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diff --git a/rsa/machine_size.py b/rsa/machine_size.py
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-# -*- 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.
-
-"""Detection of 32-bit and 64-bit machines and byte alignment."""
-
-import sys
-
-MAX_INT = sys.maxsize
-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
-
-
-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"