System.Security.Principal Namespace

Represents a generic user.

Represents a generic principal.

Represents an exception for a principal whose identity could not be mapped to a known identity.

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.

Represents a collection of IdentityReference objects and provides a means of converting sets of IdentityReference-derived objects to IdentityReference-derived types.

Represents a user or group account.

Represents a security identifier (SID) and provides marshaling and comparison operations for SIDs.

Represents a Windows user.

Represents the Windows user prior to an impersonation operation.

Enables code to check the Windows group membership of a Windows user.

Defines the basic functionality of an identity object.

Defines the basic functionality of a principal object.

Specifies how principal and identity objects should be created for an application domain. The default is UnauthenticatedPrincipal.

Defines the privileges of the user account associated with the access token.

Defines security impersonation levels. Security impersonation levels govern the degree to which a server process can act on behalf of a client process.

Defines a set of commonly used security identifiers (SIDs).

Specifies the type of Windows account used.

Specifies common roles to be used with IsInRole(String).