using System;

using System.Security.Cryptography;

using System.Text;

​

class Program

{

    static void Main()

    {

        string inputString = "ashok";

        string sha512Hash = ComputeSHA512Hash(inputString);

​

        Console.WriteLine($"Input: {inputString}");

        Console.WriteLine($"SHA-512 Hash: {sha512Hash}");

    }

​

    static string ComputeSHA512Hash(string input)

    {

        using (SHA512 sha512 = SHA512.Create())

        {

            // Convert the input string to bytes

            byte[] inputBytes = Encoding.UTF8.GetBytes(input);

​

            // Compute the hash

            byte[] hashBytes = sha512.ComputeHash(inputBytes);

​

            // Convert the hash to a hexadecimal string

            StringBuilder stringBuilder = new StringBuilder();

            foreach (byte b in hashBytes)

            {

                stringBuilder.Append(b.ToString("x2"));

            }

​

            return stringBuilder.ToString();

        }

    }

}

​