SymmetricKey 类

The SymmetricKey object represents a SQL Server symmetric key.

继承层次结构

System.Object
  Microsoft.SqlServer.Management.Smo.SmoObjectBase
    Microsoft.SqlServer.Management.Smo.SqlSmoObject
      Microsoft.SqlServer.Management.Smo.NamedSmoObject
        Microsoft.SqlServer.Management.Smo.SymmetricKey

命名空间：  Microsoft.SqlServer.Management.Smo
程序集：  Microsoft.SqlServer.Smo（在 Microsoft.SqlServer.Smo.dll 中）

语法

声明
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
<PhysicalFacetAttribute> _
Public NotInheritable Class SymmetricKey _
    Inherits NamedSmoObject _
    Implements IAlterable, IDroppable, IObjectPermission
用法
Dim instance As SymmetricKey

[EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)]
[PhysicalFacetAttribute]
public sealed class SymmetricKey : NamedSmoObject, 
    IAlterable, IDroppable, IObjectPermission

[EvaluationModeAttribute(AutomatedPolicyEvaluationMode::CheckOnSchedule)]
[PhysicalFacetAttribute]
public ref class SymmetricKey sealed : public NamedSmoObject, 
    IAlterable, IDroppable, IObjectPermission

[<SealedAttribute>]
[<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)>]
[<PhysicalFacetAttribute>]
type SymmetricKey =  
    class 
        inherit NamedSmoObject 
        interface IAlterable 
        interface IDroppable 
        interface IObjectPermission 
    end

public final class SymmetricKey extends NamedSmoObject implements IAlterable, IDroppable, IObjectPermission

SymmetricKey 类型公开以下成员。

构造函数

	名称	说明
	SymmetricKey()	Initializes a new instance of the SymmetricKey class.
	SymmetricKey(Database, String)	Initializes a new instance of the SymmetricKey class on the specified database and with the specified name.

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属性

	名称	说明
	CreateDate	Gets the date and time when the symmetric key was created.
	DateLastModified	Gets the date and time when the symmetric key was last modified.
	EncryptionAlgorithm	Gets or sets the symmetric key encryption algorithm.
	ID	Gets the ID value that uniquely identifies the symmetric key.
	IsOpen	Gets the Boolean property value that specifies whether the symmetric key is open.
	KeyGuid	Get the GUID value that uniquely identifies the symmetric key globally.
	KeyLength	Gets the length of the symmetric key in bits.
	Name	Gets or sets the name of the object. （从 NamedSmoObject 继承。）
	Owner	Gets or sets the owner of the symmetric key.
	Parent	Gets or sets the Database object that is the parent of the SymmetricKey object.
	Properties	Gets a collection of Property objects that represent the object properties. （从 SqlSmoObject 继承。）
	ProviderName	Gets or sets the key provider's name.
	State	Gets the state of the referenced object. （从 SmoObjectBase 继承。）
	Urn	Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. （从 SqlSmoObject 继承。）
	UserData	Gets or sets user-defined data associated with the referenced object. （从 SmoObjectBase 继承。）

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方法

	名称	说明
	AddKeyEncryption(SymmetricKeyEncryption)	Adds key encryption to the symmetric key.
	AddKeyEncryption(array<SymmetricKeyEncryption[])	Adds key encryption to the symmetric key.
	Alter	Updates any SymmetricKey object property changes on the instance of Microsoft SQL Server.
	Close	Closes the symmetric key.
	Create(SymmetricKeyEncryption, SymmetricKeyEncryptionAlgorithm)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(array<SymmetricKeyEncryption[], SymmetricKeyEncryptionAlgorithm)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(SymmetricKeyEncryption, SymmetricKeyEncryptionAlgorithm, SecureString)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(SymmetricKeyEncryption, SymmetricKeyEncryptionAlgorithm, String)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(array<SymmetricKeyEncryption[], SymmetricKeyEncryptionAlgorithm, SecureString)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(array<SymmetricKeyEncryption[], SymmetricKeyEncryptionAlgorithm, String)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(SymmetricKeyEncryption, SymmetricKeyEncryptionAlgorithm, SecureString, String)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(SymmetricKeyEncryption, SymmetricKeyEncryptionAlgorithm, String, String)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(SymmetricKeyEncryption, String, String, CreateDispositionType)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(array<SymmetricKeyEncryption[], SymmetricKeyEncryptionAlgorithm, SecureString, String)	Creates a symmetric key on the database with the specified encryption type and method.
	Create(array<SymmetricKeyEncryption[], SymmetricKeyEncryptionAlgorithm, String, String)	Creates a symmetric key on the database with the specified encryption type and method.
	Deny(ObjectPermissionSet, String)	Denies the specified set of permissions for the specified grantee on the symmetric key.
	Deny(ObjectPermissionSet, array<String[])	Denies the specified set of permissions for the specified grantees on the symmetric key.
	Deny(ObjectPermissionSet, String, Boolean)	Denies the specified set of permissions for the specified grantee and other users that the grantee granted the specified set of permissions on the symmetric key.
	Deny(ObjectPermissionSet, array<String[], Boolean)	Denies the specified set of permissions for the specified grantees and other users that the grantee granted the specified set of permissions on the symmetric key.
	Discover	Discovers a list of type Object. （从 SqlSmoObject 继承。）
	Drop()	Removes a symmetric key from the instance of SQL Server.
	Drop(Boolean)	Removes a symmetric key and the provider key associated with it from the instance of SQL Server.
	DropKeyEncryption(SymmetricKeyEncryption)	Removes the specified key encryption from the symmetric key.
	DropKeyEncryption(array<SymmetricKeyEncryption[])	Removes the specified key encryptions from the symmetric key.
	EnumKeyEncryptions	Enumerates a list of key encryptions associated with the symmetric key.
	EnumObjectPermissions()	Enumerates a list of object permissions for the symmetric key.
	EnumObjectPermissions(String)	Enumerates a list of object permissions for a specified grantee on the symmetric key.
	EnumObjectPermissions(ObjectPermissionSet)	Enumerates a list of object permissions for a specified permission on the symmetric key.
	EnumObjectPermissions(String, ObjectPermissionSet)	Enumerates a list of object permissions for a specified grantee and a specified permission on the symmetric key.
	Equals	（从 Object 继承。）
	FormatSqlVariant	Formats an object as SqlVariant type. （从 SqlSmoObject 继承。）
	GetContextDB	Gets the context database that is associated with this object. （从 SqlSmoObject 继承。）
	GetDBName	Gets the database name that is associated with the object. （从 SqlSmoObject 继承。）
	GetHashCode	（从 Object 继承。）
	GetPropValue	Gets a property value of the SqlSmoObject object. （从 SqlSmoObject 继承。）
	GetPropValueOptional	Gets a property value of the SqlSmoObject object. （从 SqlSmoObject 继承。）
	GetPropValueOptionalAllowNull	Gets a property value of the SqlSmoObject object. （从 SqlSmoObject 继承。）
	GetServerObject	Gets the server of the SqlSmoObject object. （从 SqlSmoObject 继承。）
	GetType	（从 Object 继承。）
	Grant(ObjectPermissionSet, String)	Grants the specified set of permissions to the specified grantee on the symmetric key.
	Grant(ObjectPermissionSet, array<String[])	Grants the specified set of permissions to the specified grantees on the symmetric key.
	Grant(ObjectPermissionSet, String, Boolean)	Grants access to the specified permission to the grantee and the ability to grant access to other users on the symmetric key.
	Grant(ObjectPermissionSet, array<String[], Boolean)	Grants access to the specified permission to the grantees and the ability to grant access to other users on the symmetric key.
	Grant(ObjectPermissionSet, String, Boolean, String)	Grants the specified set of permissions to the grantee and the ability to grant the set of permissions to other users on the symmetric key under an assumed role.
	Grant(ObjectPermissionSet, array<String[], Boolean, String)	Grants the specified set of permissions to the grantees and the ability to grant the set of permissions to other users on the symmetric key under an assumed role.
	Initialize()	Initializes the object and forces the properties be loaded. （从 SqlSmoObject 继承。）
	Initialize(Boolean)	Initializes the object and forces the properties be loaded. （从 SqlSmoObject 继承。）
	IsObjectInitialized	Verifies whether the object has been initialized. （从 SqlSmoObject 继承。）
	IsObjectInSpace	Verifies whether the object is isolated or connected to the instance of SQL Server. （从 SqlSmoObject 继承。）
	Open	Opens the symmetric key.
	OpenWithCertificate(String)	Opens the symmetric key with a certificate.
	OpenWithCertificate(String, String)	Opens the symmetric key with a certificate.
	OpenWithSymmetricKey	Opens the symmetric key with another symmetric key.
	Refresh	Refreshes the object and retrieves properties when the object is next accessed. （从 SqlSmoObject 继承。）
	Revoke(ObjectPermissionSet, String)	Revokes a previously granted set of permissions from a grantee on the symmetric key.
	Revoke(ObjectPermissionSet, array<String[])	Revokes a previously granted set of permissions from a list of grantees on the symmetric key.
	Revoke(ObjectPermissionSet, String, Boolean, Boolean)	Revokes previously granted permissions from a grantee on the symmetric key and any other users to whom the grantee has granted the specified set of permissions. The grantee is also given the ability to revoke the specified set of permissions from other users under an assumed role.
	Revoke(ObjectPermissionSet, array<String[], Boolean, Boolean)	Revokes previously granted permissions from grantees on the symmetric key and any other users to whom the grantees have granted the specified set of permissions. The grantees are also given the ability to revoke the specified set of permissions from other users under an assumed role.
	Revoke(ObjectPermissionSet, String, Boolean, Boolean, String)	Revokes previously granted permissions from a grantee on the symmetric key and any other users to whom the grantee has granted the specified set of permissions. The grantee is also given the ability to revoke the specified set of permissions from other users under an assumed role.
	Revoke(ObjectPermissionSet, array<String[], Boolean, Boolean, String)	Revokes previously granted permissions from grantees on the symmetric key and any other users to whom the grantees have granted the specified set of permissions. The grantees are also given the ability to revoke the specified set of permissions from other users under an assumed role.
	SetParentImpl	Sets the parent of the SqlSmoObject to the newParent parameter. （从 SqlSmoObject 继承。）
	ToString	Returns a String that represents the referenced object. （从 SqlSmoObject 继承。）
	Validate	Validates the state of an object. （从 SmoObjectBase 继承。）

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事件

	名称	说明
	PropertyChanged	Represents the event that occurs when a property is changed. （从 SqlSmoObject 继承。）
	PropertyMetadataChanged	Represents the event that occurs when property metadata changes. （从 SqlSmoObject 继承。）

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显式接口实现

	名称	说明
	IAlienObject.Discover	Discovers any dependencies. 不要在您的代码中直接引用此成员。它支持 SQL Server 基础结构。 （从 SqlSmoObject 继承。）
	IAlienObject.GetDomainRoot	Returns the root of the domain. （从 SqlSmoObject 继承。）
	IAlienObject.GetParent	Gets the parent of this object. 不要在您的代码中直接引用此成员。它支持 SQL Server 基础结构。 （从 SqlSmoObject 继承。）
	IAlienObject.GetPropertyType	Gets the type of the specified property. （从 SqlSmoObject 继承。）
	IAlienObject.GetPropertyValue	Gets the value of the specified property. （从 SqlSmoObject 继承。）
	IAlienObject.GetUrn	Gets the Unified Resource Name (URN) of the object. 不要在您的代码中直接引用此成员。它支持 SQL Server 基础结构。 （从 SqlSmoObject 继承。）
	IAlienObject.Resolve	Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. （从 SqlSmoObject 继承。）
	IAlienObject.SetObjectState	Sets the object state to the specified SfcObjectState value. （从 SqlSmoObject 继承。）
	IAlienObject.SetPropertyValue	Sets the property value. （从 SqlSmoObject 继承。）
	ISfcPropertyProvider.GetPropertySet	Gets the interface reference to the set of properties of this object. （从 SqlSmoObject 继承。）

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注释

To get SymmetricKey object properties, users can be a member of the public fixed server role.

To set SymmetricKey object properties, users must have ALTER permission on the symmetric key.

To create a symmetric key, users must have ALTER ANY SYMMETRIC KEY permissions on the parent database.

To drop a symmetric key, users must have CONTROL permissions on the symmetric key.

To open the symmetric key, users must know the password used to encrypt the symmetric key. CONTROL permission is also required on the certificate or other symmetric key when used to open the specified symmetric key.

To grant, deny, or revoke permissions on the symmetric key to other users, users must have CONTROL permissions on the symmetric key.

线程安全

此类型的任何公共 static（在 Visual Basic 中为 Shared） 成员都是线程安全的。不保证所有实例成员都是线程安全的。

请参阅

参考

Microsoft.SqlServer.Management.Smo 命名空间

其他资源

加密层次结构

CREATE SYMMETRIC KEY (Transact-SQL)