[Pycrypto-checkins] [ pycrypto-Bugs-1118390 ] RSA encrypt segfaults when used in threads

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Bugs item #1118390, was opened at 2005-02-08 00:30
Message generated for change (Comment added) made by akuchling
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Chris Ochs (snacktime)
Assigned to: Nobody/Anonymous (nobody)
Summary: RSA encrypt segfaults when used in threads

Initial Comment:

When running encrypt from the following class under 
threads it causes a segfault.  I narrowed it down to the 
encrypt method as the culprit.  I'm not sure if this is 
actually a pycrypto error or a python error as I'm not 
familiar enough with threading.  You can see my post 
about this on the twisted-python list which has the rest 
of the information about the environment at:

http://twistedmatrix.com/pipermail/twisted-python/2005-
February/009474.html

Chris
ch...@pa...


----------------------------------------------------
import pickle
import base64
from Crypto.Util.randpool import RandomPool
from Crypto.PublicKey import RSA

class OTCrypto:
  def __init__(self,req):
    self.req = req
    self.public_key = req.ot['publicKey']
    self.private_key = req.ot['privateKey']

  def genkey(self):
    random = RandomPool()
    random.stir()
    RSAkey = RSA.generate(2048, random.get_bytes)
    public = RSAkey.publickey()
    pickle.dump(public,open(self.public_key,'w'))
    pickle.dump(RSAkey,open(self.private_key,'w'))

  def encrypt(self,plaintext):
    public = pickle.load(open(self.public_key))
    random = RandomPool()
    random.stir()
    bits = random.get_bytes(160)
    ciphertext = public.encrypt(plaintext,bits)
    ciphertext = base64.b64encode(ciphertext[0])
    return ciphertext


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>Comment By: A.M. Kuchling (akuchling)
Date: 2005-06-10 15:32

Message:
Logged In: YES 
user_id=11375

Also reported as Python bug 1080660 (now closed).

The only extension RSA might use is _fastmath, but _fastmath
doesn't do anything for the sake of threads; it never
releases the GIL.


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