Re: TLS with Client Authentication using private key from Windows store

2020-11-24 Thread Jan Just Keijser 

Hi Ferenc,

On 23/11/20 13:03, Ferenc Gerlits via openssl-users wrote:

Hi,

I am trying to use openssl to implement a client-side TLS connection 
with Client Authentication on Windows, using a non-exportable private 
key stored in the Windows Certificate Store.  Currently, our code can 
use a private key stored in a local file, and if the key in the 
Windows store was exportable, I could export it and use it in the 
existing code.  But the key is non-exportable, which is a problem.


Does anyone know how to do this?

So far, I have found suggestions to use the CAPI engine (eg. 
https://groups.google.com/g/mailing.openssl.users/c/_rdJLc7emAY?pli=1), 
but no examples of how to do that, and also some tickets (eg. 
https://github.com/openssl/openssl/issues/12859) which say that the 
CAPI engine does not work with TLS >= 1.2 on openssl 1.1.1, so that 
doesn't look like a good solution.



OpenVPN 2.4+  can use the Windows Certificate Store to encrypt and sign 
traffic using CNG (Crypto Next Gen, I believe). I'd suggest you download 
the source code and examine the file  cryptoapi.c for details.


HTH,

JJK

TLS with Client Authentication using private key from Windows store

2020-11-23 Thread Ferenc Gerlits via openssl-users 
 Hi,

I am trying to use openssl to implement a client-side TLS connection with
Client Authentication on Windows, using a non-exportable private key stored
in the Windows Certificate Store.  Currently, our code can use a private
key stored in a local file, and if the key in the Windows store was
exportable, I could export it and use it in the existing code.  But the key
is non-exportable, which is a problem.

Does anyone know how to do this?

So far, I have found suggestions to use the CAPI engine (eg.
https://groups.google.com/g/mailing.openssl.users/c/_rdJLc7emAY?pli=1), but
no examples of how to do that, and also some tickets (eg.
https://github.com/openssl/openssl/issues/12859) which say that the CAPI
engine does not work with TLS >= 1.2 on openssl 1.1.1, so that doesn't look
like a good solution.

Any help would be appreciated!

Thank you,
Ferenc