MARKUS

using System;

using System.Text;

namespace KCOM.Common

{

    public class Commons

    {

        public static string shortGuid()

        {

            char[] chars = "ABCDEF1234567890".ToCharArray();

            byte[] data = new byte[1];

            System.Security.Cryptography.RNGCryptoServiceProvider crypto = new System.Security.Cryptography.RNGCryptoServiceProvider();

            crypto.GetNonZeroBytes(data);

            data = new byte[32];

            crypto.GetNonZeroBytes(data);

            StringBuilder result = new StringBuilder(32);

            foreach (byte b in data)

            {

                result.Append(chars[b % (chars.Length - 1)]);

            }

            return result.ToString();

        }

        //GUID생성(최민수 사원 수정) //조장원 대리 다시 변경

        public static string shortGuidold()

        {

            byte[] bytes = new byte[16];

            using (var provider = System.Security.Cryptography.RandomNumberGenerator.Create())

            {

                provider.GetBytes(bytes);

            }

            var guid = new Guid(bytes);

            return Convert.ToBase64String(guid.ToByteArray())

                .Substring(0, 10)

                .Replace("/", "")

                .Replace("+", "") + DateTime.UtcNow.Ticks.ToString("x");

        }

        //조장원 네자리

        public static string shortCommentKey()

        {

            byte[] bytes = new byte[3];

            using (var provider = System.Security.Cryptography.RandomNumberGenerator.Create())

            {

                provider.GetBytes(bytes);

            }

            return Convert.ToBase64String(bytes);

        }

        //강인구 추가 

        public static string shortFileKey()

        {

            //byte[] bytes = new byte[3];

            //using (var provider = System.IO.Path.GetRandomFileName())

            //{

            //    provider.GetBytes(bytes);

            //}

            return System.IO.Path.GetRandomFileName();

        }

    }

}