添加项目文件。

Core/MAX.Core/Cryptography/Base64Helper.cs

@@ -0,0 +1,69 @@
+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);
+	}
+}