C# 哈希加密

using System;
using System.Text;
using System.Security.Cryptography;
namespace DotNet.Utilities
{
 /// <summary>
 /// 得到随机安全码（哈希加密）。
 /// </summary>
 public class HashEncode
 {
  public HashEncode()
  {
   //
   // TODO: 在此处添加构造函数逻辑
   //
  }
  /// <summary>
  /// 得到随机哈希加密字符串
  /// </summary>
  /// <returns></returns>
  public static string GetSecurity()
  {   
   string Security = HashEncoding(GetRandomValue());  
   return Security;
  }
  /// <summary>
  /// 得到一个随机数值
  /// </summary>
  /// <returns></returns>
  public static string GetRandomValue()
  {   
   Random Seed = new Random();
   string RandomVaule = Seed.Next(1, int.MaxValue).ToString();
   return RandomVaule;
  }
  /// <summary>
  /// 哈希加密一个字符串
  /// </summary>
  /// <param name="Security"></param>
  /// <returns></returns>
  public static string HashEncoding(string Security)
  {      
   byte[] Value;
   UnicodeEncoding Code = new UnicodeEncoding();
   byte[] Message = Code.GetBytes(Security);
   SHA512Managed Arithmetic = new SHA512Managed();
   Value = Arithmetic.ComputeHash(Message);
   Security = "";
   foreach(byte o in Value)
   {
    Security += (int) o + "O";
   }
   return Security;
  }
 }
}