DataProtector.ProviderUnprotect(Byte[]) Metod

Definition

Namnområde:
System.Security.Cryptography
Sammansättning:
System.Security.dll

Anger delegatmetoden i den härledda klassen som Unprotect(Byte[]) metoden i basklassen anropar tillbaka till.

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

Parametrar

encryptedData
Byte[]

De data som ska okrypteras.

Returer

Byte[]

Okrypterade data.

Exempel

I följande exempel visas en implementering av ProviderUnprotect metoden. Det är en del av ett större kodexempel för DataProtector klassen.

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

    ProtectedMemory.Unprotect(encryptedData,Scope);
        return encryptedData;
}

' To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission 
' in the constructor, but Assert the permission when ProviderUnprotect is called..  This is similar to FileStream
' where access is checked at time of creation, not time of use.
<SecuritySafeCritical(), DataProtectionPermission(SecurityAction.Assert, UnprotectData:=True)> _
Protected Overrides Function ProviderUnprotect(ByVal encryptedData() As Byte) As Byte()

    ProtectedMemory.Unprotect(encryptedData, Scope)
    Return encryptedData

End Function 'ProviderUnprotect

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