vbwagner/ctypescrypto

Python interface to some openssl function based on ctypes module

ctypescrypto's Issues

Github release.

Please make a github release, for packaging purposes.
Thanks.

CMS SignedData.Verify causing SEGFAULT

store = x509.X509Store(cert)
sigobj = cms.SignedData()
sigobj.verify(store=store, data=data, flags=cms.Flags.NOSMIMECAP | cms.Flags.BINARY)

crash @ libcrypto.CMS_verify(self.ptr, certstack, store.store, bio,None, flags)

ctypescrypto on PyPi

https://packaging.python.org/en/latest/tutorial.html#uploading-your-project-to-pypi

Please consider add this very useful module to Pypi for easier integration and install. Thanks!

Difficult to use for binary data in py3

I have used the library with py2 and now I am moving my projects to py3. The bindings are designed to work with text data which was not a big issue with py2 where bytes and str are analogous but this fails in py3 where str is unicode.

I have hacked the code for CMS to make it work for binary data under py3 (basically assume that bytes are passed in and returned) and this can be explicitly converted to str by the user is need be. Happy to have a closer look and provide a non-hacky patch.

Check for CMS support in libcrypto

While OpenSSL's libcrypto has supported CMS functions for awhile, LibreSSL's libcrypto has removed it. LibreSSL is the default SSL library on MacOS (10.13 anyway). MacOS 10.13 users have to install openssl1.1 with brew, which will include a libcrypto library that has the CMS_* functions.

I've added this exception to cms.py around line 308 to alert of this condition:

if not hasattr(libcrypto, "CMS_decrypt"):
    raise OSError("libcrypto lacks CMS functionality. Try using a different libcrypto library with  "
                  "[DY]LD_LIBRARY_PATH")

Any issues with this particular approach?

Can't set_default engine to GOST

when call set_default(Engine('gost'))

Traceback (most recent call last):
File ".\main.py", line 6, in
set_default(Engine('gost'))
File "C:\Projects\PROJECT\site\tmp\venv\lib\site-packages\ctypescrypto\engine.py", line 24, in init
eng = libcrypto.ENGINE_by_id("dynamic")
ctypes.ArgumentError: argument 1: <class 'TypeError'>: wrong type

OPENSSL_add_all_algorithms_conf undefined

New libcrypto breaks lib

AttributeError: /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1: undefined symbol: OPENSSL_add_all_algorithms_conf

Load windows DLL named libcrypto-1_1-x64.dll

Seems fresh packages fow windows here

https://bintray.com/vszakats/generic/openssl

Merge with jaraco.crypto

Hi Victor. Like you, I adopted the abandoned ctypescrypto as jaraco/jaraco.crypto. I haven't used the library much lately, so was thinking I would just abandon it, but I looked and found you'd revived ctypescrypto. Shame we couldn't have been working together all this time.

As you can see, the code has since diverged quite a bit, and we've solved many of the same problems. My question to you - would be interested in adopting any of the changes from jaraco.crypto, such as the exposing of evp and cross-platform library discovery?

Let me know your interest or thoughts. I'm primarily interested in setting the code free, so I'm very open to any proposal.

please add python 3 sppuort

as title.
I find it can not install in python 3, win 10 amd64

CMS Causing SEGFAULT on OS X

Running into an issue trying to parse CMS SignedData objects on OS X. It's an OS X specific issue, no problems on Ubuntu. Using the most recent version of openssl from brew, 1.0.2h_1.

from ctypescrypto.cms import CMS
bytes = open('cms', 'r').read()
CMS(bytes, format='DER')

Process:               Python [1506]
Path:                  /usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
Identifier:            Python
Version:               2.7.10 (2.7.10)
Code Type:             X86-64 (Native)
Parent Process:        bash [476]
Responsible:           iTerm2 [365]
User ID:               501

Date/Time:             2016-06-20 06:39:21.014 -0700
OS Version:            Mac OS X 10.11.5 (15F34)
Report Version:        11
Anonymous UUID:        2EB7D4BA-6F36-9A2D-5D4E-AE0A21CB6845


Time Awake Since Boot: 15000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0xffffffffc3527060

VM Regions Near 0xffffffffc3527060:
--> shared memory          00007ffffff1a000-00007ffffff1b000 [    4K] r-x/r-x SM=SHM  


Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libcrypto.dylib                 0x00000001074e75f7 CMS_get0_type + 4
1   _ctypes.so                      0x00000001073b57ef ffi_call_unix64 + 79
2   _ctypes.so                      0x00000001073b6024 ffi_call + 836
3   _ctypes.so                      0x00000001073b163f _ctypes_callproc + 591
4   _ctypes.so                      0x00000001073abc60 PyCFuncPtr_call + 1049
5   org.python.python               0x0000000106ddb635 PyObject_Call + 99
6   org.python.python               0x0000000106e5734f PyEval_EvalFrameEx + 10628
7   org.python.python               0x0000000106e547d9 PyEval_EvalCodeEx + 1583
8   org.python.python               0x0000000106e5ab26 fast_function + 117
9   org.python.python               0x0000000106e579aa PyEval_EvalFrameEx + 12255
10  org.python.python               0x0000000106e547d9 PyEval_EvalCodeEx + 1583
11  org.python.python               0x0000000106e541a4 PyEval_EvalCode + 54
12  org.python.python               0x0000000106e740da run_mod + 53
13  org.python.python               0x0000000106e73f05 PyRun_InteractiveOneFlags + 377
14  org.python.python               0x0000000106e739fe PyRun_InteractiveLoopFlags + 192
15  org.python.python               0x0000000106e738a8 PyRun_AnyFileExFlags + 60
16  org.python.python               0x0000000106e8567d Py_Main + 3137
17  libdyld.dylib                   0x00007fff8f9f85ad start + 1

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x00007fff58e32040  rcx: 0x0000000000000000  rdx: 0x0000000107565c78
  rdi: 0xffffffffc3527060  rsi: 0x0000000000000002  rbp: 0x00007fff58e31f10  rsp: 0x00007fff58e31f10
   r8: 0x00007fff58e31eb0   r9: 0x00000001073dd60f  r10: 0x00007fff58e31e70  r11: 0x00000001074e75f3
  r12: 0x00007fff58e31e70  r13: 0x0000000000000001  r14: 0x00007fff58e32020  r15: 0xca005160c8c40ea7
  rip: 0x00000001074e75f7  rfl: 0x0000000000010246  cr2: 0xffffffffc3527060

Logical CPU:     2
Error Code:      0x00000004
Trap Number:     14


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    0x7fff93dc6000 -     0x7fff93dc8fff  libsystem_coreservices.dylib (19.2) <1B3F5AFC-FFCD-3ECB-8B9A-5538366FB20D> /usr/lib/system/libsystem_coreservices.dylib
    0x7fff94298000 -     0x7fff942c1ff7  libxpc.dylib (765.50.8) <54D1328E-054E-3DAA-89E2-375722F9D18F> /usr/lib/system/libxpc.dylib
    0x7fff94456000 -     0x7fff94474ff7  libsystem_kernel.dylib (3248.50.21) <78E54D59-D2B0-3F54-9A4A-0A68D671F253> /usr/lib/system/libsystem_kernel.dylib
    0x7fff94485000 -     0x7fff94485ff7  libunc.dylib (29) <DDB1E947-C775-33B8-B461-63E5EB698F0E> /usr/lib/system/libunc.dylib
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External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 5454
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=110.4M resident=0K(0%) swapped_out_or_unallocated=110.4M(100%)
Writable regions: Total=52.2M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=52.2M(100%)

                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                  2048K        2 
Kernel Alloc Once                    4K        2 
MALLOC                            41.9M       20 
MALLOC guard page                   16K        4 
STACK GUARD                       56.0M        2 
Stack                             8192K        2 
VM_ALLOCATE                          8K        3 
__DATA                            3724K       82 
__LINKEDIT                        92.3M       34 
__TEXT                            18.1M       79 
__UNICODE                          552K        2 
shared memory                       12K        4 
===========                     =======  ======= 
TOTAL                            222.5M      224 

Model: MacBookPro12,1, BootROM MBP121.0167.B16, 2 processors, Intel Core i7, 3.1 GHz, 16 GB, SMC 2.28f7
Graphics: Intel Iris Graphics 6100, Intel Iris Graphics 6100, Built-In
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1867 MHz, 0x80CE, 0x4B3445424533303445422D45474346202020
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1867 MHz, 0x80CE, 0x4B3445424533303445422D45474346202020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x133), Broadcom BCM43xx 1.0 (7.21.95.175.1a6)
Bluetooth: Version 4.4.5f3 17904, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM0512G, 500.28 GB
USB Device: USB 3.0 Bus
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: MacBook Pro, Apple Inc., 27.1

cms.zip

CMS examples/tests

Could examples of using the CMS functions be added? I'm encountering strange crashing issues with using the existing CMS SignedData generation functions. Having tests and proper usage examples would help with this.

Example snippet that crashes on OSX 10.13:

    cert = x509.X509(my_signer_cert)
    pkeyd = pkey.PKey(privkey=my_signer_key, cansign=True)
    certs = [x509.X509(my_ca_cert)]
    sigobj = cms.SignedData.create(data=data, cert=cert,
                                       pkey=pkeyd,
                                       flags=cms.Flags.NOSMIMECAP | cms.Flags.BINARY, certs=certs)

Thanks for all your hard work on this library!

dll not found if running as administrator or service on windows

dll not found if running as administrator or service on windows

File "C:\users\eri\Application Data\Python\Python36\site-packages\ctypescrypto_init_.py", line 27, in
OSError: Cannot find OpenSSL crypto library

Works if running as user