diff --git a/framework/Fur/DataEncryption/AESEncryption.cs b/framework/Fur/DataEncryption/AESEncryption.cs
index 8187e155889ce01b77dd8efea276c27c885551fc..1101b2548cdc8d14f5327ee17e5185eba9d78cb3 100644
--- a/framework/Fur/DataEncryption/AESEncryption.cs
+++ b/framework/Fur/DataEncryption/AESEncryption.cs
@@ -1,6 +1,8 @@
 using Fur.DependencyInjection;
 using System;
+using System.Buffers.Text;
 using System.IO;
+using System.Runtime.CompilerServices;
 using System.Security.Cryptography;
 using System.Text;
 
@@ -25,21 +27,25 @@ namespace Fur.DataEncryption
             using var aesAlg = Aes.Create();
             using var encryptor = aesAlg.CreateEncryptor(encryptKey, aesAlg.IV);
             using var msEncrypt = new MemoryStream();
-            using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
+            using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write, true))
 
-            using (var swEncrypt = new StreamWriter(csEncrypt))
+            using (var swEncrypt = new StreamWriter(csEncrypt, leaveOpen: true))
             {
                 swEncrypt.Write(text);
             }
 
             var iv = aesAlg.IV;
-            var decryptedContent = msEncrypt.ToArray();
-            var result = new byte[iv.Length + decryptedContent.Length];
+            var dataLength = iv.Length + (int)msEncrypt.Length;
+            var decryptedContent = msEncrypt.GetBuffer();
+            var base64Length = Base64.GetMaxEncodedToUtf8Length(dataLength);
+            var result = new byte[base64Length];
 
-            Buffer.BlockCopy(iv, 0, result, 0, iv.Length);
-            Buffer.BlockCopy(decryptedContent, 0, result, iv.Length, decryptedContent.Length);
+            Unsafe.CopyBlock(ref result[0], ref iv[0], (uint)iv.Length);
+            Unsafe.CopyBlock(ref result[iv.Length], ref decryptedContent[0], (uint)msEncrypt.Length);
 
-            return Convert.ToBase64String(result);
+            Base64.EncodeToUtf8InPlace(result, dataLength, out base64Length);
+
+            return Encoding.ASCII.GetString(result.AsSpan()[..base64Length]);
         }
 
         /// <summary>
@@ -55,22 +61,16 @@ namespace Fur.DataEncryption
             var iv = new byte[16];
             var cipher = new byte[fullCipher.Length - iv.Length];
 
-            Buffer.BlockCopy(fullCipher, 0, iv, 0, iv.Length);
-            Buffer.BlockCopy(fullCipher, iv.Length, cipher, 0, fullCipher.Length - iv.Length);
+            Unsafe.CopyBlock(ref iv[0], ref fullCipher[0], (uint)iv.Length);
+            Unsafe.CopyBlock(ref cipher[0], ref fullCipher[iv.Length], (uint)(fullCipher.Length - iv.Length));
             var decryptKey = Encoding.UTF8.GetBytes(skey);
 
             using var aesAlg = Aes.Create();
             using var decryptor = aesAlg.CreateDecryptor(decryptKey, iv);
-            string result;
-            using (var msDecrypt = new MemoryStream(cipher))
-            {
-                using var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read);
-                using var srDecrypt = new StreamReader(csDecrypt);
-
-                result = srDecrypt.ReadToEnd();
-            }
-
-            return result;
+            using var msDecrypt = new MemoryStream(cipher);
+            using var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read);
+            using var srDecrypt = new StreamReader(csDecrypt);
+            return srDecrypt.ReadToEnd();
         }
     }
 }
\ No newline at end of file
diff --git a/framework/Fur/DataEncryption/MD5Encryption.cs b/framework/Fur/DataEncryption/MD5Encryption.cs
index e8e4c303a1d8824822d77e55971f9eeb133b0e8d..58d22000679ee32c1b5c50ce7ef7ee03791ec5c0 100644
--- a/framework/Fur/DataEncryption/MD5Encryption.cs
+++ b/framework/Fur/DataEncryption/MD5Encryption.cs
@@ -1,5 +1,6 @@
 using Fur.DependencyInjection;
 using System;
+using System.Reflection;
 using System.Security.Cryptography;
 using System.Text;
 
@@ -9,8 +10,17 @@ namespace Fur.DataEncryption
     /// MD5 加密
     /// </summary>
     [SkipScan]
-    public class MD5Encryption
+    public unsafe class MD5Encryption
     {
+        private const uint LOWERCASING = 0x2020U;
+
+        private static readonly delegate* managed<ReadOnlySpan<byte>, Span<char>, uint, void> _EncodeToUtf16Ptr;
+
+        static MD5Encryption()
+        {
+            _EncodeToUtf16Ptr = (delegate* managed<ReadOnlySpan<byte>, Span<char>, uint, void>)typeof(uint).Assembly.GetType("System.HexConverter").GetMethod("EncodeToUtf16", BindingFlags.Static | BindingFlags.Public).MethodHandle.GetFunctionPointer();
+        }
+
         /// <summary>
         /// 字符串 MD5 比较
         /// </summary>
@@ -22,8 +32,7 @@ namespace Fur.DataEncryption
             using var md5Hash = MD5.Create();
             var hashOfInput = Encrypt(text);
             var comparer = StringComparer.OrdinalIgnoreCase;
-            if (0 == comparer.Compare(hashOfInput, hash)) return true;
-            else return false;
+            return 0 == comparer.Compare(hashOfInput, hash);
         }
 
         /// <summary>
@@ -35,13 +44,9 @@ namespace Fur.DataEncryption
         {
             using var md5Hash = MD5.Create();
             var data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(text));
-
-            var sBuilder = new StringBuilder();
-            for (var i = 0; i < data.Length; i++)
-            {
-                sBuilder.Append(data[i].ToString("x2"));
-            }
-            return sBuilder.ToString();
+            Span<char> output = stackalloc char[32];
+            _EncodeToUtf16Ptr(data, output, LOWERCASING);
+            return new string(output);
         }
     }
 }
\ No newline at end of file
diff --git a/framework/Fur/Fur.csproj b/framework/Fur/Fur.csproj
index 7f9454e7061bfebb429f7872dec5012e063c20cf..b943496ff2e781dd3683cde7eebd4d9aff7e12ca 100644
--- a/framework/Fur/Fur.csproj
+++ b/framework/Fur/Fur.csproj
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>net5.0</TargetFramework>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <Authors>百小僧/MonkSoul</Authors>
     <Company>Baiqian Co.,Ltd.</Company>
     <Copyright>© 2020 Fur, Baiqian Co.,Ltd.</Copyright>