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

namespace LY.App.Common.Cypher
{
    public class MD5CypherUtil
    {
        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="str">内容</param>
        /// <returns></returns>
        public static string Hash(string str)
        {
            return Hash(Encoding.UTF8.GetBytes(str));
        }

        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="buffer"></param>
        /// <returns></returns>
        public static string Hash(byte[] buffer)
        {
            return BitConverter.ToString(BinaryHash(buffer)).Replace("-", "");
        }

        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="buffer"></param>
        /// <returns></returns>
        public static byte[] BinaryHash(string str)
        {
            return BinaryHash(Encoding.UTF8.GetBytes(str));
        }

        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="buffer"></param>
        /// <returns></returns>
        public static byte[] BinaryHash(byte[] buffer)
        {
            using (var md5 = MD5.Create())
            {
                return md5.ComputeHash(buffer);
            }
        }
    }
}