Classe MasterKey

  • Artigo

The MasterKey object represents a SQL Server database master key.

Hierarquia de herança

System.Object
  Microsoft.SqlServer.Management.Smo.SmoObjectBase
    Microsoft.SqlServer.Management.Smo.SqlSmoObject
      Microsoft.SqlServer.Management.Smo.MasterKey

Namespace:  Microsoft.SqlServer.Management.Smo
Assembly:  Microsoft.SqlServer.Smo (em Microsoft.SqlServer.Smo.dll)

Sintaxe

'Declaração
Public NotInheritable Class MasterKey _
    Inherits SqlSmoObject _
    Implements ISfcSupportsDesignMode, IDroppable
'Uso
Dim instance As MasterKey

public sealed class MasterKey : SqlSmoObject, 
    ISfcSupportsDesignMode, IDroppable

public ref class MasterKey sealed : public SqlSmoObject, 
    ISfcSupportsDesignMode, IDroppable

[<SealedAttribute>]
type MasterKey =  
    class 
        inherit SqlSmoObject 
        interface ISfcSupportsDesignMode 
        interface IDroppable 
    end

public final class MasterKey extends SqlSmoObject implements ISfcSupportsDesignMode, IDroppable

O tipo MasterKey expõe os membros a seguir.

Construtores

  Nome Descrição
Método público MasterKey() Initializes a new instance of the MasterKey class.
Método público MasterKey(Database) Initializes a new instance of the MasterKey class on the specified database.

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Propriedades

  Nome Descrição
Propriedade pública CreateDate Gets the date and time when the master key was created.
Propriedade pública DateLastModified Gets the date and time when the master key was last modified.
Propriedade pública IsEncryptedByServer Gets the Boolean property value that specifies whether the database master key is encrypted by using the service master key or by using a password.
Propriedade pública IsOpen Gets the Boolean property value that specifies whether the database master key is open.
Propriedade pública Parent Gets the Database object that is the parent of the MasterKey object.
Propriedade pública Properties Gets a collection of Property objects that represent the object properties. (Herdado de SqlSmoObject.)
Propriedade pública State Gets the state of the referenced object. (Herdado de SmoObjectBase.)
Propriedade pública Urn Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (Herdado de SqlSmoObject.)
Propriedade pública UserData Gets or sets user-defined data associated with the referenced object. (Herdado de SmoObjectBase.)

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Métodos

  Nome Descrição
Método público AddPasswordEncryption Adds password encryption to the master key.
Método público AddServiceKeyEncryption Adds service key encryption to the master key.
Método público Close Closes the master key.
Método público Create(String) Creates a master key that has the specified password.
Método público Create(String, String, String) Creates a master key from the specified file and that has the specified encryption and decryption passwords.
Método público Discover Discovers a list of type Object. (Herdado de SqlSmoObject.)
Método público Drop Removes the master key from the database.
Método público DropPasswordEncryption Removes the password encryption from the master key by using the associated password.
Método público DropServiceKeyEncryption Drops service key encryption from the master key.
Método público EnumKeyEncryptions Enumerates a list of the current set of key encryptions for the database master key.
Método público Equals (Herdado de Object.)
Método público Export Saves the database master key to the specified system path location by using the specified password.
Método protegido FormatSqlVariant Formats an object as SqlVariant type. (Herdado de SqlSmoObject.)
Método protegido GetContextDB Gets the context database that is associated with this object. (Herdado de SqlSmoObject.)
Método protegido GetDBName Gets the database name that is associated with the object. (Herdado de SqlSmoObject.)
Método público GetHashCode (Herdado de Object.)
Método protegido GetPropValue Gets a property value of the SqlSmoObject object. (Herdado de SqlSmoObject.)
Método protegido GetPropValueOptional Gets a property value of the SqlSmoObject object. (Herdado de SqlSmoObject.)
Método protegido GetPropValueOptionalAllowNull Gets a property value of the SqlSmoObject object. (Herdado de SqlSmoObject.)
Método protegido GetServerObject Gets the server of the SqlSmoObject object. (Herdado de SqlSmoObject.)
Método público GetType (Herdado de Object.)
Método público Import(String, String, String) Loads the database master key from the file that is located at the specified system path by using the specified passwords to decrypt and encrypt the master key.
Método público Import(String, String, String, Boolean) Loads the database master key from the file that is located at the specified system path by using the specified passwords to decrypt and encrypt the master key, and with the option to force regeneration.
Método público Initialize() Initializes the object and forces the properties be loaded. (Herdado de SqlSmoObject.)
Método público Initialize(Boolean) Initializes the object and forces the properties be loaded. (Herdado de SqlSmoObject.)
Método protegido IsObjectInitialized Verifies whether the object has been initialized. (Herdado de SqlSmoObject.)
Método protegido IsObjectInSpace Verifies whether the object is isolated or connected to the instance of SQL Server. (Herdado de SqlSmoObject.)
Método público Open Opens the database master key by using the specified password.
Método público Refresh Refreshes the object and retrieves properties when the object is next accessed. (Herdado de SqlSmoObject.)
Método público Regenerate(String) Regenerates the database master key by using the specified new password.
Método público Regenerate(String, Boolean) Regenerates the database master key by using the specified new password, and with the option to force the regeneration, thus removing all items that cannot be successfully decrypted.
Método protegido SetParentImpl Sets the parent of the SqlSmoObject to the newParent parameter. (Herdado de SqlSmoObject.)
Método público ToString Returns a String that represents the referenced object. (Herdado de SqlSmoObject.)
Método público Validate Validates the state of an object. (Herdado de SmoObjectBase.)

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Eventos

  Nome Descrição
Evento público PropertyChanged Represents the event that occurs when a property is changed. (Herdado de SqlSmoObject.)
Evento público PropertyMetadataChanged Represents the event that occurs when property metadata changes. (Herdado de SqlSmoObject.)

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Implementações de interfaces explícitas

  Nome Descrição
Implementações de interfaces explícitasMétodo privado IAlienObject.Discover Discovers any dependencies. Não referencie esse membro diretamente no código. Ele dá suporte à infraestrutura do SQL Server. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.GetDomainRoot Returns the root of the domain. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.GetParent Gets the parent of this object. Não referencie esse membro diretamente no código. Ele dá suporte à infraestrutura do SQL Server. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.GetPropertyType Gets the type of the specified property. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.GetPropertyValue Gets the value of the specified property. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.GetUrn Gets the Unified Resource Name (URN) of the object. Não referencie esse membro diretamente no código. Ele dá suporte à infraestrutura do SQL Server. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.Resolve Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.SetObjectState Sets the object state to the specified SfcObjectState value. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado IAlienObject.SetPropertyValue Sets the property value. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasMétodo privado ISfcPropertyProvider.GetPropertySet Gets the interface reference to the set of properties of this object. (Herdado de SqlSmoObject.)
Implementações de interfaces explícitasPropriedade privada ISfcSupportsDesignMode.IsDesignMode Gets a Boolean value that indicates whether the object supports design mode. Identificado apenas para fins informativos. Sem suporte. A compatibilidade futura não está garantida.

Início

Comentários

A database master key is used to symmetrically encrypt keys and certificates that are stored in the database. A database master key can be encrypted by using the service master key or by using a user-specified password. When a database master key is created, a password must be supplied to encrypt and decrypt it.

When a database is attached to an instance of SQL Server, the database administrator must either supply the master key password or make an unencrypted copy of the master key that is available for encryption with the service master key.

The service master key is the top layer in the encryption hierarchy that is used to encrypt lower layers in the encryption hierarchy. The service master key is generated automatically by Windows. It can be opened only by the Windows service account under which it was created, or by a user who knows both the service account name and its password.

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

To set MasterKey object properties, users must have CONTROL permission on the database or be a member of the db_owner fixed database role.

To create or drop a master key, users must have CONTROL permission on the database or be a member of the db_owner fixed database role.

To open or regenerate a master key, users must have CONTROL permission on the database or be a member of the db_owner fixed database role.

To add or drop service key encryption, users must have CONTROL permission on the database or be a member of the db_owner fixed database role.

To drop a master key, users can be a member of the public fixed server role.

Segurança de thread

Qualquer membro público static (Shared no Visual Basic) desse tipo é seguro para threads. Não há garantia de que qualquer membro de instância seja seguro para threads.

Consulte também

Referência

Namespace Microsoft.SqlServer.Management.Smo

Outros recursos

Hierarquia de criptografia

CREATE MASTER KEY (Transact-SQL)