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Asked: 2026-06-06T08:49:24+00:00

I am writing a C# app designed to encrypt text files using Rijndeal (block

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I am writing a C# app designed to encrypt text files using Rijndeal (block size 128, key size 256, in other words AES256). I use the user supplied password and a random salt to generate a key using PBKDF2. (The IV is also derived from the password and salt)

I want to store the salt as cleartext prepended to the ciphertext. In other words, line 1 would contain something like >>>SALTGOESHERE. Line 3 and onward would store the ciphertext.

How should I go about retrieving the salt for decryption?

I’m very new to C#, this is my first real app, so please bear with my ignorance. Thanks.

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1 Answer

  1. Editorial Team

    yourString.Substring(0, yourString.IndexOf(Environment.NewLine));

    change 0 to 3 if “>>>” is not just the placeholder

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