Re: SSPI and Crypto

comments inline

"Rpj" <Rpj@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:493D8F6E-BAB8-49F2-88CB-EF5701A02BD2@xxxxxxxxxxxxxxxx
Hi,

I have a few queries regarding Crypto and SSL services provided by
windows.
You can find them below. It would be really great if anyone helps me.

Question 1:
In windows, is SSPI the only way to invoke SSL? Are there any low level
SSL
calls (for example equivalent OpenSSL APIs) exposed to the user?
Nope. On Windows, SSPI is the low-level API for SSL operations. There are
other API's for SSL, but as I recall these all internally invoke the SSPI
functions.


Question 2:
Is PEM encoding supported in windows? If yes, what are the interfaces to
encode and decode certificates in the PEM format?

Question 3:

Are all the Crypto and SSL calls thread safe? If not, how to ensure thread
safeness in a multithreaded environment? Are there any locking callbacks
available in windows like OpenSSL?
The Crypto and SSL/SSPI functions are threadsafe, with a few fairly obvious
exceptions. For example, you can't encrypt using the same symmetric key at
the same time from multiple threads, since the encryption operation changes
the state of the key. Many of the Microsoft server applications such as IIS
use these function intensively, and you don't see them serializing their
crypto calls. :-)


Thanks in advance,

Regards,
Rpj


.

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