Generating a seed: a general approach

IOTA101_67D98D069B61.cs

// The snippet is a part of the IOTA Developer Essentials project. You can reach it at https://hribek25.github.io/IOTA101/
// Complete description and story behind the snippet is available at: https://hribek25.github.io/IOTA101/Allchapters_csharp.ipynb.html#67D98D069B61

//based on https://github.com/siqniz/IOTA-Random-Seed-Generator
using System.Security.Cryptography;

private static string NewRandomSeed()
{
    string iotaseed = string.Empty;
    using (RNGCryptoServiceProvider _ran = new RNGCryptoServiceProvider()) // The class provides crypto-safe random generator
    {
        string[] _seed = new string[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "9" };                

        byte[] _data = new byte[8];  //8 bytes to hold an unsigned bits int
        for (int i = 0; i <= 80; i++)   //The number times this will run in orde to fill the 81 char requirment
        {
            _ran.GetBytes(_data);
            var gennum = BitConverter.ToUInt64(_data, 0);
            var _num = (gennum % 27);
            iotaseed += _seed[_num];
        }
    }

    return iotaseed;
}

Console.WriteLine(NewRandomSeed());