REDROOM

Navigation

Breadcrumbs

Create

Edit File Size: 2.35 KB

/home/godevadmin/public_html/upload_images/home/000~ROOT~000/usr/lib/python3.6/site-packages/rsa/parallel.py

Text Base64

#  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.

"""Functions for parallel computation on multiple cores.

Introduced in Python-RSA 3.1.

.. note::

Requires Python 2.6 or newer.

"""

import multiprocessing as mp
from multiprocessing.connection import Connection

import rsa.prime
import rsa.randnum

def _find_prime(nbits: int, pipe: Connection) -> None:
    while True:
        integer = rsa.randnum.read_random_odd_int(nbits)

# Test for primeness
        if rsa.prime.is_prime(integer):
            pipe.send(integer)
            return

def getprime(nbits: int, poolsize: int) -> int:
    """Returns a prime number that can be stored in 'nbits' bits.

Works in multiple threads at the same time.

>>> p = getprime(128, 3)
    >>> rsa.prime.is_prime(p-1)
    False
    >>> rsa.prime.is_prime(p)
    True
    >>> rsa.prime.is_prime(p+1)
    False

>>> from rsa import common
    >>> common.bit_size(p) == 128
    True

"""

(pipe_recv, pipe_send) = mp.Pipe(duplex=False)

# Create processes
    try:
        procs = [mp.Process(target=_find_prime, args=(nbits, pipe_send)) for _ in range(poolsize)]
        # Start processes
        for p in procs:
            p.start()

result = pipe_recv.recv()
    finally:
        pipe_recv.close()
        pipe_send.close()

# Terminate processes
    for p in procs:
        p.terminate()

return result

__all__ = ["getprime"]

if __name__ == "__main__":
    print("Running doctests 1000x or until failure")
    import doctest

for count in range(100):
        (failures, tests) = doctest.testmod()
        if failures:
            break

if count % 10 == 0 and count:
            print("%i times" % count)

print("Doctests done")

Exit & Reset Text mode: syntax highlighting auto-detects file type.

Name	Size	Perms	Modified	Actions
__pycache__ DIR	-	drwxr-xr-x	2025-09-17 12:30:06	Edit Download recursive recursive
asn1.py	1.75 KB	lrw-r--r--	2021-03-29 21:17:08	Edit Download recursive recursive
cli.py	9.94 KB	lrw-r--r--	2021-11-24 09:39:08	Edit Download recursive recursive
common.py	4.75 KB	lrw-r--r--	2021-11-24 10:00:05	Edit Download recursive recursive
core.py	1.67 KB	lrw-r--r--	2021-11-24 10:00:05	Edit Download recursive recursive
key.py	27.62 KB	lrw-r--r--	2022-04-13 08:57:32	Edit Download recursive recursive
parallel.py	2.35 KB	lrw-r--r--	2021-03-29 21:17:08	Edit Download recursive recursive
pem.py	4.03 KB	lrw-r--r--	2021-03-29 21:17:08	Edit Download recursive recursive
pkcs1.py	16.30 KB	lrw-r--r--	2022-07-20 09:28:13	Edit Download recursive recursive
pkcs1_v2.py	3.47 KB	lrw-r--r--	2021-11-24 10:00:05	Edit Download recursive recursive
prime.py	5.18 KB	lrw-r--r--	2021-11-24 10:00:05	Edit Download recursive recursive
py.typed	64 B	lrw-r--r--	2021-03-24 09:26:09	Edit Download recursive recursive
randnum.py	2.69 KB	lrw-r--r--	2021-03-29 21:15:57	Edit Download recursive recursive
transform.py	2.22 KB	lrw-r--r--	2021-11-24 10:00:05	Edit Download recursive recursive
util.py	3.02 KB	lrw-r--r--	2021-03-29 21:17:08	Edit Download recursive recursive
__init__.py	1.57 KB	lrw-r--r--	2022-07-20 10:28:59	Edit Download recursive recursive

Directory Contents