1        #region " SHA-1 Hash Generation "   ...
2
3
4        /// <summary>

5        /// calculate SHA-1 hash

6        /// </summary>

7        /// <param name="text">input string</param>

8        /// <param name="encoding">character encoding</param>

9        /// <returns>SHA-1 hash value</returns>

10        public static string CalculateSHA1Hash(string text, Encoding encoding)
11        {
12            var buffer = encoding.GetBytes(text);
13            var crypto = new SHA1CryptoServiceProvider();
14            var hash = BitConverter.ToString(crypto.ComputeHash(buffer)).Replace("-", "");
15            return hash;
16        }
17        #endregion

using System;
using System.Security.Cryptography;
using System.Text;