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03 June, 2024

Generating AES IV from Rfc2898DeriveBytes

 Programing Coderfunda     June 03, 2024     No comments   

I am using Rfc2898DeriveBytes to generate an AES key and iv. However, I heard that the iv should not be dependent on the password. Here's how I'm doing it right now:
byte[] salt = GenerateRandomBytes(32); // Generates 32 random bytes
using (Rfc2898DeriveBytes rfc = new Rfc2898DeriveBytes(plainStrPassword, salt)) {
byte[] aesKey = rfc.GetBytes(32);
byte[] iv = rfc.GetBytes(16); // Should I do this or generate it randomly?
}



My question: Is it OK (secure) to generate the iv from Rfc2898DeriveBytes? Or should I generate it randomly using RNGCryptoServiceProvider?
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