Csharp/CSharp Tutorial/Security/RandomNumberGenerator

Cryptographically sound random numbers

<source lang="csharp">using System; using System.Collections.Generic; using System.Globalization; using System.IO; using System.Text;

public class MainClass {

   public static void Main()
   {
       RandomNumberGenerator rng = RandomNumberGenerator.Create();
       byte[] b = new byte[1];
       rng.GetBytes(b);
       Console.WriteLine(b[0]);
   }

}</source>

191

Generate 32 bytes of random data

<source lang="csharp">using System; using System.Security.Cryptography; class MainClass {

   public static void Main() {
       byte[] number = new byte[32];
       
       RandomNumberGenerator rng = RandomNumberGenerator.Create();
       
       
       rng.GetBytes(number);
       
       // Display the random number.
       Console.WriteLine(BitConverter.ToString(number));
   }

}</source>

B9-33-DA-50-FB-D0-A7-7A-6D-7C-12-A7-47-A5-FE-45-F0-E0-DC-87-AE-27-CE-C0-76-D5-85-5C-DF-7D-4A-82