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DataProtector.ProviderProtect Method

.NET Framework 4.6 and 4.5

Specifies the delegate method in the derived class that the Protect method in the base class calls back into.

Namespace:  System.Security.Cryptography
Assembly:  System.Security (in System.Security.dll)

'Declaration
Protected MustOverride Function ProviderProtect ( _
	userData As Byte() _
) As Byte()

Parameters

userData
Type: System.Byte()

The data to be encrypted.

Return Value

Type: System.Byte()
A byte array that contains the encrypted data.

The following example shows an implementation of the ProviderProtect method. It is part of a larger code example for the DataProtector class.

    ' 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

.NET Framework

Supported in: 4.6, 4.5
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