using System;

using System.Security.Cryptography;

using System.Text;

public class Program

{

     static string GenerateSha256(string inputString)

        {

​

            var hash = new System.Text.StringBuilder();

            using (SHA256 sha256 = SHA256.Create())

            {

                byte[] hashBytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(inputString));

​

                foreach (byte theByte in hashBytes)

                {

                    hash.Append(theByte.ToString("x2"));

                }

​

            }

            return hash.ToString();

        }

    public static void Main()

    {

        var json="""

{

  "correlation_identifier": "Payee Validation",

  "context": "PAYM",

  "creditor_account": "23124812341",

  "creditor_name": "NARUMATT",

  "uetr": "3c9e595f-07d8-4f56-ae80-8edbb7683d59",

  "creditor_agent": {

    "bicfi": "BSALSVSS"

  }

}

""";

        Console.WriteLine(GenerateSha256(json));

    }

}