C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # Authors: # Jan Cholasta # # Copyright (C) 2012 Red Hat # see file 'COPYING' for use and warranty information # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # """ SSH utilities. """ import base64 import re import struct from hashlib import sha1 from hashlib import sha256 # pylint: disable=E0611 import six if six.PY3: unicode = str __all__ = ['SSHPublicKey'] OPENSSH_BASE_REGEX = re.compile(r'^[\t ]*(?P[^\x00\n\r]+?) [\t ]*(?P[^\x00\n\r]+?)(?:[\t ]+(?P[^\x00\n\r]*?)[\t ]*)?$') OPENSSH_OPTIONS_REGEX = re.compile(r'(?P[-0-9A-Za-z]+)(?:="(?P(?:\\"|[^\x00\n\r"])*)")?') class SSHPublicKey(object): """ SSH public key object. """ __slots__ = ('_key', '_keytype', '_comment', '_options') def __init__(self, key, comment=None, options=None, encoding='utf-8'): if isinstance(key, SSHPublicKey): self._key = key._key self._keytype = key._keytype self._comment = key._comment self._options = key._options return if not isinstance(key, (bytes, unicode)): raise TypeError("argument must be bytes or unicode, got %s" % type(key).__name__) # All valid public key blobs start with 3 null bytes (see RFC 4253 # section 6.6, RFC 4251 section 5 and RFC 4250 section 4.6) if isinstance(key, bytes) and key[:3] != b'\0\0\0': key = key.decode(encoding) valid = self._parse_raw(key) or self._parse_base64(key) or self._parse_openssh(key) if not valid: raise ValueError("not a valid SSH public key") if comment is not None: self._comment = comment if options is not None: self._options = options def _parse_raw(self, key): if not isinstance(key, bytes): return False try: (ktlen,) = struct.unpack('>I', key[:4]) except struct.error: return False if ktlen < 1 or ktlen > len(key) - 4: return False try: keytype = key[4:ktlen+4].decode('ascii') except UnicodeDecodeError: return False self._key = key self._keytype = keytype self._options = {} self._comment = None return True def _parse_base64(self, key): if not isinstance(key, unicode): return False try: key = base64.b64decode(key) except (TypeError, ValueError): return False return self._parse_raw(key) def _parse_openssh_without_options(self, key): match = OPENSSH_BASE_REGEX.match(key) if not match: return False if not self._parse_base64(match.group('key')): return False if self._keytype != match.group('keytype'): return False self._comment = match.group('comment') return True def _parse_openssh_with_options(self, key): key = key.lstrip('\t ') options = {} while True: match = OPENSSH_OPTIONS_REGEX.match(key) if not match: return False name = match.group('name').lower() value = match.group('value') if value: value = value.replace('\\"', '"') options[name] = value key = key[len(match.group(0)):] key0, key = key[:1], key[1:] if key0 != ',': break if not self._parse_openssh_without_options(key): return False self._options = options return True def _parse_openssh(self, key): if not isinstance(key, unicode): return False if self._parse_openssh_without_options(key): return True else: return self._parse_openssh_with_