Created on 2010-07-05 17:42 by aymill, last changed 2010-07-09 00:32 by pitrou.
| Files | ||||
|---|---|---|---|---|
| File name | Uploaded | Description | Edit | |
| example.zip | aymill, 2010-07-05 17:42 | Example zip encrypted with WinZip 11.1 using AES 256. Password is "cat". | ||
| Messages (3) | |||
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| msg109342 - (view) | Author: Andrew Miller (aymill) | Date: 2010-07-05 17:42 | |
On a WinZip AES-256 encrypted zip, zipfile.extractall raises a RuntimeError for "Bad password for file" when given the correct password. Command line example below:
Python 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from zipfile import ZipFile
>>> zip = ZipFile("example.zip", "r")
>>> zip.extractall(".", pwd="cat")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/zipfile.py", line 935, in extractall
self.extract(zipinfo, path, pwd)
File "/usr/lib/python2.6/zipfile.py", line 923, in extract
return self._extract_member(member, path, pwd)
File "/usr/lib/python2.6/zipfile.py", line 963, in _extract_member
source = self.open(member, pwd=pwd)
File "/usr/lib/python2.6/zipfile.py", line 898, in open
raise RuntimeError("Bad password for file", name)
RuntimeError: ('Bad password for file', <zipfile.ZipInfo object at 0xb739e26c>)
>>>
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| msg109385 - (view) | Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) *  |
Date: 2010-07-06 11:32 | |
zipfile only supports the "Traditional PKWARE Encryption" method. Support for other encryption methods would be useful. |
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| msg109650 - (view) | Author: Antoine Pitrou (pitrou) * |
Date: 2010-07-09 00:31 | |
Do note that providing a patch first requires that encryption/decryption facilities be made available in the stdlib. (right now we only offer hashing, and "high-level" socket wrapping) |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2010-07-09 00:32:20 | pitrou | set | dependencies: + add crypto routines to stdlib |
| 2010-07-09 00:31:40 | pitrou | set | nosy:
+ pitrou messages: + msg109650 |
| 2010-07-09 00:30:16 | pitrou | set | versions: + Python 3.2, - Python 2.6 |
| 2010-07-06 11:32:02 | amaury.forgeotdarc | set | nosy:
+ amaury.forgeotdarc title: zipfile.extractall raises runtime error on correct password -> zipfile cannot read AES encrypted files messages: + msg109385 type: behavior -> enhancement stage: needs patch |
| 2010-07-05 17:42:22 | aymill | create | |