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/ed25519key.py (7457B)

# 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.

import bcrypt

from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.ciphers import Cipher

import nacl.signing

from paramiko.message import Message
from paramiko.pkey import PKey, OPENSSH_AUTH_MAGIC, _unpad_openssh
from paramiko.util import b
from paramiko.ssh_exception import SSHException, PasswordRequiredException

class Ed25519Key(PKey):
    """
    Representation of an `Ed25519 <https://ed25519.cr.yp.to/>`_ key.

.. note::
        Ed25519 key support was added to OpenSSH in version 6.5.

.. versionadded:: 2.2
    .. versionchanged:: 2.3
        Added a ``file_obj`` parameter to match other key classes.
    """

name = "ssh-ed25519"

def __init__(
        self, msg=None, data=None, filename=None, password=None, file_obj=None
    ):
        self.public_blob = None
        verifying_key = signing_key = None
        if msg is None and data is not None:
            msg = Message(data)
        if msg is not None:
            self._check_type_and_load_cert(
                msg=msg,
                key_type=self.name,
                cert_type="ssh-ed25519-cert-v01@openssh.com",
            )
            verifying_key = nacl.signing.VerifyKey(msg.get_binary())
        elif filename is not None:
            with open(filename, "r") as f:
                pkformat, data = self._read_private_key("OPENSSH", f)
        elif file_obj is not None:
            pkformat, data = self._read_private_key("OPENSSH", file_obj)

if filename or file_obj:
            signing_key = self._parse_signing_key_data(data, password)

if signing_key is None and verifying_key is None:
            raise ValueError("need a key")

self._signing_key = signing_key
        self._verifying_key = verifying_key

def _parse_signing_key_data(self, data, password):
        from paramiko.transport import Transport

# We may eventually want this to be usable for other key types, as
        # OpenSSH moves to it, but for now this is just for Ed25519 keys.
        # This format is described here:
        # https://github.com/openssh/openssh-portable/blob/master/PROTOCOL.key
        # The description isn't totally complete, and I had to refer to the
        # source for a full implementation.
        message = Message(data)
        if message.get_bytes(len(OPENSSH_AUTH_MAGIC)) != OPENSSH_AUTH_MAGIC:
            raise SSHException("Invalid key")

ciphername = message.get_text()
        kdfname = message.get_text()
        kdfoptions = message.get_binary()
        num_keys = message.get_int()

if kdfname == "none":
            # kdfname of "none" must have an empty kdfoptions, the ciphername
            # must be "none"
            if kdfoptions or ciphername != "none":
                raise SSHException("Invalid key")
        elif kdfname == "bcrypt":
            if not password:
                raise PasswordRequiredException(
                    "Private key file is encrypted"
                )
            kdf = Message(kdfoptions)
            bcrypt_salt = kdf.get_binary()
            bcrypt_rounds = kdf.get_int()
        else:
            raise SSHException("Invalid key")

if ciphername != "none" and ciphername not in Transport._cipher_info:
            raise SSHException("Invalid key")

public_keys = []
        for _ in range(num_keys):
            pubkey = Message(message.get_binary())
            if pubkey.get_text() != self.name:
                raise SSHException("Invalid key")
            public_keys.append(pubkey.get_binary())

private_ciphertext = message.get_binary()
        if ciphername == "none":
            private_data = private_ciphertext
        else:
            cipher = Transport._cipher_info[ciphername]
            key = bcrypt.kdf(
                password=b(password),
                salt=bcrypt_salt,
                desired_key_bytes=cipher["key-size"] + cipher["block-size"],
                rounds=bcrypt_rounds,
                # We can't control how many rounds are on disk, so no sense
                # warning about it.
                ignore_few_rounds=True,
            )
            decryptor = Cipher(
                cipher["class"](key[: cipher["key-size"]]),
                cipher["mode"](key[cipher["key-size"] :]),
                backend=default_backend(),
            ).decryptor()
            private_data = (
                decryptor.update(private_ciphertext) + decryptor.finalize()
            )

message = Message(_unpad_openssh(private_data))
        if message.get_int() != message.get_int():
            raise SSHException("Invalid key")

signing_keys = []
        for i in range(num_keys):
            if message.get_text() != self.name:
                raise SSHException("Invalid key")
            # A copy of the public key, again, ignore.
            public = message.get_binary()
            key_data = message.get_binary()
            # The second half of the key data is yet another copy of the public
            # key...
            signing_key = nacl.signing.SigningKey(key_data[:32])
            # Verify that all the public keys are the same...
            assert (
                signing_key.verify_key.encode()
                == public
                == public_keys[i]
                == key_data[32:]
            )
            signing_keys.append(signing_key)
            # Comment, ignore.
            message.get_binary()

if len(signing_keys) != 1:
            raise SSHException("Invalid key")
        return signing_keys[0]

def asbytes(self):
        if self.can_sign():
            v = self._signing_key.verify_key
        else:
            v = self._verifying_key
        m = Message()
        m.add_string(self.name)
        m.add_string(v.encode())
        return m.asbytes()

@property
    def _fields(self):
        if self.can_sign():
            v = self._signing_key.verify_key
        else:
            v = self._verifying_key
        return (self.get_name(), v)

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

def get_bits(self):
        return 256

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

def sign_ssh_data(self, data, algorithm=None):
        m = Message()
        m.add_string(self.name)
        m.add_string(self._signing_key.sign(data).signature)
        return m

def verify_ssh_sig(self, data, msg):
        if msg.get_text() != self.name:
            return False

try:
            self._verifying_key.verify(data, msg.get_binary())
        except nacl.exceptions.BadSignatureError:
            return False
        else:
            return True

cmd: