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System.Security.Principal Namespace
.NET Framework 3.0
The System.Security.Principal namespace defines a principal object that represents the security context under which code is running. For more information, see Role-Based Security.
| Class | Description | |
|---|---|---|
 | GenericIdentity | Represents a generic user. |
| GenericPrincipal | Represents a generic principal. |
| IdentityNotMappedException | Represents an exception for a principal whose identity could not be mapped to a known identity. |
| IdentityReference | Represents an identity and is the base class for the NTAccount and SecurityIdentifier classes. This class does not provide a public constructor, and therefore cannot be inherited. |
| IdentityReferenceCollection | Represents a collection of IdentityReference objects and provides a means of converting sets of IdentityReference-derived objects to IdentityReference-derived types. |
| NTAccount | Represents a user or group account. |
| SecurityIdentifier | Represents a security identifier (SID) and provides marshaling and comparison operations for SIDs. |
| WindowsIdentity | Represents a Windows user. |
| WindowsImpersonationContext | Represents the Windows user prior to an impersonation operation. |
| WindowsPrincipal | Allows code to check the Windows group membership of a Windows user. |
| Interface | Description | |
|---|---|---|
 | IIdentity | Defines the basic functionality of an identity object. |
| IPrincipal | Defines the basic functionality of a principal object. |
| Enumeration | Description | |
|---|---|---|
 | PrincipalPolicy | Specifies how principal and identity objects should be created for an application domain. The default is UnauthenticatedPrincipal. |
| TokenAccessLevels | Defines the privileges of the user account associated with the access token. |
| TokenImpersonationLevel | Defines security impersonation levels. Security impersonation levels govern the degree to which a server process can act on behalf of a client process. |
| WellKnownSidType | Defines a set of commonly used security identifiers (SIDs). |
| WindowsAccountType | Specifies the type of Windows account used. |
| WindowsBuiltInRole | Specifies common roles to be used with IsInRole. |
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