NSspi
.Net interface to the Win32 SSPI authentication API
Project has been moved to GitHub:
https://github.com/antiduh/nsspi
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Provides a safe and managed interface to the Windows SSPI authentication API, better known as the "Windows Integrated Authentication" system. This allows a custom client / server system to authenticate users using their existing logon credentials. This allows a developer to provide Single-Sign-On in their application.
The API provides raw access to authentication tokens so that authentication can be easily integrated into any networking system. ...