From cb28c31519b7881415a5735b72bb0c63b253fc01 Mon Sep 17 00:00:00 2001
From: 2dust <31833384+2dust@users.noreply.github.com>
Date: Tue, 1 Jul 2025 19:19:15 +0800
Subject: [PATCH] Remove unused

---
 v2rayN/ServiceLib/Common/AesUtils.cs | 100 ---------------------------
 v2rayN/ServiceLib/Common/DesUtils.cs |  74 --------------------
 2 files changed, 174 deletions(-)
 delete mode 100644 v2rayN/ServiceLib/Common/AesUtils.cs
 delete mode 100644 v2rayN/ServiceLib/Common/DesUtils.cs

diff --git a/v2rayN/ServiceLib/Common/AesUtils.cs b/v2rayN/ServiceLib/Common/AesUtils.cs
deleted file mode 100644
index 05f1cb38..00000000
--- a/v2rayN/ServiceLib/Common/AesUtils.cs
+++ /dev/null
@@ -1,100 +0,0 @@
-using System.Security.Cryptography;
-using System.Text;
-
-namespace ServiceLib.Common;
-
-public class AesUtils
-{
-    private const int KeySize = 256; // AES-256
-    private const int IvSize = 16;   // AES block size
-    private const int Iterations = 10000;
-    private static readonly byte[] Salt = Encoding.ASCII.GetBytes("saltysalt".PadRight(16, ' ')); 
-    private static readonly string DefaultPassword = Utils.GetMd5(Utils.GetHomePath() + "AesUtils");
-
-    /// <summary>
-    /// Encrypt
-    /// </summary>
-    /// <param name="text">Plain text</param>
-    /// <param name="password">Password for key derivation or direct key in ASCII bytes</param>
-    /// <returns>Base64 encoded cipher text with IV</returns>
-    public static string Encrypt(string text, string? password = null)
-    {
-        if (string.IsNullOrEmpty(text))
-            return string.Empty;
-
-        var plaintext = Encoding.UTF8.GetBytes(text);
-        var key = GetKey(password);
-        var iv = GenerateIv();
-
-        using var aes = Aes.Create();
-        aes.Key = key;
-        aes.IV = iv;
-
-        using var ms = new MemoryStream();
-        ms.Write(iv, 0, iv.Length);
-
-        using (var cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))
-        {
-            cs.Write(plaintext, 0, plaintext.Length);
-            cs.FlushFinalBlock();
-        }
-
-        var cipherTextWithIv = ms.ToArray();
-        return Convert.ToBase64String(cipherTextWithIv);
-    }
-
-    /// <summary>
-    /// Decrypt
-    /// </summary>
-    /// <param name="cipherTextWithIv">Base64 encoded cipher text with IV</param>
-    /// <param name="password">Password for key derivation or direct key in ASCII bytes</param>
-    /// <returns>Plain text</returns>
-    public static string Decrypt(string cipherTextWithIv, string? password = null)
-    {
-        if (string.IsNullOrEmpty(cipherTextWithIv))
-            return string.Empty;
-
-        var cipherTextWithIvBytes = Convert.FromBase64String(cipherTextWithIv);
-        var key = GetKey(password);
-
-        var iv = new byte[IvSize];
-        Buffer.BlockCopy(cipherTextWithIvBytes, 0, iv, 0, IvSize);
-
-        var cipherText = new byte[cipherTextWithIvBytes.Length - IvSize];
-        Buffer.BlockCopy(cipherTextWithIvBytes, IvSize, cipherText, 0, cipherText.Length);
-
-        using var aes = Aes.Create();
-        aes.Key = key;
-        aes.IV = iv;
-
-        using var ms = new MemoryStream();
-        using (var cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Write))
-        {
-            cs.Write(cipherText, 0, cipherText.Length);
-            cs.FlushFinalBlock();
-        }
-
-        var plainText = ms.ToArray();
-        return Encoding.UTF8.GetString(plainText);
-    }
-
-    private static byte[] GetKey(string? password)
-    {
-        if (password.IsNullOrEmpty())
-        {
-            password = DefaultPassword;
-        }
-
-        using var pbkdf2 = new Rfc2898DeriveBytes(password, Salt, Iterations, HashAlgorithmName.SHA256);
-        return pbkdf2.GetBytes(KeySize / 8);
-    }
-
-    private static byte[] GenerateIv()
-    {
-        var randomNumber = new byte[IvSize];
-
-        using var rng = RandomNumberGenerator.Create();
-        rng.GetBytes(randomNumber);
-        return randomNumber;
-    }
-}
diff --git a/v2rayN/ServiceLib/Common/DesUtils.cs b/v2rayN/ServiceLib/Common/DesUtils.cs
deleted file mode 100644
index aae02206..00000000
--- a/v2rayN/ServiceLib/Common/DesUtils.cs
+++ /dev/null
@@ -1,74 +0,0 @@
-using System.Security.Cryptography;
-using System.Text;
-
-namespace ServiceLib.Common;
-
-public class DesUtils
-{
-    /// <summary>
-    /// Encrypt
-    /// </summary>
-    /// <param name="text"></param>
-    /// /// <param name="key"></param>
-    /// <returns></returns>
-    public static string Encrypt(string? text, string? key = null)
-    {
-        if (text.IsNullOrEmpty())
-        {
-            return string.Empty;
-        }
-        GetKeyIv(key ?? GetDefaultKey(), out var rgbKey, out var rgbIv);
-        var dsp = DES.Create();
-        using var memStream = new MemoryStream();
-        using var cryStream = new CryptoStream(memStream, dsp.CreateEncryptor(rgbKey, rgbIv), CryptoStreamMode.Write);
-        using var sWriter = new StreamWriter(cryStream);
-        sWriter.Write(text);
-        sWriter.Flush();
-        cryStream.FlushFinalBlock();
-        memStream.Flush();
-        return Convert.ToBase64String(memStream.GetBuffer(), 0, (int)memStream.Length);
-    }
-
-    /// <summary>
-    /// Decrypt
-    /// </summary>
-    /// <param name="encryptText"></param>
-    /// <param name="key"></param>
-    /// <returns></returns>
-    public static string Decrypt(string? encryptText, string? key = null)
-    {
-        if (encryptText.IsNullOrEmpty())
-        {
-            return string.Empty;
-        }
-        GetKeyIv(key ?? GetDefaultKey(), out var rgbKey, out var rgbIv);
-        var dsp = DES.Create();
-        var buffer = Convert.FromBase64String(encryptText);
-
-        using var memStream = new MemoryStream();
-        using var cryStream = new CryptoStream(memStream, dsp.CreateDecryptor(rgbKey, rgbIv), CryptoStreamMode.Write);
-        cryStream.Write(buffer, 0, buffer.Length);
-        cryStream.FlushFinalBlock();
-        return Encoding.UTF8.GetString(memStream.ToArray());
-    }
-
-    private static void GetKeyIv(string key, out byte[] rgbKey, out byte[] rgbIv)
-    {
-        if (key.IsNullOrEmpty())
-        {
-            throw new ArgumentNullException("The key cannot be null");
-        }
-        if (key.Length <= 8)
-        {
-            throw new ArgumentNullException("The key length cannot be less than 8 characters.");
-        }
-
-        rgbKey = Encoding.ASCII.GetBytes(key.Substring(0, 8));
-        rgbIv = Encoding.ASCII.GetBytes(key.Insert(0, "w").Substring(0, 8));
-    }
-
-    private static string GetDefaultKey()
-    {
-        return Utils.GetMd5(Utils.GetHomePath() + "DesUtils");
-    }
-}