| Platform SDK: Logon Authentication |
The Security Support Provider Interface (SSPI) functions fall into the following major categories.
| Function category | Description |
|---|---|
| Package management | These functions list the security packages available and select a package. |
| Credential management | These functions create and work with handles to the credentials of principals. |
| Context management | These functions use credentials handles to create a security context. |
| Message support | These functions use security contexts to ensure message integrity and privacy during message exchanges over the secured connection. Integrity is achieved through message signing and signature verification. Privacy is achieved through message encryption and decryption. |