat_stringtto_bytes(th64(tunicodetutjoin_byte_valuestjoin_byte_elemstiter_byte_valuest
uascii_to_strt	cisco_pixt	cisco_asatcisco_type7s�i cBsDeZdZdZdZeZeZdZe	j
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    This class implements the password hash used by older Cisco PIX firewalls,
    and follows the :ref:`password-hash-api`.
    It does a single round of hashing, and relies on the username
    as the salt.

    This class only allows passwords <= 16 bytes, anything larger
    will result in a :exc:`~passlib.exc.PasswordSizeError` if passed to :meth:`~cisco_pix.hash`,
    and be silently rejected if passed to :meth:`~cisco_pix.verify`.

    The :meth:`~passlib.ifc.PasswordHash.hash`,
    :meth:`~passlib.ifc.PasswordHash.genhash`, and
    :meth:`~passlib.ifc.PasswordHash.verify` methods
    all support the following extra keyword:

    :param str user:
        String containing name of user account this password is associated with.

        This is *required* in order to correctly hash passwords associated
        with a user account on the Cisco device, as it is used to salt
        the hash.

        Conversely, this *must* be omitted or set to ``""`` in order to correctly
        hash passwords which don't have an associated user account
        (such as the "enable" password).

    .. versionadded:: 1.6

    .. versionchanged:: 1.7.1

        Passwords > 16 bytes are now rejected / throw error instead of being silently truncated,
        to match Cisco behavior.  A number of :ref:`bugs <passlib-asa96-bug>` were fixed
        which caused prior releases to generate unverifiable hashes in certain cases.
    RicCs~|j}t|t�r*|jd�}nd
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}|r�t|t�r�|jd�}n|s�t|�dkr�|t|d�7}q�n|rt|�dkrd}nd}t||�}|r:||7}nt|�j�}td�t|�D��}tj|�jd	�S(s7
        This function implements the "encrypted" hash format used by Cisco
        PIX & ASA. It's behavior has been confirmed for ASA 9.6,
        but is presumed correct for PIX & other ASA releases,
        as it fits with known test vectors, and existing literature.

        While nearly the same, the PIX & ASA hashes have slight differences,
        so this function performs differently based on the _is_asa class flag.
        Noteable changes from PIX to ASA include password size limit
        increased from 16 -> 32, and other internal changes.
        sutf-8s.Password too long (%s allows at most %d bytes)tmsgiiii css)|]\}}|dd@r|VqdS(iiN((t.0titc((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pys	<genexpr>�stasciiN(t_is_asat
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truncate_sizetuse_defaultstnametuhtexctPasswordSizeErrort_DUMMY_BYTEStuserRRRtdigestRt	enumerateRtencode_bytestdecode(tselftsecrettasatspoil_digestRR#tpad_sizeR$((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyt_calc_checksumgs2
		
	
	
(t__name__t
__module__t__doc__RRtTruettruncate_errorttruncate_verify_rejectt
checksum_sizeRtHASH64_CHARStchecksum_charstFalseRR-(((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyR$s"	cBs eZdZdZdZeZRS(s�
    This class implements the password hash used by Cisco ASA/PIX 7.0 and newer (2005).
    Aside from a different internal algorithm, it's use and format is identical
    to the older :class:`cisco_pix` class.

    For passwords less than 13 characters, this should be identical to :class:`!cisco_pix`,
    but will generate a different hash for most larger inputs
    (See the `Format & Algorithm`_ section for the details).

    This class only allows passwords <= 32 bytes, anything larger
    will result in a :exc:`~passlib.exc.PasswordSizeError` if passed to :meth:`~cisco_asa.hash`,
    and be silently rejected if passed to :meth:`~cisco_asa.verify`.

    .. versionadded:: 1.7

    .. versionchanged:: 1.7.1

        Passwords > 32 bytes are now rejected / throw error instead of being silently truncated,
        to match Cisco behavior.  A number of :ref:`bugs <passlib-asa96-bug>` were fixed
        which caused prior releases to generate unverifiable hashes in certain cases.
    Ri (R.R/R0RRR1R(((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyR�scBs�eZdZdZdZejZdZdZ	e
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    This class implements the "Type 7" password encoding used by Cisco IOS,
    and follows the :ref:`password-hash-api`.
    It has a simple 4-5 bit salt, but is nonetheless a reversible encoding
    instead of a real hash.

    The :meth:`~passlib.ifc.PasswordHash.using` method accepts the following optional keywords:

    :type salt: int
    :param salt:
        This may be an optional salt integer drawn from ``range(0,16)``.
        If omitted, one will be chosen at random.

    :type relaxed: bool
    :param relaxed:
        By default, providing an invalid value for one of the other
        keywords will result in a :exc:`ValueError`. If ``relaxed=True``,
        and the error can be corrected, a :exc:`~passlib.exc.PasslibHashWarning`
        will be issued instead. Correctable errors include
        ``salt`` values that are out of range.

    Note that while this class outputs digests in upper-case hexadecimal,
    it will accept lower-case as well.

    This class also provides the following additional method:

    .. automethod:: decode
    Rtsaltii4csatt|�j|�}�dk	r]|j�d|jd���t�fd��|_n|S(Ntrelaxedcs�S(N(((R8(s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyt<lambda>fs(tsuperRtusingRt
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cKs�tt|�j|�|dk	r4|j|�}nL|jrt|j�}|j|�|ks�td|f��ntd��||_	dS(Nsgenerated invalid salt: %rsno salt specified(
R;Rt__init__RR=RR@tAssertionErrort	TypeErrorR8(R(R8RB((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyRJqs	+cCs�t|t�s*tjj|dd��nd|koD|jknrM|Sd}|r�t|tj�|dkrydS|jSt|��dS(s�
        validate & normalize salt value.
        .. note::
            the salt for this algorithm is an integer 0-52, not a string
        tintegerR8is"salt/offset must be in 0..52 rangeN(	RRGRR tExpectedTypeErrortmax_salt_valueRtPasslibHashWarningt
ValueError(RAR8R9R((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyR=|scCstjjdd�S(Nii(Rtrngtrandint(((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyR@�scCsd|jt|j�fS(Ns%02d%s(R8RRE(R(((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyt	to_string�scCsIt|t�r!|jd�}nt|j||j��jd�j�S(Nsutf-8R(RR	RRt_cipherR8R'RH(R(R)((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyR-�ssutf-8cCsS|j|�}t|jjd��}|j||j�}|rO|j|�S|S(s�decode hash, returning original password.

        :arg hash: encoded password
        :param encoding: optional encoding to use (defaults to ``UTF-8``).
        :returns: password as unicode
        R(RIRRERRUR8R'(RARDtencodingR(ttmptraw((s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pyR'�ss5dsfd;kfoA,.iyewrkldJKDHSUBsgvca69834ncxv9873254k;fg87csA|j�t���t���fd�tt|��D��S(s1xor static key against data - encrypts & decryptsc3s1|]'\}}|t��|��AVqdS(N(tord(Rtidxtvalue(tkeytkey_sizeR8(s:/usr/lib/python2.7/site-packages/passlib/handlers/cisco.pys	<genexpr>�s(t_keyRRR%R
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	(ssaltN(R.R/R0Rtsetting_kwdsRtUPPER_HEX_CHARSR6tmin_salt_valueROtclassmethodRR<RIRJR7R=R?R@RTR-R'R
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