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

namespace StringHash
{
    class StringHash
    {
        static int Main(string[] args)
        {
            try
            {
                string hash = "MD5";
                string str = "onitroad";
                string result;
                
                HashAlgorithm ha;
                switch (hash)
                {
                    case "MD5":
                        // 在c#中计算字符串的md5值
                        ha = new MD5CryptoServiceProvider();
                        break;
                    case "SHA1":
                    case "SHA-1":
                        // 在c#中计算字符串的sha值
                        ha = new SHA1CryptoServiceProvider();
                        break;
                    case "SHA256":
                    case "SHA-256":
                        // 在c#中计算字符串的sha256值
                        ha = new SHA256CryptoServiceProvider();
                        break;
                    case "SHA384":
                    case "SHA-384":
                        ha = new SHA384CryptoServiceProvider();
                        break;
                    case "SHA512":
                    case "SHA-512":
                        ha = new SHA512CryptoServiceProvider();
                        break;
                    default:
                        return 1;
                }
                result = BitConverter.ToString(ha.ComputeHash(StrToByteArray(str)));
                ha.Clear();

                StringBuilder sb = new StringBuilder(result.ToLowerInvariant());
                Console.OpenStandardOutput();
                Console.WriteLine(sb.Replace("-", ""));

                return 0;
            }
            catch (Exception e)
            {
                
            }
            return 0;
        }


        // C# 將字符串转换为字节数组

        public static byte[] StrToByteArray(string instring)
        {
            System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
            return encoding.GetBytes(instring);
        }

        
    }
}