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.NET Framework Class Library
System.Security.AccessControl Namespace

Updated: November 2007

The System.Security.AccessControl namespace provides programming elements that control access to and audit security-related actions on securable objects.

  ClassDescription
AccessRule Represents a combination of a user's identity, an access mask, and an access control type (allow or deny). An AccessRule object also contains information about the how the rule is inherited by child objects and how that inheritance is propagated.
AceEnumerator Provides the ability to iterate through the access control entries (ACEs) in an access control list (ACL).
AuditRule Represents a combination of a user's identity and an access mask. An AuditRule object also contains information about how the rule is inherited by child objects, how that inheritance is propagated, and for what conditions it is audited.
AuthorizationRule Determines access to securable objects. The derived classes AccessRule and AuditRule offer specializations for access and audit functionality.
AuthorizationRuleCollection Represents a collection of AuthorizationRule objects.
CommonAce Represents an access control entry (ACE).
CommonAcl Represents an access control list (ACL) and is the base class for the DiscretionaryAcl and SystemAcl classes.
CommonObjectSecurity Controls access to objects without direct manipulation of access control lists (ACLs). This class is the abstract base class for the NativeObjectSecurity class.
CommonSecurityDescriptor Represents a security descriptor. A security descriptor includes an owner, a primary group, a Discretionary Access Control List (DACL), and a System Access Control List (SACL).
CompoundAce Represents a compound Access Control Entry (ACE).
CryptoKeyAccessRule Represents an access rule for a cryptographic key. An access rule represents a combination of a user's identity, an access mask, and an access control type (allow or deny). An access rule object also contains information about the how the rule is inherited by child objects and how that inheritance is propagated.
CryptoKeyAuditRule Represents an audit rule for a cryptographic key. An audit rule represents a combination of a user's identity and an access mask. An audit rule also contains information about the how the rule is inherited by child objects, how that inheritance is propagated, and for what conditions it is audited.
CryptoKeySecurity Provides the ability to control access to a cryptographic key object without direct manipulation of an Access Control List (ACL).
CustomAce Represents an Access Control Entry (ACE) that is not defined by one of the members of the AceType enumeration.
DirectoryObjectSecurity Provides the ability to control access to directory objects without direct manipulation of Access Control Lists (ACLs).
DirectorySecurity Represents the access control and audit security for a directory. This class cannot be inherited.
DiscretionaryAcl Represents a Discretionary Access Control List (DACL).
EventWaitHandleAccessRule Represents a set of access rights allowed or denied for a user or group. This class cannot be inherited.
EventWaitHandleAuditRule Represents a set of access rights to be audited for a user or group. This class cannot be inherited.
EventWaitHandleSecurity Represents the Windows access control security applied to a named system wait handle. This class cannot be inherited.
FileSecurity Represents the access control and audit security for a file. This class cannot be inherited.
FileSystemAccessRule Represents an abstraction of an access control entry (ACE) that defines an access rule for a file or directory. This class cannot be inherited.
FileSystemAuditRule Represents an abstraction of an access control entry (ACE) that defines an audit rule for a file or directory. This class cannot be inherited.
FileSystemSecurity Represents the access control and audit security for a file or directory.
GenericAce Represents an Access Control Entry (ACE), and is the base class for all other ACE classes.
GenericAcl Represents an access control list (ACL) and is the base class for the CommonAcl, DiscretionaryAcl, RawAcl, and SystemAcl classes.
GenericSecurityDescriptor Represents a security descriptor. A security descriptor includes an owner, a primary group, a Discretionary Access Control List (DACL), and a System Access Control List (SACL).
KnownAce Encapsulates all Access Control Entry (ACE) types currently defined by Microsoft Corporation. All KnownAce objects contain a 32-bit access mask and a SecurityIdentifier object.
MutexAccessRule Represents a set of access rights allowed or denied for a user or group. This class cannot be inherited.
MutexAuditRule Represents a set of access rights to be audited for a user or group. This class cannot be inherited.
MutexSecurity Represents the Windows access control security for a named mutex. This class cannot be inherited.
NativeObjectSecurity Provides the ability to control access to native objects without direct manipulation of Access Control Lists (ACLs). Native object types are defined by the ResourceType enumeration.
ObjectAccessRule Represents a combination of a user's identity, an access mask, and an access control type (allow or deny). An ObjectAccessRule object also contains information about the type of object to which the rule applies, the type of child object that can inherit the rule, how the rule is inherited by child objects, and how that inheritance is propagated.
ObjectAce Controls access to Directory Services objects. This class represents an Access Control Entry (ACE) associated with a directory object.
ObjectAuditRule Represents a combination of a user's identity, an access mask, and audit conditions. An ObjectAuditRule object also contains information about the type of object to which the rule applies, the type of child object that can inherit the rule, how the rule is inherited by child objects, and how that inheritance is propagated.
ObjectSecurity Provides the ability to control access to objects without direct manipulation of Access Control Lists (ACLs). This class is the abstract base class for the CommonObjectSecurity and DirectoryObjectSecurity classes.
PrivilegeNotHeldException The exception that is thrown when a method in the System.Security.AccessControl namespace attempts to enable a privilege that it does not have.
QualifiedAce Represents an Access Control Entry (ACE) that contains a qualifier. The qualifier, represented by an AceQualifier object, specifies whether the ACE allows access, denies access, causes system audits, or causes system alarms. The QualifiedAce class is the abstract base class for the CommonAce and ObjectAce classes.
RawAcl Represents an Access Control List (ACL).
RawSecurityDescriptor Represents a security descriptor. A security descriptor includes an owner, a primary group, a Discretionary Access Control List (DACL), and a System Access Control List (SACL).
RegistryAccessRule Represents a set of access rights allowed or denied for a user or group. This class cannot be inherited.
RegistryAuditRule Represents a set of access rights to be audited for a user or group. This class cannot be inherited.
RegistrySecurity Represents the Windows access control security for a registry key. This class cannot be inherited.
SemaphoreAccessRule Represents a set of access rights allowed or denied for a user or group. This class cannot be inherited.
SemaphoreAuditRule Represents a set of access rights to be audited for a user or group. This class cannot be inherited.
SemaphoreSecurity Represents the Windows access control security for a named semaphore. This class cannot be inherited.
SystemAcl Represents a System Access Control List (SACL).
  DelegateDescription
NativeObjectSecurity..::.ExceptionFromErrorCode Provides a way for integrators to map numeric error codes to specific exceptions that they create.
  EnumerationDescription
AccessControlActions Specifies the actions that are permitted for securable objects.
AccessControlModification Specifies the type of access control modification to perform. This enumeration is used by methods of the ObjectSecurity class and its descendents.
AccessControlSections Specifies which sections of a security descriptor to save or load.
AccessControlType Specifies whether an AccessRule object is used to allow or deny access. These values are not flags, and they cannot be combined.
AceFlags Specifies the inheritance and auditing behavior of an access control entry (ACE).
AceQualifier Specifies the function of an access control entry (ACE).
AceType Defines the available access control entry (ACE) types.
AuditFlags Specifies the conditions for auditing attempts to access a securable object.
CompoundAceType Specifies the type of a CompoundAce object.
ControlFlags These flags affect the security descriptor behavior.
CryptoKeyRights Specifies the cryptographic key operation for which an authorization rule controls access or auditing.
EventWaitHandleRights Specifies the access control rights that can be applied to named system event objects.
FileSystemRights Defines the access rights to use when creating access and audit rules.
InheritanceFlags Inheritance flags specify the semantics of inheritance for access control entries (ACEs).
MutexRights Specifies the access control rights that can be applied to named system mutex objects.
ObjectAceFlags Specifies the presence of object types for Access Control Entries (ACEs).
PropagationFlags Specifies how Access Control Entries (ACEs) are propagated to child objects. These flags are significant only if inheritance flags are present.
RegistryRights Specifies the access control rights that can be applied to registry objects.
ResourceType Specifies the defined native object types.
SecurityInfos Specifies the section of a security descriptor to be queried or set.
SemaphoreRights Specifies the access control rights that can be applied to named system semaphore objects.
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