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DataProtector.ProviderProtect Method

.NET Framework 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)

protected abstract byte[] ProviderProtect(
	byte[] userData
)

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 override byte[] ProviderProtect(byte[] userData)
{

    // Delegate to ProtectedData
    ProtectedMemory.Protect(userData, Scope);
    return userData;
}

.NET Framework

Supported in: 4.6, 4.5
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