cryptography - How can I generate a cryptographically secure pseudorandom number in C#?

Question

Is there any fast implementation of cryptographically secure pseudorandom number generator (CSPRNG) for C# 3.0 (.NET Framework 3.5), for authentication tokens?

Answer 1

using System.Security.Cryptography;
...
using(RandomNumberGenerator rng = new RNGCryptoServiceProvider())
{
    byte[] tokenData = new byte[32];
    rng.GetBytes(tokenData);

    string token = Convert.ToBase64String(tokenData);
}