c# md5 加密byte[]

shuihan20e 2014-02-10 03:34:13

结构体声明如下



    [StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]

    struct TMsgHeadInfo

    {

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]

        public char[] MsgCode;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]

        public char[] MsgType; public byte SenderType;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]

        public char[] Sender; public byte ReceiverType;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]

        public char[] Receiver; public int TotalLength;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]

        public char[] VerifyCode;

    }



    [StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]

    struct TDevCheck

    {

        public byte DevType;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]

        public char[] DevCode;

        public Int32 OutTime;

    }

    

    [StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]

    struct TDevChecks

    {

        public TMsgHeadInfo MsgHead;

        public TDevCheck DevCheck;

    }



            TDevChecks DevChecks;// = new TDevChecks();

            DevChecks.MsgHead.MsgCode = "02".ToCharArray();

            DevChecks.MsgHead.MsgType = "02".ToCharArray();

            DevChecks.MsgHead.Receiver = "000000".ToCharArray();

            DevChecks.MsgHead.ReceiverType = 4;

            DevChecks.MsgHead.Sender = "280300".ToCharArray();//Global.sLocalCode.ToCharArray();

            DevChecks.MsgHead.SenderType = 1;

            DevChecks.MsgHead.TotalLength = 69;

            DevChecks.MsgHead.VerifyCode = "235A3ECDB49A612AFDE4F4C3D6735D5D".ToCharArray();

            DevChecks.DevCheck.DevCode = "2803004004".ToCharArray();

            DevChecks.DevCheck.DevType = 1;

            DevChecks.DevCheck.OutTime = Global.nCheckOutTime;

            DevChecks.MsgHead.VerifyCode =MD5Byte(Global.tool.StructToBytes(DevChecks.DevCheck)).ToCharArray();

            string md5 = new string(DevChecks.MsgHead.VerifyCode);

            txt.Text = md5;

如上面的代码，C#算出的是
9ACFE5A41240B9D8AC6B47F46D9BA2F
其他语言算出的如下
9ACFE5A41240B9D8AC06B47F46D9BA2F
也就是少了一位，应该是32位，却是31位

MD5加密算法如下

        public string MD5Byte(byte[] by)

        {

            string pwd = "";

            MD5 md5 = MD5.Create();

            byte[] s = md5.ComputeHash(by);

            for (int i = 0; i < s.Length; i++)

            {

                pwd = pwd + s[i].ToString("X");

            }

            return pwd;

        }

结构体转byte[]算法如下

        public Byte[] StructToBytes(Object structure)

        {

            Int32 size = Marshal.SizeOf(structure);

            //Console.WriteLine(size);

            IntPtr buffer = Marshal.AllocHGlobal(size);

            try

            {

                Marshal.StructureToPtr(structure, buffer, false);

                Byte[] bytes = new Byte[size];

                Marshal.Copy(buffer, bytes, 0, size);

                return bytes;

            }

            finally

            {

                Marshal.FreeHGlobal(buffer);

            }

        }