FM / paramiko

/opt/imh-python/lib/python3.9/site-packages/paramiko/

/opt/imh-python/lib/python3.9/site-packages/paramiko

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
agent.py	15877	0644	edit dl rm
auth_handler.py	42964	0644	edit dl rm
auth_handler.py.orig	43006	0644	edit dl rm
auth_strategy.py	11437	0644	edit dl rm
ber.py	4369	0644	edit dl rm
buffered_pipe.py	7225	0644	edit dl rm
channel.py	49222	0644	edit dl rm
client.py	34492	0644	edit dl rm
common.py	7756	0644	edit dl rm
compress.py	1282	0644	edit dl rm
config.py	27362	0644	edit dl rm
dsskey.py	8248	0644	edit dl rm
ecdsakey.py	11653	0644	edit dl rm
ed25519key.py	7457	0644	edit dl rm
file.py	19063	0644	edit dl rm
hostkeys.py	13208	0644	edit dl rm
kex_curve25519.py	4436	0644	edit dl rm
kex_ecdh_nist.py	5012	0644	edit dl rm
kex_gex.py	10320	0644	edit dl rm
kex_group1.py	5740	0644	edit dl rm
kex_group14.py	1833	0644	edit dl rm
kex_group16.py	2288	0644	edit dl rm
kex_gss.py	24562	0644	edit dl rm
message.py	9349	0644	edit dl rm
packet.py	24314	0644	edit dl rm
pipe.py	3902	0644	edit dl rm
pkey.py	36851	0644	edit dl rm
primes.py	5107	0644	edit dl rm
proxy.py	4648	0644	edit dl rm
rsakey.py	7546	0644	edit dl rm
server.py	30457	0644	edit dl rm
sftp.py	6471	0644	edit dl rm
sftp_attr.py	8258	0644	edit dl rm
sftp_client.py	35855	0644	edit dl rm
sftp_file.py	21820	0644	edit dl rm
sftp_handle.py	7424	0644	edit dl rm
sftp_server.py	19492	0644	edit dl rm
sftp_si.py	12544	0644	edit dl rm
ssh_exception.py	7494	0644	edit dl rm
ssh_gss.py	28887	0644	edit dl rm
transport.py	135632	0644	edit dl rm
util.py	9550	0644	edit dl rm
win_openssh.py	1918	0644	edit dl rm
win_pageant.py	4177	0644	edit dl rm
_version.py	80	0644	edit dl rm
_winapi.py	11204	0644	edit dl rm
__init__.py	4446	0644	edit dl rm

Edit: /opt/imh-python/lib/python3.9/site-packages/paramiko/dsskey.py (8248B)

# Copyright (C) 2003-2007  Robey Pointer <robeypointer@gmail.com>
#
# This file is part of paramiko.
#
# Paramiko is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
#
# Paramiko is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.

"""
DSS keys.
"""

from cryptography.exceptions import InvalidSignature
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.asymmetric import dsa
from cryptography.hazmat.primitives.asymmetric.utils import (
    decode_dss_signature,
    encode_dss_signature,
)

from paramiko import util
from paramiko.common import zero_byte
from paramiko.ssh_exception import SSHException
from paramiko.message import Message
from paramiko.ber import BER, BERException
from paramiko.pkey import PKey

class DSSKey(PKey):
    """
    Representation of a DSS key which can be used to sign an verify SSH2
    data.
    """

name = "ssh-dss"

def __init__(
        self,
        msg=None,
        data=None,
        filename=None,
        password=None,
        vals=None,
        file_obj=None,
    ):
        self.p = None
        self.q = None
        self.g = None
        self.y = None
        self.x = None
        self.public_blob = None
        if file_obj is not None:
            self._from_private_key(file_obj, password)
            return
        if filename is not None:
            self._from_private_key_file(filename, password)
            return
        if (msg is None) and (data is not None):
            msg = Message(data)
        if vals is not None:
            self.p, self.q, self.g, self.y = vals
        else:
            self._check_type_and_load_cert(
                msg=msg,
                key_type=self.name,
                cert_type=f"{self.name}-cert-v01@openssh.com",
            )
            self.p = msg.get_mpint()
            self.q = msg.get_mpint()
            self.g = msg.get_mpint()
            self.y = msg.get_mpint()
        self.size = util.bit_length(self.p)

def asbytes(self):
        m = Message()
        m.add_string(self.name)
        m.add_mpint(self.p)
        m.add_mpint(self.q)
        m.add_mpint(self.g)
        m.add_mpint(self.y)
        return m.asbytes()

def __str__(self):
        return self.asbytes()

@property
    def _fields(self):
        return (self.get_name(), self.p, self.q, self.g, self.y)

# TODO 4.0: remove
    def get_name(self):
        return self.name

def get_bits(self):
        return self.size

def can_sign(self):
        return self.x is not None

def sign_ssh_data(self, data, algorithm=None):
        key = dsa.DSAPrivateNumbers(
            x=self.x,
            public_numbers=dsa.DSAPublicNumbers(
                y=self.y,
                parameter_numbers=dsa.DSAParameterNumbers(
                    p=self.p, q=self.q, g=self.g
                ),
            ),
        ).private_key(backend=default_backend())
        sig = key.sign(data, hashes.SHA1())
        r, s = decode_dss_signature(sig)

m = Message()
        m.add_string(self.name)
        # apparently, in rare cases, r or s may be shorter than 20 bytes!
        rstr = util.deflate_long(r, 0)
        sstr = util.deflate_long(s, 0)
        if len(rstr) < 20:
            rstr = zero_byte * (20 - len(rstr)) + rstr
        if len(sstr) < 20:
            sstr = zero_byte * (20 - len(sstr)) + sstr
        m.add_string(rstr + sstr)
        return m

def verify_ssh_sig(self, data, msg):
        if len(msg.asbytes()) == 40:
            # spies.com bug: signature has no header
            sig = msg.asbytes()
        else:
            kind = msg.get_text()
            if kind != self.name:
                return 0
            sig = msg.get_binary()

# pull out (r, s) which are NOT encoded as mpints
        sigR = util.inflate_long(sig[:20], 1)
        sigS = util.inflate_long(sig[20:], 1)

signature = encode_dss_signature(sigR, sigS)

key = dsa.DSAPublicNumbers(
            y=self.y,
            parameter_numbers=dsa.DSAParameterNumbers(
                p=self.p, q=self.q, g=self.g
            ),
        ).public_key(backend=default_backend())
        try:
            key.verify(signature, data, hashes.SHA1())
        except InvalidSignature:
            return False
        else:
            return True

def write_private_key_file(self, filename, password=None):
        key = dsa.DSAPrivateNumbers(
            x=self.x,
            public_numbers=dsa.DSAPublicNumbers(
                y=self.y,
                parameter_numbers=dsa.DSAParameterNumbers(
                    p=self.p, q=self.q, g=self.g
                ),
            ),
        ).private_key(backend=default_backend())

self._write_private_key_file(
            filename,
            key,
            serialization.PrivateFormat.TraditionalOpenSSL,
            password=password,
        )

def write_private_key(self, file_obj, password=None):
        key = dsa.DSAPrivateNumbers(
            x=self.x,
            public_numbers=dsa.DSAPublicNumbers(
                y=self.y,
                parameter_numbers=dsa.DSAParameterNumbers(
                    p=self.p, q=self.q, g=self.g
                ),
            ),
        ).private_key(backend=default_backend())

self._write_private_key(
            file_obj,
            key,
            serialization.PrivateFormat.TraditionalOpenSSL,
            password=password,
        )

@staticmethod
    def generate(bits=1024, progress_func=None):
        """
        Generate a new private DSS key.  This factory function can be used to
        generate a new host key or authentication key.

:param int bits: number of bits the generated key should be.
        :param progress_func: Unused
        :return: new `.DSSKey` private key
        """
        numbers = dsa.generate_private_key(
            bits, backend=default_backend()
        ).private_numbers()
        key = DSSKey(
            vals=(
                numbers.public_numbers.parameter_numbers.p,
                numbers.public_numbers.parameter_numbers.q,
                numbers.public_numbers.parameter_numbers.g,
                numbers.public_numbers.y,
            )
        )
        key.x = numbers.x
        return key

# ...internals...

def _from_private_key_file(self, filename, password):
        data = self._read_private_key_file("DSA", filename, password)
        self._decode_key(data)

def _from_private_key(self, file_obj, password):
        data = self._read_private_key("DSA", file_obj, password)
        self._decode_key(data)

def _decode_key(self, data):
        pkformat, data = data
        # private key file contains:
        # DSAPrivateKey = { version = 0, p, q, g, y, x }
        if pkformat == self._PRIVATE_KEY_FORMAT_ORIGINAL:
            try:
                keylist = BER(data).decode()
            except BERException as e:
                raise SSHException("Unable to parse key file: {}".format(e))
        elif pkformat == self._PRIVATE_KEY_FORMAT_OPENSSH:
            keylist = self._uint32_cstruct_unpack(data, "iiiii")
            keylist = [0] + list(keylist)
        else:
            self._got_bad_key_format_id(pkformat)
        if type(keylist) is not list or len(keylist) < 6 or keylist[0] != 0:
            raise SSHException(
                "not a valid DSA private key file (bad ber encoding)"
            )
        self.p = keylist[1]
        self.q = keylist[2]
        self.g = keylist[3]
        self.y = keylist[4]
        self.x = keylist[5]
        self.size = util.bit_length(self.p)

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