using System;

using System.Security.Cryptography;

​

namespace MainProject

{

    public static class ImageReference

    {

        public static void Main()

        {

            for (int i = 0; i < 100; i++)

                Console.WriteLine(Generate());

        }

​

        public static string Generate(int length = 10)

        {

            var chars = "0123456789ABCDEF".ToCharArray();

            // Check chars length is divisible to 0 to confirm fairness

            if (256 % chars.Length != 0)

                throw new Exception("Invalid chars length");

            // Generate cryptographically secure random bytes

            var randomBytes = new byte[length];

            using (var crypto = new RNGCryptoServiceProvider())

            {

                crypto.GetBytes(randomBytes);

            }

​

            // Build Result

            var result = new char[length];

            for (int i = 0; i < length; i++)

            {

                int pos = randomBytes[i] % chars.Length;

                result[i] = chars[pos];

            }

​

            return new string (result);

        }

    }

}