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DataProtector.ProviderProtect(Byte[]) 方法

定義

指定衍生類別中的委派方法,基底類別中的 Protect(Byte[]) 方法會呼叫回此方法中。

protected:
 abstract cli::array <System::Byte> ^ ProviderProtect(cli::array <System::Byte> ^ userData);
protected abstract byte[] ProviderProtect (byte[] userData);
abstract member ProviderProtect : byte[] -> byte[]
Protected MustOverride Function ProviderProtect (userData As Byte()) As Byte()

參數

userData
Byte[]

要加密的資料。

傳回

Byte[]

包含加密資料的位元組陣列。

範例

下列範例會示範 ProviderProtect 方法的實作。 它是類別較大程式代碼範例的 DataProtector 一部分。

// To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission
// in the constructor, but Assert the permission when ProviderProtect is called.  This is similar to FileStream
// where access is checked at time of creation, not time of use.
[SecuritySafeCritical]
[DataProtectionPermission(SecurityAction.Assert, ProtectData = true)]
protected override byte[] ProviderProtect(byte[] userData)
{

    // Delegate to ProtectedData
    ProtectedMemory.Protect(userData, Scope);
    return userData;
}
' To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission 
' in the constructor, but Assert the permission when ProviderProtect is called.  This is similar to FileStream
' where access is checked at time of creation, not time of use.
<SecuritySafeCritical(), DataProtectionPermission(SecurityAction.Assert, ProtectData:=True)> _
Protected Overrides Function ProviderProtect(ByVal userData() As Byte) As Byte()

    ' Delegate to ProtectedData
    ProtectedMemory.Protect(userData, Scope)
    Return userData

End Function 'ProviderProtect

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