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Name	Size	Permission
__init__.py	86 B	-rw-r--r--
__init__.pyc	250 B	-rw-r--r--
__init__.pyo	250 B	-rw-r--r--
argon2.py	31.27 KB	-rw-r--r--
argon2.pyc	19.42 KB	-rw-r--r--
argon2.pyo	19.11 KB	-rw-r--r--
bcrypt.py	41.33 KB	-rw-r--r--
bcrypt.pyc	27.11 KB	-rw-r--r--
bcrypt.pyo	26.58 KB	-rw-r--r--
cisco.py	15.9 KB	-rw-r--r--
cisco.pyc	11.1 KB	-rw-r--r--
cisco.pyo	11.01 KB	-rw-r--r--
des_crypt.py	21.74 KB	-rw-r--r--
des_crypt.pyc	17.13 KB	-rw-r--r--
des_crypt.pyo	16.87 KB	-rw-r--r--
digests.py	5.32 KB	-rw-r--r--
digests.pyc	4.93 KB	-rw-r--r--
digests.pyo	4.93 KB	-rw-r--r--
django.py	19.55 KB	-rw-r--r--
django.pyc	18.76 KB	-rw-r--r--
django.pyo	18.76 KB	-rw-r--r--
fshp.py	7.62 KB	-rw-r--r--
fshp.pyc	6.42 KB	-rw-r--r--
fshp.pyo	6.33 KB	-rw-r--r--
ldap_digests.py	9.87 KB	-rw-r--r--
ldap_digests.pyc	10.21 KB	-rw-r--r--
ldap_digests.pyo	10.18 KB	-rw-r--r--
md5_crypt.py	13.37 KB	-rw-r--r--
md5_crypt.pyc	8.06 KB	-rw-r--r--
md5_crypt.pyo	7.79 KB	-rw-r--r--
misc.py	9.87 KB	-rw-r--r--
misc.pyc	9.46 KB	-rw-r--r--
misc.pyo	9.41 KB	-rw-r--r--
mssql.py	8.28 KB	-rw-r--r--
mssql.pyc	7.81 KB	-rw-r--r--
mssql.pyo	7.71 KB	-rw-r--r--
mysql.py	4.68 KB	-rw-r--r--
mysql.pyc	3.94 KB	-rw-r--r--
mysql.pyo	3.94 KB	-rw-r--r--
oracle.py	6.53 KB	-rw-r--r--
oracle.pyc	5.68 KB	-rw-r--r--
oracle.pyo	5.68 KB	-rw-r--r--
pbkdf2.py	18.56 KB	-rw-r--r--
pbkdf2.pyc	15.33 KB	-rw-r--r--
pbkdf2.pyo	15.33 KB	-rw-r--r--
phpass.py	4.67 KB	-rw-r--r--
phpass.pyc	4.22 KB	-rw-r--r--
phpass.pyo	4.22 KB	-rw-r--r--
postgres.py	2.22 KB	-rw-r--r--
postgres.pyc	1.88 KB	-rw-r--r--
postgres.pyo	1.88 KB	-rw-r--r--
roundup.py	1.15 KB	-rw-r--r--
roundup.pyc	781 B	-rw-r--r--
roundup.pyo	781 B	-rw-r--r--
scram.py	22.01 KB	-rw-r--r--
scram.pyc	12.52 KB	-rw-r--r--
scram.pyo	12.43 KB	-rw-r--r--
scrypt.py	13.81 KB	-rw-r--r--
scrypt.pyc	10.2 KB	-rw-r--r--
scrypt.pyo	9.97 KB	-rw-r--r--
sha1_crypt.py	5.69 KB	-rw-r--r--
sha1_crypt.pyc	5.14 KB	-rw-r--r--
sha1_crypt.pyo	5.04 KB	-rw-r--r--
sha2_crypt.py	20.67 KB	-rw-r--r--
sha2_crypt.pyc	12.61 KB	-rw-r--r--
sha2_crypt.pyo	12.18 KB	-rw-r--r--
sun_md5_crypt.py	13.61 KB	-rw-r--r--
sun_md5_crypt.pyc	10.03 KB	-rw-r--r--
sun_md5_crypt.pyo	9.92 KB	-rw-r--r--
windows.py	12.09 KB	-rw-r--r--
windows.pyc	10.19 KB	-rw-r--r--
windows.pyo	10.19 KB	-rw-r--r--

Code Editor : oracle.py

"""passlib.handlers.oracle - Oracle DB Password Hashes"""
#=============================================================================
# imports
#=============================================================================
# core
from binascii import hexlify, unhexlify
from hashlib import sha1
import re
import logging; log = logging.getLogger(__name__)
# site
# pkg
from passlib.utils import to_unicode, xor_bytes
from passlib.utils.compat import irange, u, \
                                 uascii_to_str, unicode, str_to_uascii
from passlib.crypto.des import des_encrypt_block
import passlib.utils.handlers as uh
# local
__all__ = [
    "oracle10g",
    "oracle11g"
]

#=============================================================================
# oracle10
#=============================================================================
def des_cbc_encrypt(key, value, iv=b'\x00' * 8, pad=b'\x00'):
    """performs des-cbc encryption, returns only last block.

this performs a specific DES-CBC encryption implementation
    as needed by the Oracle10 hash. it probably won't be useful for
    other purposes as-is.

input value is null-padded to multiple of 8 bytes.

:arg key: des key as bytes
    :arg value: value to encrypt, as bytes.
    :param iv: optional IV
    :param pad: optional pad byte

:returns: last block of DES-CBC encryption of all ``value``'s byte blocks.
    """
    value += pad * (-len(value) % 8) # null pad to multiple of 8
    hash = iv # start things off
    for offset in irange(0,len(value),8):
        chunk = xor_bytes(hash, value[offset:offset+8])
        hash = des_encrypt_block(key, chunk)
    return hash

# magic string used as initial des key by oracle10
ORACLE10_MAGIC = b"\x01\x23\x45\x67\x89\xAB\xCD\xEF"

class oracle10(uh.HasUserContext, uh.StaticHandler):
    """This class implements the password hash used by Oracle up to version 10g, and follows the :ref:`password-hash-api`.

It does a single round of hashing, and relies on the username as the salt.

The :meth:`~passlib.ifc.PasswordHash.hash`, :meth:`~passlib.ifc.PasswordHash.genhash`, and :meth:`~passlib.ifc.PasswordHash.verify` methods all require the
    following additional contextual keywords:

:type user: str
    :param user: name of oracle user account this password is associated with.
    """
    #===================================================================
    # algorithm information
    #===================================================================
    name = "oracle10"
    checksum_chars = uh.HEX_CHARS
    checksum_size = 16

#===================================================================
    # methods
    #===================================================================
    @classmethod
    def _norm_hash(cls, hash):
        return hash.upper()

def _calc_checksum(self, secret):
        # FIXME: not sure how oracle handles unicode.
        #        online docs about 10g hash indicate it puts ascii chars
        #        in a 2-byte encoding w/ the high byte set to null.
        #        they don't say how it handles other chars, or what encoding.
        #
        #        so for now, encoding secret & user to utf-16-be,
        #        since that fits, and if secret/user is bytes,
        #        we assume utf-8, and decode first.
        #
        #        this whole mess really needs someone w/ an oracle system,
        #        and some answers :)
        if isinstance(secret, bytes):
            secret = secret.decode("utf-8")
        user = to_unicode(self.user, "utf-8", param="user")
        input = (user+secret).upper().encode("utf-16-be")
        hash = des_cbc_encrypt(ORACLE10_MAGIC, input)
        hash = des_cbc_encrypt(hash, input)
        return hexlify(hash).decode("ascii").upper()

#===================================================================
    # eoc
    #===================================================================

#=============================================================================
# oracle11
#=============================================================================
class oracle11(uh.HasSalt, uh.GenericHandler):
    """This class implements the Oracle11g password hash, and follows the :ref:`password-hash-api`.

It supports a fixed-length salt.

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

:type salt: str
    :param salt:
        Optional salt string.
        If not specified, one will be autogenerated (this is recommended).
        If specified, it must be 20 hexadecimal characters.

: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`` strings that are too long.

.. versionadded:: 1.6
    """
    #===================================================================
    # class attrs
    #===================================================================
    #--GenericHandler--
    name = "oracle11"
    setting_kwds = ("salt",)
    checksum_size = 40
    checksum_chars = uh.UPPER_HEX_CHARS

#--HasSalt--
    min_salt_size = max_salt_size = 20
    salt_chars = uh.UPPER_HEX_CHARS

#===================================================================
    # methods
    #===================================================================
    _hash_regex = re.compile(u("^S:(?P<chk>[0-9a-f]{40})(?P<salt>[0-9a-f]{20})$"), re.I)

@classmethod
    def from_string(cls, hash):
        hash = to_unicode(hash, "ascii", "hash")
        m = cls._hash_regex.match(hash)
        if not m:
            raise uh.exc.InvalidHashError(cls)
        salt, chk = m.group("salt", "chk")
        return cls(salt=salt, checksum=chk.upper())

def to_string(self):
        chk = self.checksum
        hash = u("S:%s%s") % (chk.upper(), self.salt.upper())
        return uascii_to_str(hash)

def _calc_checksum(self, secret):
        if isinstance(secret, unicode):
            secret = secret.encode("utf-8")
        chk = sha1(secret + unhexlify(self.salt.encode("ascii"))).hexdigest()
        return str_to_uascii(chk).upper()

#===================================================================
    # eoc
    #===================================================================

#=============================================================================
# eof
#=============================================================================

${this.title}

Code Editor : oracle.py