初始化

ConsoleApp1/ConsoleApp1.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

ConsoleApp1/Program.cs

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+using System.Security.Cryptography;
+using System.Text;
+
+namespace ConsoleApp1
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            string username = "boot";
+            string password = "#Ba~rk4ekf2,UdCW";
+            string u3 = string.Format("{0}:{1}", username, password);
+            //a8a5159edab2acadd2272b9a08e6d3b0
+            //a8a5159edab2acadd2272b9a8e6d3b0
+            //a8a5159edab2acadd2272b9a08e6d3b0
+            //a8a5159edab2acadd2272b9a08e6d3b0
+            //0001993c04ee2584d558e5004dd7ff2d
+            //a8a5159edab2acadd2272b9a08e6d3b0
+            string HHH = GetMD5(u3);
+            string hash = GetMD5Hash1(u3).ToLower();
+            Console.WriteLine("Hello, World!");
+        }
+
+        static string GetMD5Hash(string input)
+        {
+            using (HashAlgorithm algorithm = MD5.Create()) // 更现代的写法，自动处理资源释放
+            {
+                byte[] inputBytes = Encoding.UTF8.GetBytes(input); // 将字符串转换为字节数组
+                byte[] hashBytes = algorithm.ComputeHash(inputBytes); // 计算哈希值
+                return Convert.ToHexString(hashBytes); // 将字节数组转换为十六进制字符串（C# 8及以上版本）
+            }
+        }
+
+        static string GetMD5Hash1(string input)
+        {
+            StringBuilder sb = new StringBuilder(32); // 预分配32字符空间
+            using (HashAlgorithm algorithm = MD5.Create())
+            {
+                byte[] inputBytes = Encoding.UTF8.GetBytes(input);
+                byte[] hashBytes = algorithm.ComputeHash(inputBytes);
+
+                foreach (byte b in hashBytes)
+                {
+                    sb.Append(b.ToString("x2")); // 使用"x2"确保总是两位十六进制
+                }
+            }
+            return sb.ToString();
+        }
+        public static string GetMD5(string str)
+        {
+            //创建MD5对象
+            MD5 mD5 = 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;
+        }
+    }
+}