CredSSP (Credential Security Support Provider) protocol is a Security Support Provider
that is implemented by using the Security Support Provider Interface
) which lets an application
delegate the user's credentials
from the client
to the target server
for remote authentication
CredSSP provides an encrypted Transport Layer Security Protocol channel.
The client is authenticated over the encrypted channel by using the Simple and Protected GSSAPI Negotiation Mechanism (SPNEGO) protocol with either Microsoft Kerberos or Microsoft NTLM.
This is not constrained delegation
. CredSSP passes the user's full credentials to the server without any constraint
After the client and server are authenticated, the client passes the user's credentials to the server. The credentials are doubly encrypted under the SPNEGO and TLS session keys.
CredSSP supports Password-based logon as well as Smart Card logon based on both X.509 and PKINIT.
does not support Wow64 clients.
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