// SHA-1 Password Hashing Console Wrapper for use with https://dotnetfiddle.net/

// based on https://gist.github.com/kristopherjohnson/3021045

using System;

using System.Security.Cryptography;

using System.Text;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(Snippets.SHA1Util.SHA1HashStringForUTF8String("ChangeMe!").ToUpper());

    }

}

​

​

namespace Snippets

{

    public static class SHA1Util

    {

        /// <summary>

        /// Compute hash for string encoded as UTF8

        /// </summary>

        /// <param name="s">String to be hashed</param>

        /// <returns>40-character hex string</returns>

        public static string SHA1HashStringForUTF8String(string s)

        {

            byte[] bytes = Encoding.UTF8.GetBytes(s);

​

            using(var sha1 = SHA1.Create())

            {

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

                return HexStringFromBytes(hashBytes);

            }

        }

​

        /// <summary>

        /// Convert an array of bytes to a string of hex digits

        /// </summary>

        /// <param name="bytes">array of bytes</param>

        /// <returns>String of hex digits</returns>

        public static string HexStringFromBytes(byte[] bytes)

        {

            var sb = new StringBuilder();

            foreach (byte b in bytes)

            {

                var hex = b.ToString("x2");

                sb.Append(hex);

            }

            return sb.ToString();

        }

    }

}