On Nov 22 2020, at 8:14 pm, Tim Roberts <t...@probo.com> wrote: > On Nov 22, 2020, at 4:16 AM, Antoine FERRON via python-win32 > <python-win32@python.org> wrote: > > > > Can you confirm that TPM "Microsoft Platform Crypto Provider" requires > > "CNG", and pywin32 is only "CAPI" capable ? > > This is not a Python question at all. Look at the MSDN documentation page for > the CryptEnumProviders API. You’ll see that it is deprecated, and only > accesses the base cryptographic provider and the enhanced cryptographic > provider. Remember that pywin32 is, in almost every case, a relatively thin > wrapper around the Windows APIs.
Well, not Python, but related to pywin32. So I understand that win32crypt.CryptEnumProviders in win32 is calling CryptEnumProvidersA (https://docs.microsoft.com/en-us/windows/win32/api/wincrypt/nf-wincrypt-cryptenumprovidersa) which is deprecated (what I call "CAPI"), and I need NCryptEnumStorageProviders (https://docs.microsoft.com/en-us/windows/win32/api/ncrypt/nf-ncrypt-ncryptenumstorageproviders) (what I call "CNG"). So the win32 API is not a fit for this, because it wraps "old" crypto functions. > > Anyway, do you have some ideas in mind to reach my goal ? > The APIs from ncrypt.dll are not, as of yet, exposed in pywin32. You can > certainly use ctypes to access them. Yes, I can see 2 ways to reach my goal : one is ffi.dlopen("ncrypt.dll") or CDLL and provides the good ctypes, which can be not so easy (https://stackoverflow.com/questions/59818779/is-there-a-python-module-could-sign-and-verify-data-by-rsa-key-pair-from-certifi/59854465#comment106111779_59854465). the other is to build a small c++ app and call exe fro Python with subprocess.run std in/out. Also an intermediary is do a small c++ app/dll and use ffi to access it, or extend the Python with c++. This "hcrypt" helper maybe a good help (https://github.com/vladp72/hcrypt) for the second way. > — > Tim Roberts, t...@probo.com > Providenza & Boekelheide, Inc. Thanks for your time and help, appreciate. > _______________________________________________ > python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
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