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Asked: 2026-05-27T18:11:03+00:00

I am trying to encrypt/decrypt a string using c#. I’ve found countless tutorials on

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I am trying to encrypt/decrypt a string using c#. I’ve found countless tutorials on how to this ex: this However most of them assume you already have the key. So my question is:

How do I generate the key ?

Thanks in advance.

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1 Answer

  1. Editorial Team

    If you’re using the encryption classes in the System.Security.Cryptography namespace, use the Rfc2898DeriveBytes class (@CodeInChaos points out that it supersedes PasswordDeriveBytes) to derive a key from a password.

    If a random key is OK, the SymmetricAlgorithm class has a GenerateKey method.

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