DataProtector.ProviderProtect(Byte[]) 方法
定义
重要
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指定基类中该方法调用回的派生类 Protect(Byte[]) 中的委托方法。
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()参数
- userData
- Byte[]
要加密的数据。
返回
Byte[]
包含加密数据的字节数组。
示例
以下示例演示方法的 ProviderProtect 实现。 它是类的较大代码示例的 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
