using System;

using System.Collections.Generic;

using System.Linq;

using System.Security.Cryptography;

​

class Program

{

    static void Main()

    {

        var t = HKDF.DeriveKey(

            hashAlgorithmName: HashAlgorithmName.SHA512, 

            ikm: Convert.FromBase64String("dGVzdGtleXRoYXRpc3RvdGFsbHlzZWNyZXR0ZXN0a2V5dGhhdGlzdG90YWxseXNlY3JldA=="),

            outputLength: 128,

            salt: Convert.FromBase64String("Y3VzdG9tLnNhbHQ="),

            info: null//Convert.FromBase64String("8PHy8/T19vf4+Q==")

        );

        Console.WriteLine(Convert.ToBase64String(t));

        // Create a sample dictionary

        var values = new Dictionary<string, string>

        {

            { "key1", "value1" },

            { "key2", "value2" },

        };

        var toJoin = values

            .OrderBy(pair => pair.Key)

            .Where(pair => !string.IsNullOrEmpty(pair.Value))

            .Select(pair => pair.Value)

            .ToList();

        var toHash = string.Join('|', toJoin);

        Console.WriteLine(toHash);

    }

}

​