using System;

using System.Security.Cryptography;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        string chaine = "3132333400000003";

        string resultat = calculerSHA1(chaine);

        Console.WriteLine("Le résultat du SHA-1 est : " + resultat);

    }

​

    public static string calculerSHA1(string chaine)

    {

        using (SHA1 sha1 = SHA1.Create())

        {

            byte[] bytes = Encoding.UTF8.GetBytes(chaine);  // Conversion de la chaîne en UTF-8

            byte[] hashBytes = sha1.ComputeHash(bytes);

            StringBuilder stringBuilder = new StringBuilder();

​

            for (int i = 0; i < hashBytes.Length; i++)

            {

                stringBuilder.Append(hashBytes[i].ToString("x2"));

            }

​

            string retour = stringBuilder.ToString();

            return retour.Substring(0, 32); // Retourne les 32 premiers caractères

        }

    }

}

​