FM / rsa

/usr/lib/python2.6/site-packages/rsa

Name	Size	Mode	Actions
asn1.py	1781	0644	edit dl rm
asn1.pyc	1653	0644	edit dl rm
asn1.pyo	1653	0644	edit dl rm
bigfile.py	5185	0644	edit dl rm
bigfile.pyc	4786	0644	edit dl rm
bigfile.pyo	4786	0644	edit dl rm
cli.py	12185	0644	edit dl rm
cli.pyc	13319	0644	edit dl rm
cli.pyo	13319	0644	edit dl rm
common.py	4640	0644	edit dl rm
common.pyc	4235	0644	edit dl rm
common.pyo	4235	0644	edit dl rm
core.py	1656	0644	edit dl rm
core.pyc	1485	0644	edit dl rm
core.pyo	1485	0644	edit dl rm
key.py	22867	0644	edit dl rm
key.pyc	23986	0644	edit dl rm
key.pyo	23986	0644	edit dl rm
parallel.py	2299	0644	edit dl rm
parallel.pyc	2098	0644	edit dl rm
parallel.pyo	2098	0644	edit dl rm
pem.py	3537	0644	edit dl rm
pem.pyc	2843	0644	edit dl rm
pem.pyo	2843	0644	edit dl rm
pkcs1.py	12230	0644	edit dl rm
pkcs1.pyc	11173	0644	edit dl rm
pkcs1.pyo	11126	0644	edit dl rm
prime.py	4560	0644	edit dl rm
prime.pyc	3664	0644	edit dl rm
prime.pyo	3618	0644	edit dl rm
randnum.py	2643	0644	edit dl rm
randnum.pyc	2074	0644	edit dl rm
randnum.pyo	2074	0644	edit dl rm
transform.py	6892	0644	edit dl rm
transform.pyc	5856	0644	edit dl rm
transform.pyo	5856	0644	edit dl rm
util.py	3059	0644	edit dl rm
util.pyc	2520	0644	edit dl rm
util.pyo	2449	0644	edit dl rm
varblock.py	5406	0644	edit dl rm
varblock.pyc	4856	0644	edit dl rm
varblock.pyo	4856	0644	edit dl rm
_compat.py	3890	0644	edit dl rm
_compat.pyc	3655	0644	edit dl rm
_compat.pyo	3655	0644	edit dl rm
_version133.py	11764	0644	edit dl rm
_version133.pyc	13639	0644	edit dl rm
_version133.pyo	13639	0644	edit dl rm
_version200.py	15123	0644	edit dl rm
_version200.pyc	15264	0644	edit dl rm
_version200.pyo	15264	0644	edit dl rm
__init__.py	1476	0644	edit dl rm
__init__.pyc	1112	0644	edit dl rm
__init__.pyo	1112	0644	edit dl rm

Edit: /usr/lib/python2.6/site-packages/rsa/_compat.py (3890B)

# -*- coding: utf-8 -*-
#
#  Copyright 2011 Sybren A. Stüvel <sybren@stuvel.eu>
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      https://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

"""Python compatibility wrappers."""

from __future__ import absolute_import

import sys
from struct import pack

try:
    MAX_INT = sys.maxsize
except AttributeError:
    MAX_INT = sys.maxint

MAX_INT64 = (1 << 63) - 1
MAX_INT32 = (1 << 31) - 1
MAX_INT16 = (1 << 15) - 1

# Determine the word size of the processor.
if MAX_INT == MAX_INT64:
    # 64-bit processor.
    MACHINE_WORD_SIZE = 64
elif MAX_INT == MAX_INT32:
    # 32-bit processor.
    MACHINE_WORD_SIZE = 32
else:
    # Else we just assume 64-bit processor keeping up with modern times.
    MACHINE_WORD_SIZE = 64

try:
    # < Python3
    unicode_type = unicode
except NameError:
    # Python3.
    unicode_type = str

# Fake byte literals.
if str is unicode_type:
    def byte_literal(s):
        return s.encode('latin1')
else:
    def byte_literal(s):
        return s

# ``long`` is no more. Do type detection using this instead.
try:
    integer_types = (int, long)
except NameError:
    integer_types = (int,)

b = byte_literal

# To avoid calling b() multiple times in tight loops.
ZERO_BYTE = b('\x00')
EMPTY_BYTE = b('')

def is_bytes(obj):
    """
    Determines whether the given value is a byte string.

:param obj:
        The value to test.
    :returns:
        ``True`` if ``value`` is a byte string; ``False`` otherwise.
    """
    return isinstance(obj, bytes)

def is_integer(obj):
    """
    Determines whether the given value is an integer.

:param obj:
        The value to test.
    :returns:
        ``True`` if ``value`` is an integer; ``False`` otherwise.
    """
    return isinstance(obj, integer_types)

def byte(num):
    """
    Converts a number between 0 and 255 (both inclusive) to a base-256 (byte)
    representation.

Use it as a replacement for ``chr`` where you are expecting a byte
    because this will work on all current versions of Python::

:param num:
        An unsigned integer between 0 and 255 (both inclusive).
    :returns:
        A single byte.
    """
    return pack("B", num)

def get_word_alignment(num, force_arch=64,
                       _machine_word_size=MACHINE_WORD_SIZE):
    """
    Returns alignment details for the given number based on the platform
    Python is running on.

:param num:
        Unsigned integral number.
    :param force_arch:
        If you don't want to use 64-bit unsigned chunks, set this to
        anything other than 64. 32-bit chunks will be preferred then.
        Default 64 will be used when on a 64-bit machine.
    :param _machine_word_size:
        (Internal) The machine word size used for alignment.
    :returns:
        4-tuple::

(word_bits, word_bytes,
             max_uint, packing_format_type)
    """
    max_uint64 = 0xffffffffffffffff
    max_uint32 = 0xffffffff
    max_uint16 = 0xffff
    max_uint8 = 0xff

if force_arch == 64 and _machine_word_size >= 64 and num > max_uint32:
        # 64-bit unsigned integer.
        return 64, 8, max_uint64, "Q"
    elif num > max_uint16:
        # 32-bit unsigned integer
        return 32, 4, max_uint32, "L"
    elif num > max_uint8:
        # 16-bit unsigned integer.
        return 16, 2, max_uint16, "H"
    else:
        # 8-bit unsigned integer.
        return 8, 1, max_uint8, "B"

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