541 lines
19 KiB
C#
541 lines
19 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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namespace ViewModels
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{
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public class Tools
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{
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/// <summary>
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/// 时间戳转本地时间-时间戳精确到秒
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/// </summary>
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public static DateTime ToLocalTimeDateBySeconds(long unix)
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{
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var dto = DateTimeOffset.FromUnixTimeSeconds(unix);
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return dto.ToLocalTime().DateTime;
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}
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/// <summary>
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/// 时间转时间戳Unix-时间戳精确到秒
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/// </summary>
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public static long ToUnixTimestampBySeconds(DateTime dt)
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{
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DateTimeOffset dto = new DateTimeOffset(dt);
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return dto.ToUnixTimeSeconds();
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}
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/// <summary>
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/// 时间戳转本地时间-时间戳精确到毫秒
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/// </summary>
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public static DateTime ToLocalTimeDateByMilliseconds(long unix)
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{
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var dto = DateTimeOffset.FromUnixTimeMilliseconds(unix);
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return dto.ToLocalTime().DateTime;
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}
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/// <summary>
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/// 时间转时间戳Unix-时间戳精确到毫秒
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/// </summary>
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public static long ToUnixTimestampByMilliseconds(DateTime dt)
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{
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DateTimeOffset dto = new DateTimeOffset(dt);
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return dto.ToUnixTimeMilliseconds();
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}
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/// <summary>
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/// 生成CRC16校验
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/// </summary>
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/// <param name="buffer"></param>
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/// <param name="len"></param>
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/// <returns></returns>
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public static ushort CRC16(byte[] buffer, int len)
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{
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uint xda, xdapoly;
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byte xdabit;
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xda = 0xFFFF;
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xdapoly = 0xA001; // (X**16 + X**15 + X**2 + 1)
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for (int i = 0; i < len; i++)
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{
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xda ^= buffer[i];
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for (int j = 0; j < 8; j++)
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{
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xdabit = (byte)(xda & 0x01);
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xda >>= 1;
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if (xdabit == 1)
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{
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xda ^= xdapoly;
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}
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}
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}
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return Convert.ToUInt16(xda & 0xffff);
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}
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/// <summary>
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/// 计算文件的MD5值
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/// </summary>
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/// <param name="file"></param>
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/// <returns></returns>
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public static byte[] MD5(string file)
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{
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using (Stream stream = File.Open(file, FileMode.Open))
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{
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return MD5(stream);
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}
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}
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/// <summary>
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/// 计算流的MD5值
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/// </summary>
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/// <param name="stream"></param>
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/// <returns></returns>
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public static byte[] MD5(Stream stream)
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{
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using (MD5 md5 = new MD5CryptoServiceProvider())
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{
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return md5.ComputeHash(stream);
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}
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}
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/// <summary>
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/// 计算文件MD5
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/// </summary>
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/// <param name="stream"></param>
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/// <returns></returns>
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public static string ComputeFileHash(Stream stream)
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{
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byte[] retVal = Tools.MD5(stream);
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < retVal.Length; i++)
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{
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sb.Append(retVal[i].ToString("x2"));
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}
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return sb.ToString();
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}
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/// <summary>
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/// 将MD5字符串转换成整型数组表示
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/// </summary>
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/// <param name="md5"></param>
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/// <returns></returns>
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public static uint[] MD5StringToUIntArray(string md5)
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{
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if (String.IsNullOrWhiteSpace(md5))
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{
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throw new ArgumentException("参数不能为空。", "md5");
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}
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try
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{
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uint[] md5Arr = new uint[4] { 0, 0, 0, 0 };
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md5Arr[0] = Convert.ToUInt32(md5.Substring(0, 8), 16);
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md5Arr[1] = Convert.ToUInt32(md5.Substring(8, 8), 16);
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md5Arr[2] = Convert.ToUInt32(md5.Substring(16, 8), 16);
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md5Arr[3] = Convert.ToUInt32(md5.Substring(24, 8), 16);
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return md5Arr;
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}
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catch (Exception ex)
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{
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throw new ApplicationException("转换MD5出错。", ex);
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}
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}
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/// <summary>
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/// 用MD5加密字符串
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/// </summary>
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/// <param name="str">待加密的字符串</param>
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/// <returns></returns>
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public static string MD5Encrypt(string str)
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{
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MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();
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byte[] hashedDataBytes;
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hashedDataBytes = md5Hasher.ComputeHash(Encoding.UTF8.GetBytes(str));
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StringBuilder tmp = new StringBuilder();
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foreach (byte i in hashedDataBytes)
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{
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tmp.Append(i.ToString("x2"));
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}
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return tmp.ToString();
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}
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/// <summary>
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/// 获取指定长的的字符串对应的16进制字节码，如果长度不够，末位自动补0
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/// </summary>
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/// <param name="s"></param>
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/// <param name="length"></param>
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/// <returns></returns>
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public static byte[] GetBytes(String str, int length)
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{
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byte[] s = System.Text.Encoding.GetEncoding("gb2312").GetBytes(str);
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int fixLength = length - s.Length;
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if (s.Length < length)
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{
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byte[] S_bytes = new byte[length];
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Array.Copy(s, 0, S_bytes, 0, s.Length);
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for (int x = length - fixLength; x < length; x++)
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{
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S_bytes[x] = 0x00;
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}
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return S_bytes;
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}
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return s;
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}
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/// 获取一个随机数组
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/// </summary>
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/// <param name="num">数组个数</param>
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/// <param name="minValue"></param>
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/// <param name="maxValue"></param>
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/// <returns></returns>
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public static int[] GetRandomNum(int num, int minValue, int maxValue)
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{
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Random ra = new Random(unchecked((int)DateTime.Now.Ticks));
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int[] arrNum = new int[num];
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int tmp = 0;
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for (int i = 0; i <= num - 1; i++)
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{
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tmp = ra.Next(minValue, maxValue); //随机取数
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arrNum[i] = tmp;
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}
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return arrNum;
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}
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/// <summary>
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/// 字节内容转换为字符串
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/// </summary>
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/// <param name="bytesData"></param>
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/// <returns></returns>
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public static string ByteToString(byte[] bytesData)
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{
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StringBuilder result = new StringBuilder();
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foreach (byte r in bytesData)
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{
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result.Append(r.ToString("X2") + " ");
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}
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return result.ToString().Trim();
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}
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/// <summary>
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/// 把int32类型的数据转存到2个字节的byte数组中
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/// </summary>
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/// <param name="m">int32类型的数据</param>
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/// <param name="arry">2个字节大小的byte数组</param>
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/// <returns></returns>
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public static byte[] Int32ToByte(Int32 data)
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{
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byte[] arry = new byte[2];
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arry[0] = (byte)((data & 0xFF00) >> 8);
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arry[1] = (byte)(data & 0xFF);
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return arry;
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}
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/// <summary>
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/// 把int32类型的数据转存到2个字节的byte数组中：小端
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/// </summary>
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/// <param name="data"></param>
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/// <returns></returns>
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public static byte[] Int32ToByte2(Int32 data)
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{
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byte[] arry = new byte[2];
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arry[0] = (byte)(data & 0xFF);
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arry[1] = (byte)((data & 0xFF00) >> 8);
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//arry[2] = (byte)((data & 0xFF0000) >> 16);
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//arry[3] = (byte)((data >> 24) & 0xFF);
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return arry;
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}
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/// <summary>
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/// 2位byte转换为int类型
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/// </summary>
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/// <param name="data"></param>
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/// <returns></returns>
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public static int ByteToInt(byte[] data)
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{
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return (data[1] & 0xFF) << 8 | data[0];
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}
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/// <summary>
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/// 4位byte转换为long类型
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/// </summary>
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/// <param name="data"></param>
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/// <returns></returns>
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public static long Byte4ToLong(byte[] data)
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{
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return (data[3] << 24) & 0xFF | (data[2] & 0xFF00) << 16 | (data[1] & 0xFF) << 8 | data[0];
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}
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/// <summary>
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/// long类型转换为4位byte
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/// </summary>
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/// <param name="data"></param>
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/// <returns></returns>
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public static byte[] LongToByte4(long data)
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{
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byte[] arry = new byte[4];
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arry[0] = (byte)(data & 0xFF);
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arry[1] = (byte)((data & 0xFF00) >> 8);
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arry[2] = (byte)((data & 0xFF0000) >> 16);
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arry[3] = (byte)((data >> 24) & 0xFF);
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return arry;
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}
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/// <summary>
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/// 得到字符串的长度，一个汉字算2个字符
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/// </summary>
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/// <param name="str">字符串</param>
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/// <returns>返回字符串长度</returns>
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public static int GetLength(string str)
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{
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if (str.Length == 0) return 0;
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ASCIIEncoding ascii = new ASCIIEncoding();
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int tempLen = 0;
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byte[] s = ascii.GetBytes(str);
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for (int i = 0; i < s.Length; i++)
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{
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if ((int)s[i] == 63)
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{
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tempLen += 2;
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}
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else
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{
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tempLen += 1;
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}
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}
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return tempLen;
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}
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/// <summary>
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/// HEX编码转换为——>ASCII编码
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/// </summary>
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/// <param name="Msg"></param>
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/// <returns></returns>
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public static string HexToASCII(string Msg)
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{
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byte[] buff = new byte[Msg.Length / 2];
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string Message = "";
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for (int i = 0; i < buff.Length; i++)
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{
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buff[i] = byte.Parse(Msg.Substring(i * 2, 2), System.Globalization.NumberStyles.HexNumber);
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}
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System.Text.Encoding chs = System.Text.Encoding.ASCII;
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Message = chs.GetString(buff);
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return Message;
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}
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/// <summary>
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/// HEX编码转换为——>字符串
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/// </summary>
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/// <param name="Msg"></param>
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/// <returns></returns>
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public static string HexToStr(string Msg)
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{
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byte[] buff = new byte[Msg.Length / 2];
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string Message = "";
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for (int i = 0; i < buff.Length; i++)
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{
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buff[i] = byte.Parse(Msg.Substring(i * 2, 2), System.Globalization.NumberStyles.HexNumber);
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}
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System.Text.Encoding chs = System.Text.Encoding.GetEncoding("gb2312");
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Message = chs.GetString(buff);
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return Message;
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}
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/// <summary>
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/// 字符串转化为——>HEX编码
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/// </summary>
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/// <param name="Msg"></param>
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/// <returns></returns>
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public static string StrToHex(string Msg)
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{
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byte[] bytes = System.Text.Encoding.Default.GetBytes(Msg);//转换为字节（十进制）
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string str = "";
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for (int i = 0; i < bytes.Length; i++)
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{
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str += string.Format("{0:X}", bytes[i]); //转换为十六进制
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}
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return str;
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}
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public static string GetCurrentTimeStamp()
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{
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TimeSpan ts = DateTime.Now.ToLocalTime() - new DateTime(1970, 1, 1, 8, 0, 0, 0, DateTimeKind.Utc);
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string current_timestamp = Convert.ToInt64(ts.TotalSeconds).ToString();
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return current_timestamp;
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}
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/// <summary>
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/// 16进制字符串 转换成 byte 数组
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/// </summary>
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/// <param name="hexString"></param>
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/// <returns></returns>
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public static byte[] HEXString2ByteArray(string hexString)
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{
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char[] hexCharacters = hexString.ToCharArray();
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byte[] byteArray = new byte[hexCharacters.Length / 2];
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for (int i = 0; i < byteArray.Length; i++)
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{
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string hexVal = string.Concat(hexCharacters[i * 2], hexCharacters[i * 2 + 1]);
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byteArray[i] = Convert.ToByte(hexVal, 16);
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}
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return byteArray;
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}
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public static byte CombineBitsToByte(bool bit0, bool bit1, bool bit2, bool bit3)
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{
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byte result = (byte)((bit0 ? 1 : 0) << 3); // 将bit0移到第4位（高位）
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result |= (byte)((bit1 ? 1 : 0) << 2); // 将bit1移到第3位
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result |= (byte)((bit2 ? 1 : 0) << 1); // 将bit2移到第2位
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result |= (byte)(bit3 ? 1 : 0); // 将bit3移到第1位（低位）
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return result;
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}
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/// <summary>
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/// AES 加密
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/// </summary>
|
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/// <param name="str"></param>
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/// <param name="key"></param>
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/// <returns></returns>
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public static string AesEncrypt(string str, string key)
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{
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if (string.IsNullOrEmpty(str)) return null;
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Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);
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System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
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{
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Key = Encoding.UTF8.GetBytes(key),
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Mode = System.Security.Cryptography.CipherMode.ECB,
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Padding = System.Security.Cryptography.PaddingMode.PKCS7
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};
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System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateEncryptor();
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Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
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return Convert.ToBase64String(resultArray, 0, resultArray.Length);
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}
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public static readonly byte[] IV = new byte[] { 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };
|
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/// <summary>
|
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/// AES CTR 加密
|
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/// </summary>
|
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/// <param name="str"></param>
|
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/// <param name="key"></param>
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/// <returns></returns>
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public static byte[] AesEncryptCTR(byte[] str, byte[] key)
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{
|
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//byte[] mySimpleTextAsBytes = System.Text.Encoding.ASCII.GetBytes(str);
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//byte[] key = new byte[] { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };
|
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// Encrypt
|
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AES_CTR forEncrypting = new AES_CTR(key, IV);
|
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byte[] encryptedContent = new byte[str.Length];
|
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forEncrypting.EncryptBytes(encryptedContent, str);
|
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return encryptedContent;
|
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}
|
||
|
||
/// <summary>
|
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/// AES CRT解密
|
||
/// </summary>
|
||
/// <param name="encryptedContent"></param>
|
||
/// <param name="key"></param>
|
||
/// <returns></returns>
|
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public static byte[] AesDecryptCTR(byte[] encryptedContent, byte[] key)
|
||
{
|
||
// Decrypt
|
||
AES_CTR forDecrypting = new AES_CTR(key, IV);
|
||
byte[] decryptedContent = new byte[encryptedContent.Length];
|
||
forDecrypting.DecryptBytes(decryptedContent, encryptedContent);
|
||
return decryptedContent;
|
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}
|
||
|
||
/// <summary>
|
||
/// AES 解密
|
||
/// </summary>
|
||
/// <param name="str"></param>
|
||
/// <param name="key"></param>
|
||
/// <returns></returns>
|
||
public static string AesDecrypt(string str, string key)
|
||
{
|
||
if (string.IsNullOrEmpty(str)) return null;
|
||
Byte[] toEncryptArray = Convert.FromBase64String(str);
|
||
|
||
System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
|
||
{
|
||
Key = Encoding.UTF8.GetBytes(key),
|
||
Mode = System.Security.Cryptography.CipherMode.ECB,
|
||
Padding = System.Security.Cryptography.PaddingMode.PKCS7
|
||
};
|
||
|
||
System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateDecryptor();
|
||
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
|
||
|
||
return Encoding.UTF8.GetString(resultArray);
|
||
}
|
||
|
||
public static string GetMD5(string str)
|
||
{
|
||
//创建MD5对象
|
||
MD5 mD5 = System.Security.Cryptography.MD5.Create();
|
||
byte[] buffer = Encoding.Default.GetBytes(str);
|
||
var MD5Buffer = mD5.ComputeHash(buffer);
|
||
//将字节数组转换为字符串
|
||
//法一：将字节数组中每个元素按照指定的编码格式解析成字符串
|
||
//return Encoding.Default.GetString(MD5Buffer);(会造成乱码)
|
||
//法二：直接将数组tostring
|
||
//法三：直接将数组中的每个元素ToString()
|
||
string s = "";
|
||
for (int i = 0; i < MD5Buffer.Length; i++)
|
||
{
|
||
s += MD5Buffer[i].ToString("x");//tostring中的参数x是将10进制转化为16进制
|
||
}
|
||
return s;
|
||
}
|
||
|
||
|
||
/// <summary>
|
||
/// IOT 加密 方法
|
||
/// </summary>
|
||
/// <param name="sn"></param>
|
||
/// <param name="skey"></param>
|
||
/// <param name="data"></param>
|
||
/// <param name="alen"></param>
|
||
/// <returns></returns>
|
||
public static byte[] IHIOT_Message_Content_Encrypt(ushort sn, byte[] skey, byte[] data)
|
||
{
|
||
byte[] newdata = new byte[data.Length];
|
||
Buffer.BlockCopy(data, 0, newdata, 0, newdata.Length);
|
||
byte key = skey[sn % 16];
|
||
|
||
int alen = newdata.Length;
|
||
for (int i = 0; i < alen; i++)
|
||
{
|
||
newdata[i] ^= key; // 使用固定密钥字节进行异或加密
|
||
}
|
||
return newdata;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 解密方法
|
||
/// </summary>
|
||
/// <param name="sn"></param>
|
||
/// <param name="skey"></param>
|
||
/// <param name="data"></param>
|
||
/// <param name="alen"></param>
|
||
/// <returns></returns>
|
||
public byte[] IHIOT_Message_Content_DEncrypt(ushort sn, byte[] skey, byte[] data, ushort alen)
|
||
{
|
||
byte[] newdata = new byte[data.Length];
|
||
Buffer.BlockCopy(data, 0, newdata, 0, newdata.Length);
|
||
byte key = skey[sn % 16];
|
||
|
||
for (int i = 0; i < alen; i++)
|
||
{
|
||
newdata[i] ^= key; // 使用固定密钥字节进行异或加密
|
||
}
|
||
return newdata;
|
||
}
|
||
}
|
||
}
|