修复163key获取错误

wwh1004 · Sep 1, 2019 · 9485d9b · 9485d9b
1 parent 9dd3a64
commit 9485d9b
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Showing 2 changed files with 8 additions and 18 deletions.
diff --git a/NLyric/NLyric.csproj b/NLyric/NLyric.csproj
@@ -1,11 +1,11 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyName>NLyric</AssemblyName>
     <Title>NLyric</Title>
     <Product>NLyric</Product>
     <Copyright>Copyright © 2019 Wwh</Copyright>
-    <AssemblyVersion>2.2.5.2</AssemblyVersion>
-    <FileVersion>2.2.5.2</FileVersion>
+    <AssemblyVersion>2.2.5.3</AssemblyVersion>
+    <FileVersion>2.2.5.3</FileVersion>
     <OutputPath>..\bin\$(Configuration)</OutputPath>
     <OutputType>Exe</OutputType>
     <TargetFrameworks>netcoreapp2.1;net472</TargetFrameworks>

diff --git a/NLyric/The163KeyHelper.cs b/NLyric/The163KeyHelper.cs
@@ -2,11 +2,11 @@
 using System.IO;
 using System.Security.Cryptography;
 using System.Text;
+using Newtonsoft.Json.Linq;
 
 namespace NLyric {
 	/// <summary>
-	/// 通过163Key直接获取歌曲ID，
-	/// 代码来自我原来的项目： https://github.com/wwh1004/netease-cloudmusic-lyrics-downloader
+	/// 通过163Key直接获取歌曲ID
 	/// </summary>
 	internal static class The163KeyHelper {
 		private static readonly byte[] _163Start = Encoding.UTF8.GetBytes("163 key(Don't modify):");
@@ -71,19 +71,9 @@ private static byte[] Get163Key(string filePath, bool isMp3) {
 
 		private static int GetMusicId(byte[] byt163Key) {
 			byt163Key = Convert.FromBase64String(Encoding.UTF8.GetString(byt163Key));
-			byt163Key = _aes.CreateDecryptor().TransformFinalBlock(byt163Key, 0, byt163Key.Length);
-			return int.Parse(Encoding.UTF8.GetString(byt163Key, 17, GetIndex(byt163Key, 0x2C, 17) - 17));
-		}
-
-		private static int GetIndex(byte[] src, byte dest, int startIndex) {
-			return GetIndex(src, dest, startIndex, src.Length - 1);
-		}
-
-		private static int GetIndex(byte[] src, byte dest, int startIndex, int endIndex) {
-			for (int i = startIndex; i < endIndex + 1; i++)
-				if (src[i] == dest)
-					return i;
-			return -1;
+			using (ICryptoTransform cryptoTransform = _aes.CreateDecryptor())
+				byt163Key = cryptoTransform.TransformFinalBlock(byt163Key, 0, byt163Key.Length);
+			return (int)JObject.Parse(Encoding.UTF8.GetString(byt163Key).Substring(6))["musicId"];
 		}
 
 		private static int GetIndex(byte[] src, byte[] dest, int startIndex) {