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Asked: 2026-06-14T22:05:33+00:00

The new MachineKey.Encode/MachineKey.Decode features in .Net seem to make encryption much easier. My question

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The new MachineKey.Encode/MachineKey.Decode features in .Net seem to make encryption much easier.

My question is, in the event that you need to modify your MachineKey on a routine basis, does it need to be a 3 step process?

  1. Decrypt and store existing data
  2. Modify the MachineKey
  3. Re-encrypt and store the encrypted data

Or is there a way to call MachineKey.Encrypt/.Decrypt using two different keys?

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1 Answer

  1. Editorial Team

    How long are you trying to store data for? These methods are typically used to protect round-trip data or values in cookies, not for long term data storage.

    If you’re using ASP.NET 4.5, MachineKey.Encode() and MachineKey.Decode() have been deprecated in favor of DataProtector

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