添加项目文件。

Core/MAX.Core/Cryptography/Base64Helper.cs

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+using System;
+using System.Text;
+
+namespace MAX.Core.Cryptography;
+
+public class Base64Helper
+{
+	/// <summary>
+	/// Base64加密
+	/// </summary>
+	/// <param name="codeName">加密采用的编码方式</param>
+	/// <param name="source">待加密的明文</param>
+	/// <returns></returns>
+	public static string Encode(string source, Encoding encode)
+	{
+		string encodeValue = "";
+		byte[] bytes = encode.GetBytes(source);
+		try
+		{
+			encodeValue = Convert.ToBase64String(bytes);
+		}
+		catch
+		{
+			encodeValue = source;
+		}
+		return encodeValue;
+	}
+
+	/// <summary>
+	/// Base64加密，采用utf8编码方式加密
+	/// </summary>
+	/// <param name="source">待加密的明文</param>
+	/// <returns>加密后的字符串</returns>
+	public static string Encode(string source)
+	{
+		return Encode(source, Encoding.UTF8);
+	}
+
+	/// <summary>
+	/// Base64解密
+	/// </summary>
+	/// <param name="codeName">解密采用的编码方式，注意和加密时采用的方式一致</param>
+	/// <param name="result">待解密的密文</param>
+	/// <returns>解密后的字符串</returns>
+	public static string Decode(string result, Encoding encode)
+	{
+		string decode = "";
+		byte[] bytes = Convert.FromBase64String(result);
+		try
+		{
+			decode = encode.GetString(bytes);
+		}
+		catch
+		{
+			decode = result;
+		}
+		return decode;
+	}
+
+	/// <summary>
+	/// Base64解密，采用utf8编码方式解密
+	/// </summary>
+	/// <param name="result">待解密的密文</param>
+	/// <returns>解密后的字符串</returns>
+	public static string Decode(string result)
+	{
+		return Decode(result, Encoding.UTF8);
+	}
+}

Core/MAX.Core/Cryptography/DESHelper.cs

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+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace MAX.Core.Cryptography;
+
+public sealed class DESHelper
+{
+
+	//默认密钥向量
+	private static readonly byte[] IVKey = { 36, 109, 97, 120, 111, 110, 120, 36 };
+	/// <summary>
+	/// DES加密字符串
+	/// </summary>
+	/// <param name="encryptString">待加密的字符串</param>
+	/// <param name="encryptKey">加密密钥,要求为8位</param>
+	/// <returns>加密成功返回加密后的字符串,失败返回源串</returns>
+	public static string Encrypt(string encryptString, string encryptKey)
+	{
+		try
+		{
+			encryptKey = GetSubString(encryptKey, 8, "");
+			encryptKey = encryptKey.PadRight(8, ' ');
+			byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
+			byte[] rgbIV = IVKey;
+			byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
+			DES dCSP = DES.Create();
+			MemoryStream mStream = new();
+			CryptoStream cStream = new(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
+			cStream.Write(inputByteArray, 0, inputByteArray.Length);
+			cStream.FlushFinalBlock();
+			return Convert.ToBase64String(mStream.ToArray());
+		}
+		catch
+		{
+			return encryptString;
+		}
+	}
+
+	/// <summary>
+	/// DES解密字符串
+	/// </summary>
+	/// <param name="decryptString">待解密的字符串</param>
+	/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
+	/// <returns>解密成功返回解密后的字符串,失败返源串</returns>
+	public static string Decrypt(string decryptString, string decryptKey)
+	{
+		try
+		{
+			decryptKey = GetSubString(decryptKey, 0, 8, "");
+			decryptKey = decryptKey.PadRight(8, ' ');
+			byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
+			byte[] rgbIV = IVKey;
+			byte[] inputByteArray = Convert.FromBase64String(decryptString);
+			DES DCSP = DES.Create();
+
+			MemoryStream mStream = new();
+			CryptoStream cStream = new(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
+			cStream.Write(inputByteArray, 0, inputByteArray.Length);
+			cStream.FlushFinalBlock();
+			return Encoding.UTF8.GetString(mStream.ToArray());
+		}
+		catch
+		{
+			return string.Empty;
+		}
+
+	}
+
+	#region 截取字符串函数
+
+	/// <summary>
+	/// 截取字符串函数
+	/// </summary>
+	/// <param name="Str">所要截取的字符串</param>
+	/// <param name="Num">截取字符串的长度</param>
+	/// <returns></returns>
+	public static string GetSubString(string Str, int Num)
+	{
+		if (Str is null or "")
+		{
+			return "";
+		}
+		string outstr = string.Empty;
+		int n = 0;
+		foreach (char ch in Str)
+		{
+			n += Encoding.Default.GetByteCount(ch.ToString());
+
+			if (n > Num)
+			{
+				break;
+			}
+			else
+			{
+				outstr += ch;
+			}
+		}
+
+		return outstr;
+	}
+	/// <summary>
+	/// 截取字符串函数,如果超过指定长度则将超出的部分用指定字符串代替
+	/// </summary>
+	/// <param name="Str">所要截取的字符串</param>
+	/// <param name="Num">截取字符串的长度</param>
+	/// <param name="LastStr">截取字符串后省略部分的字符串</param>
+	/// <returns></returns>
+	public static string GetSubString(string Str, int Num, string LastStr)
+	{
+		return GetSubString(Str, 0, Num, LastStr);
+	}
+
+	#endregion
+
+	#region 截取字符串，超过部分用指定字符串替换
+
+	/* 宗波于 2010-6-12 日添加， 来源于DiscuzNt */
+	/// <summary>
+	/// 取指定长度的字符串
+	/// </summary>
+	/// <param name="p_SrcString">要检查的字符串</param>
+	/// <param name="p_StartIndex">起始位置</param>
+	/// <param name="p_Length">指定长度</param>
+	/// <param name="p_TailString">用于替换的字符串</param>
+	/// <returns>截取后的字符串</returns>
+	public static string GetSubString(string p_SrcString, int p_StartIndex, int p_Length, string p_TailString)
+	{
+		string myResult = p_SrcString;
+
+		byte[] bComments = Encoding.UTF8.GetBytes(p_SrcString);
+		foreach (char c in Encoding.UTF8.GetChars(bComments))
+		{    //当是日文或韩文时(注:中文的范围:\u4e00 - \u9fa5, 日文在\u0800 - \u4e00, 韩文为\xAC00-\xD7A3)
+			if (c is (> '\u0800' and < '\u4e00') or (> '\xAC00' and < '\xD7A3'))
+			{
+				//if (System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[\u0800-\u4e00]+") || System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[\xAC00-\xD7A3]+"))
+				//当截取的起始位置超出字段串长度时
+				if (p_StartIndex >= p_SrcString.Length)
+				{
+					return "";
+				}
+				else
+				{
+					return p_SrcString.Substring(p_StartIndex,
+												   p_Length + p_StartIndex > p_SrcString.Length ? p_SrcString.Length - p_StartIndex : p_Length);
+				}
+			}
+		}
+
+		if (p_Length >= 0)
+		{
+			byte[] bsSrcString = Encoding.Default.GetBytes(p_SrcString);
+
+			//当字符串长度大于起始位置
+			if (bsSrcString.Length > p_StartIndex)
+			{
+				int p_EndIndex = bsSrcString.Length;
+
+				//当要截取的长度在字符串的有效长度范围内
+				if (bsSrcString.Length > p_StartIndex + p_Length)
+				{
+					p_EndIndex = p_Length + p_StartIndex;
+				}
+				else
+				{   //当不在有效范围内时,只取到字符串的结尾
+
+					p_Length = bsSrcString.Length - p_StartIndex;
+					p_TailString = "";
+				}
+
+				int nRealLength = p_Length;
+				int[] anResultFlag = new int[p_Length];
+				byte[] bsResult = null;
+
+				int nFlag = 0;
+				for (int i = p_StartIndex; i < p_EndIndex; i++)
+				{
+					if (bsSrcString[i] > 127)
+					{
+						nFlag++;
+						if (nFlag == 3)
+						{
+							nFlag = 1;
+						}
+					}
+					else
+					{
+						nFlag = 0;
+					}
+
+					anResultFlag[i] = nFlag;
+				}
+
+				if (bsSrcString[p_EndIndex - 1] > 127 && anResultFlag[p_Length - 1] == 1)
+				{
+					nRealLength = p_Length + 1;
+				}
+
+				bsResult = new byte[nRealLength];
+
+				Array.Copy(bsSrcString, p_StartIndex, bsResult, 0, nRealLength);
+
+				myResult = Encoding.Default.GetString(bsResult);
+				myResult += p_TailString;
+			}
+		}
+
+		return myResult;
+	}
+
+
+	#endregion
+
+}

Core/MAX.Core/Cryptography/MD5Helper.cs

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+using System;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace MAX.Core.Cryptography;
+
+public class MD5Helper
+{
+	/// <summary>
+	/// MD5加密
+	/// </summary>
+	/// <param name="instring"></param>
+	/// <returns></returns>
+	public static string Md5_32(string instring)
+	{
+		return _Md532(instring);
+	}
+	public static string Md5_Lower32(string instring)
+	{
+		return _Md532(instring, true);
+	}
+	public static string _Md532(string instring, bool IsLower = false)
+	{
+		byte[] result = Encoding.UTF8.GetBytes(string.IsNullOrEmpty(instring) ? "" : instring.Trim());
+		MD5 md5 = MD5.Create();
+		byte[] output = md5.ComputeHash(result);
+		string value = BitConverter.ToString(output).Replace("-", "");
+		if (IsLower)
+		{
+			return value.ToLower();
+		}
+		return value;
+	}
+
+
+	/// <summary>
+	/// MD5加密
+	/// </summary>
+	/// <returns></returns>
+	public static long GetLong(byte[] result)
+	{
+		return
+			Convert.ToInt64(
+				BitConverter.ToString(MD5.Create().ComputeHash(result), 4,
+					8).Replace("-", ""), 16);
+	}
+
+	/// <summary>
+	/// MD5 16位加密转long
+	/// </summary>
+	/// <param name="url"></param>
+	/// <returns></returns>
+	public static long GetLong(string url)
+	{
+		if (string.IsNullOrEmpty(url))
+		{
+			return 0;
+		}
+
+		return Convert.ToInt64(BitConverter.ToString(MD5.Create().ComputeHash(Encoding.Default.GetBytes(url)), 4, 8).Replace("-", ""), 16);
+	}
+}

Core/MAX.Core/Cryptography/UrlHelper.cs

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+using System.Text;
+
+namespace MAX.Core.Cryptography;
+
+/// <summary>
+/// Url 加密 解密
+/// </summary>
+public class UrlHelper
+{
+	/// <summary>
+	/// Url加密
+	/// </summary>
+	/// <param name="codeName">加密采用的编码方式</param>
+	/// <param name="source">待加密的明文</param>
+	/// <returns></returns>
+	public static string Encode(string source, Encoding encode)
+	{
+		return System.Web.HttpUtility.UrlEncode(source, encode);
+	}
+
+	/// <summary>
+	/// Url加密，采用utf8编码方式加密
+	/// </summary>
+	/// <param name="source">待加密的明文</param>
+	/// <returns>加密后的字符串</returns>
+	public static string Encode(string source)
+	{
+		return Encode(source, Encoding.UTF8);
+	}
+
+	/// <summary>
+	/// Url解密
+	/// </summary>
+	/// <param name="codeName">解密采用的编码方式，注意和加密时采用的方式一致</param>
+	/// <param name="result">待解密的密文</param>
+	/// <returns>解密后的字符串</returns>
+	public static string Decode(string result, Encoding encode)
+	{
+		return System.Web.HttpUtility.UrlDecode(result, Encoding.UTF8);
+	}
+
+	/// <summary>
+	/// Url解密，采用utf8编码方式解密
+	/// </summary>
+	/// <param name="result">待解密的密文</param>
+	/// <returns>解密后的字符串</returns>
+	public static string Decode(string result)
+	{
+		return Decode(result, Encoding.UTF8);
+	}
+}