├── example.gif ├── QMCDecode ├── Assets.xcassets │ ├── Contents.json │ ├── Success.imageset │ │ ├── Success.png │ │ └── Contents.json │ └── AppIcon.appiconset │ │ ├── QMCDecode16.png │ │ ├── QMCDecode32.png │ │ ├── QMCDecode64.png │ │ ├── QMCDecode1024.png │ │ ├── QMCDecode128.png │ │ ├── QMCDecode256-1.png │ │ ├── QMCDecode256.png │ │ ├── QMCDecode32-1.png │ │ ├── QMCDecode512-1.png │ │ ├── QMCDecode512.png │ │ └── Contents.json ├── QMCDecode.entitlements ├── AppDelegate.swift ├── WindowController.swift ├── Info.plist ├── TeaCipher.swift ├── Constants.swift ├── QMCKeyDecoder.swift ├── QMDecoder.swift ├── QMCipher.swift ├── ViewController.swift └── Base.lproj │ └── Main.storyboard ├── QMCDecode.xcodeproj ├── project.xcworkspace │ ├── contents.xcworkspacedata │ └── xcshareddata │ │ └── IDEWorkspaceChecks.plist ├── xcshareddata │ └── xcschemes │ │ └── QMCDecode.xcscheme └── project.pbxproj ├── README.md ├── QMCDecodeTests ├── Info.plist └── QMCDecodeTests.swift ├── LICENSE └── 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-------------------------------------------------------------------------------- /QMCDecode.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | IDEDidComputeMac32BitWarning 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /QMCDecode/Assets.xcassets/Success.imageset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "universal", 5 | "scale" : "1x" 6 | }, 7 | { 8 | "idiom" : "universal", 9 | "filename" : "Success.png", 10 | "scale" : "2x" 11 | }, 12 | { 13 | "idiom" : "universal", 14 | "scale" : "3x" 15 | } 16 | ], 17 | "info" : { 18 | "version" : 1, 19 | "author" : "xcode" 20 | } 21 | } -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # QMCDecode 2 | 3 | QQ音乐加密格式转换为普通格式，仅支持macOS，可自动识别到QQ音乐下载目录，默认转换结果存储到~/Music/QMCConvertOutput 4 | 5 | 可自定义需要转换的文件和输出路径 6 | 7 | 转换后tag不对可以使用[kid3](https://prdownloads.sourceforge.net/kid3/kid3-3.8.0-Darwin.dmg?download)进行修改, 支持批量 8 | 9 | 支持的格式如下 10 | 11 | * .qmcflac to flac 12 | * .qmc0 to mp3 13 | * .qmc2 to ogg 14 | * .qmc3 to mp3 15 | * .qmflac to flac 16 | * .mgg to ogg 17 | * .mgg1 to ogg 18 | * .qmcogg to ogg 19 | * .mflac to flac 20 | * .mflac0 to flac 21 | * .bkcmp3 to mp3 22 | * .bkcflac to flac 23 | 24 | ---- 25 | 示例 26 | 27 | ![示例图片](example.gif) 28 | 29 | 协议与许可 30 | 31 | MIT -------------------------------------------------------------------------------- /QMCDecode/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2019/8/26. 6 | // Copyright © 2019 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Cocoa 10 | 11 | @NSApplicationMain 12 | class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate { 13 | func applicationDidFinishLaunching(_ aNotification: Notification) { 14 | // Insert code here to initialize your application 15 | } 16 | 17 | func applicationWillTerminate(_ aNotification: Notification) { 18 | // Insert code here to tear down your application 19 | } 20 | } 21 | 22 | 23 | -------------------------------------------------------------------------------- /QMCDecode/WindowController.swift: -------------------------------------------------------------------------------- 1 | // 2 | // WindowController.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2019/8/26. 6 | // Copyright © 2019 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Cocoa 10 | 11 | class WindowController: NSWindowController { 12 | 13 | override func windowDidLoad() { 14 | super.windowDidLoad() 15 | 16 | self.window?.delegate = WindowDelegate.default 17 | } 18 | } 19 | 20 | class WindowDelegate: NSObject, NSWindowDelegate { 21 | static let `default`: WindowDelegate = { 22 | return WindowDelegate() 23 | }() 24 | 25 | func windowWillClose(_ notification: Notification) { 26 | NSApp.terminate(self) 27 | } 28 | } 29 | -------------------------------------------------------------------------------- /QMCDecodeTests/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | BNDL 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | 1 21 | 22 | 23 | -------------------------------------------------------------------------------- /QMCDecodeTests/QMCDecodeTests.swift: -------------------------------------------------------------------------------- 1 | // 2 | // QMCDecodeTests.swift 3 | // QMCDecodeTests 4 | // 5 | // Created by 龚杰洪 on 2019/8/26. 6 | // Copyright © 2019 龚杰洪. All rights reserved. 7 | // 8 | 9 | import XCTest 10 | @testable import QMCDecode 11 | 12 | class QMCDecodeTests: XCTestCase { 13 | 14 | override func setUp() { 15 | // Put setup code here. This method is called before the invocation of each test method in the class. 16 | } 17 | 18 | override func tearDown() { 19 | // Put teardown code here. This method is called after the invocation of each test method in the class. 20 | } 21 | 22 | func testExample() { 23 | // This is an example of a functional test case. 24 | // Use XCTAssert and related functions to verify your tests produce the correct results. 25 | } 26 | 27 | func testPerformanceExample() { 28 | // This is an example of a performance test case. 29 | self.measure { 30 | // Put the code you want to measure the time of here. 31 | } 32 | } 33 | 34 | } 35 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2019 程序猿老龚 gjh.me 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /QMCDecode/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIconFile 10 | 11 | CFBundleIdentifier 12 | $(PRODUCT_BUNDLE_IDENTIFIER) 13 | CFBundleInfoDictionaryVersion 14 | 6.0 15 | CFBundleName 16 | $(PRODUCT_NAME) 17 | CFBundlePackageType 18 | APPL 19 | CFBundleShortVersionString 20 | $(MARKETING_VERSION) 21 | CFBundleVersion 22 | $(CURRENT_PROJECT_VERSION) 23 | LSMinimumSystemVersion 24 | $(MACOSX_DEPLOYMENT_TARGET) 25 | NSHumanReadableCopyright 26 | Copyright © 2019 龚杰洪. All rights reserved. 27 | NSMainStoryboardFile 28 | Main 29 | NSPrincipalClass 30 | NSApplication 31 | 32 | 33 | -------------------------------------------------------------------------------- /QMCDecode/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "size" : "16x16", 5 | "idiom" : "mac", 6 | "filename" : "QMCDecode16.png", 7 | "scale" : "1x" 8 | }, 9 | { 10 | "size" : "16x16", 11 | "idiom" : "mac", 12 | "filename" : "QMCDecode32.png", 13 | "scale" : "2x" 14 | }, 15 | { 16 | "size" : "32x32", 17 | "idiom" : "mac", 18 | "filename" : "QMCDecode32-1.png", 19 | "scale" : "1x" 20 | }, 21 | { 22 | "size" : "32x32", 23 | "idiom" : "mac", 24 | "filename" : "QMCDecode64.png", 25 | "scale" : "2x" 26 | }, 27 | { 28 | "size" : "128x128", 29 | "idiom" : "mac", 30 | "filename" : "QMCDecode128.png", 31 | "scale" : "1x" 32 | }, 33 | { 34 | "size" : "128x128", 35 | "idiom" : "mac", 36 | "filename" : "QMCDecode256.png", 37 | "scale" : "2x" 38 | }, 39 | { 40 | "size" : "256x256", 41 | "idiom" : "mac", 42 | "filename" : "QMCDecode256-1.png", 43 | "scale" : "1x" 44 | }, 45 | { 46 | "size" : "256x256", 47 | "idiom" : "mac", 48 | "filename" : "QMCDecode512.png", 49 | "scale" : "2x" 50 | }, 51 | { 52 | "size" : "512x512", 53 | "idiom" : "mac", 54 | "filename" : "QMCDecode512-1.png", 55 | "scale" : "1x" 56 | }, 57 | { 58 | "size" : "512x512", 59 | "idiom" : "mac", 60 | "filename" : "QMCDecode1024.png", 61 | "scale" : "2x" 62 | } 63 | ], 64 | "info" : { 65 | "version" : 1, 66 | "author" : "xcode" 67 | } 68 | } -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Xcode 2 | # 3 | # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore 4 | 5 | ## Build generated 6 | build/ 7 | DerivedData/ 8 | 9 | ## Various settings 10 | *.pbxuser 11 | !default.pbxuser 12 | *.mode1v3 13 | !default.mode1v3 14 | *.mode2v3 15 | !default.mode2v3 16 | *.perspectivev3 17 | !default.perspectivev3 18 | xcuserdata/ 19 | 20 | ## Other 21 | *.moved-aside 22 | *.xccheckout 23 | *.xcscmblueprint 24 | 25 | ## Obj-C/Swift specific 26 | *.hmap 27 | *.ipa 28 | *.dSYM.zip 29 | *.dSYM 30 | 31 | ## Playgrounds 32 | timeline.xctimeline 33 | playground.xcworkspace 34 | 35 | # Swift Package Manager 36 | # 37 | # Add this line if you want to avoid checking in source code from Swift Package Manager dependencies. 38 | # Packages/ 39 | # Package.pins 40 | # Package.resolved 41 | .build/ 42 | 43 | # CocoaPods 44 | # 45 | # We recommend against adding the Pods directory to your .gitignore. However 46 | # you should judge for yourself, the pros and cons are mentioned at: 47 | # https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control 48 | # 49 | # Pods/ 50 | 51 | # Carthage 52 | # 53 | # Add this line if you want to avoid checking in source code from Carthage dependencies. 54 | # Carthage/Checkouts 55 | 56 | Carthage/Build 57 | 58 | # fastlane 59 | # 60 | # It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the 61 | # screenshots whenever they are needed. 62 | # For more information about the recommended setup visit: 63 | # https://docs.fastlane.tools/best-practices/source-control/#source-control 64 | 65 | fastlane/report.xml 66 | fastlane/Preview.html 67 | fastlane/screenshots/**/*.png 68 | fastlane/test_output 69 | -------------------------------------------------------------------------------- /QMCDecode/TeaCipher.swift: -------------------------------------------------------------------------------- 1 | // 2 | // TeaCipher.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2022/5/19. 6 | // Copyright © 2022 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Foundation 10 | 11 | enum TeaCipherError: Error { 12 | case keySizeInvalid 13 | case oddNumberOfRoundsSpecified 14 | } 15 | 16 | class TeaCipher { 17 | let blockSize = 8 18 | let keySize = 16 19 | let delta: UInt32 = 0x9e3779b9 20 | let numRounds = 64 21 | 22 | var key0: UInt32 23 | var key1: UInt32 24 | var key2: UInt32 25 | var key3: UInt32 26 | var rounds: UInt32 27 | 28 | /// 初始化 29 | /// - Parameters: 30 | /// - Key: 原始key 31 | /// - rounds: 轮数，默认64 32 | init(key: [UInt8], rounds: UInt32 = 64) throws { 33 | if key.count != 16 { 34 | throw TeaCipherError.keySizeInvalid 35 | } 36 | 37 | if (rounds & 1) != 0 { 38 | throw TeaCipherError.oddNumberOfRoundsSpecified 39 | } 40 | 41 | self.rounds = rounds 42 | 43 | 44 | self.key0 = key[0..<16].withUnsafeBytes({ 45 | $0.load(as: UInt32.self).bigEndian 46 | }) 47 | 48 | self.key1 = key[4..<16].withUnsafeBytes({ 49 | $0.load(as: UInt32.self).bigEndian 50 | }) 51 | 52 | self.key2 = key[8..<16].withUnsafeBytes({ 53 | $0.load(as: UInt32.self).bigEndian 54 | }) 55 | 56 | self.key3 = key[12..<16].withUnsafeBytes({ 57 | $0.load(as: UInt32.self).bigEndian 58 | }) 59 | } 60 | 61 | /// 加密数据 62 | /// - Parameter src: 原始数据 63 | /// - Returns: 加密后的数据 64 | func encrypt(src: [UInt8]) -> [UInt8] { 65 | var v0 = src[0..>5) &+ key1)) 78 | v1 = v1 &+ (((v0<<4) &+ key2) ^ (v0 &+ sum) ^ ((v0>>5) &+ key3)) 79 | } 80 | 81 | // 强行转换为大端数据后读取为byte数组 82 | v0 = CFSwapInt32HostToBig(v0) 83 | v1 = CFSwapInt32HostToBig(v1) 84 | 85 | var result = [UInt8]() 86 | let v0Data = Data(bytes: &v0, count: MemoryLayout.size(ofValue: v0)) 87 | result += [UInt8](v0Data) 88 | 89 | let v1Data = Data(bytes: &v1, count: MemoryLayout.size(ofValue: v1)) 90 | result += [UInt8](v1Data) 91 | return result 92 | } 93 | 94 | /// 解密数据 95 | /// - Parameter src: 需要解密的原始数据 96 | /// - Returns: 解密后的数据 97 | func decrypt(src: [UInt8]) -> [UInt8] { 98 | var v0 = src[0..>5) &+ key3)) 110 | v0 = v0 &- (((v1<<4) &+ key0) ^ (v1 &+ sum) ^ ((v1>>5) &+ key1)) 111 | sum = sum &- delta 112 | } 113 | 114 | // 强行转换为大端数据后读取为byte数组 115 | v0 = CFSwapInt32HostToBig(v0) 116 | v1 = CFSwapInt32HostToBig(v1) 117 | 118 | var result = [UInt8]() 119 | let v0Data = Data(bytes: &v0, count: MemoryLayout.size(ofValue: v0)) 120 | result += [UInt8](v0Data) 121 | 122 | let v1Data = Data(bytes: &v1, count: MemoryLayout.size(ofValue: v1)) 123 | result += [UInt8](v1Data) 124 | return result 125 | } 126 | } 127 | -------------------------------------------------------------------------------- /QMCDecode.xcodeproj/xcshareddata/xcschemes/QMCDecode.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 8 | 9 | 15 | 21 | 22 | 23 | 24 | 25 | 30 | 31 | 37 | 38 | 39 | 40 | 42 | 48 | 49 | 50 | 51 | 52 | 62 | 64 | 70 | 71 | 72 | 73 | 79 | 81 | 87 | 88 | 89 | 90 | 92 | 93 | 96 | 97 | 98 | -------------------------------------------------------------------------------- /QMCDecode/Constants.swift: -------------------------------------------------------------------------------- 1 | // 2 | // Constants.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2022/1/5. 6 | // Copyright © 2022 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Foundation 10 | 11 | struct ExtensionAndVersion { 12 | enum EncryptVersion { 13 | case v1 14 | case v2 15 | } 16 | var ext: String 17 | var version: EncryptVersion 18 | 19 | init(ext: String, version: ExtensionAndVersion.EncryptVersion) { 20 | self.ext = ext 21 | self.version = version 22 | } 23 | } 24 | 25 | let encryptExtDictionary: [String: ExtensionAndVersion] = [ 26 | "mgg": ExtensionAndVersion(ext: "ogg", version: ExtensionAndVersion.EncryptVersion.v2), 27 | "mgg1": ExtensionAndVersion(ext: "ogg", version: ExtensionAndVersion.EncryptVersion.v2), 28 | "mflac": ExtensionAndVersion(ext: "flac", version: ExtensionAndVersion.EncryptVersion.v2), 29 | "mflac0": ExtensionAndVersion(ext: "flac", version: ExtensionAndVersion.EncryptVersion.v2), 30 | 31 | "qmcflac": ExtensionAndVersion(ext: "flac", version: ExtensionAndVersion.EncryptVersion.v2), 32 | "qmcogg": ExtensionAndVersion(ext: "ogg", version: ExtensionAndVersion.EncryptVersion.v2), 33 | 34 | "qmc0": ExtensionAndVersion(ext: "mp3", version: ExtensionAndVersion.EncryptVersion.v1), 35 | "qmc2": ExtensionAndVersion(ext: "ogg", version: ExtensionAndVersion.EncryptVersion.v1), 36 | "qmc3": ExtensionAndVersion(ext: "mp3", version: ExtensionAndVersion.EncryptVersion.v1), 37 | "bkcmp3": ExtensionAndVersion(ext: "mp3", version: ExtensionAndVersion.EncryptVersion.v1), 38 | "bkcflac": ExtensionAndVersion(ext: "flac", version: ExtensionAndVersion.EncryptVersion.v1), 39 | "tkm": ExtensionAndVersion(ext: "m4a", version: ExtensionAndVersion.EncryptVersion.v1), 40 | "666c6163": ExtensionAndVersion(ext: "flac", version: ExtensionAndVersion.EncryptVersion.v1), 41 | "6d7033": ExtensionAndVersion(ext: "mp3", version: ExtensionAndVersion.EncryptVersion.v1), 42 | "6f6767": ExtensionAndVersion(ext: "ogg", version: ExtensionAndVersion.EncryptVersion.v1), 43 | "6d3461": ExtensionAndVersion(ext: "m4a", version: ExtensionAndVersion.EncryptVersion.v1), 44 | "776176": ExtensionAndVersion(ext: "wav", version: ExtensionAndVersion.EncryptVersion.v1), 45 | ] 46 | 47 | let privateKey256: [UInt8] = [ 48 | 0x77, 0x48, 0x32, 0x73, 0xDE, 0xF2, 0xC0, 0xC8, 49 | 0x95, 0xEC, 0x30, 0xB2, 0x51, 0xC3, 0xE1, 0xA0, 50 | 0x9E, 0xE6, 0x9D, 0xCF, 0xFA, 0x7F, 0x14, 0xD1, 51 | 0xCE, 0xB8, 0xDC, 0xC3, 0x4A, 0x67, 0x93, 0xD6, 52 | 53 | 0x28, 0xC2, 0x91, 0x70, 0xCA, 0x8D, 0xA2, 0xA4, 54 | 0xF0, 0x08, 0x61, 0x90, 0x7E, 0x6F, 0xA2, 0xE0, 55 | 0xEB, 0xAE, 0x3E, 0xB6, 0x67, 0xC7, 0x92, 0xF4, 56 | 0x91, 0xB5, 0xF6, 0x6C, 0x5E, 0x84, 0x40, 0xF7, 57 | 58 | 0xF3, 0x1B, 0x02, 0x7F, 0xD5, 0xAB, 0x41, 0x89, 59 | 0x28, 0xF4, 0x25, 0xCC, 0x52, 0x11, 0xAD, 0x43, 60 | 0x68, 0xA6, 0x41, 0x8B, 0x84, 0xB5, 0xFF, 0x2C, 61 | 0x92, 0x4A, 0x26, 0xD8, 0x47, 0x6A, 0x7C, 0x95, 62 | 63 | 0x61, 0xCC, 0xE6, 0xCB, 0xBB, 0x3F, 0x47, 0x58, 64 | 0x89, 0x75, 0xC3, 0x75, 0xA1, 0xD9, 0xAF, 0xCC, 65 | 0x08, 0x73, 0x17, 0xDC, 0xAA, 0x9A, 0xA2, 0x16, 66 | 0x41, 0xD8, 0xA2, 0x06, 0xC6, 0x8B, 0xFC, 0x66, 67 | 68 | 0x34, 0x9F, 0xCF, 0x18, 0x23, 0xA0, 0x0A, 0x74, 69 | 0xE7, 0x2B, 0x27, 0x70, 0x92, 0xE9, 0xAF, 0x37, 70 | 0xE6, 0x8C, 0xA7, 0xBC, 0x62, 0x65, 0x9C, 0xC2, 71 | 0x08, 0xC9, 0x88, 0xB3, 0xF3, 0x43, 0xAC, 0x74, 72 | 73 | 0x2C, 0x0F, 0xD4, 0xAF, 0xA1, 0xC3, 0x01, 0x64, 74 | 0x95, 0x4E, 0x48, 0x9F, 0xF4, 0x35, 0x78, 0x95, 75 | 0x7A, 0x39, 0xD6, 0x6A, 0xA0, 0x6D, 0x40, 0xE8, 76 | 0x4F, 0xA8, 0xEF, 0x11, 0x1D, 0xF3, 0x1B, 0x3F, 77 | 78 | 0x3F, 0x07, 0xDD, 0x6F, 0x5B, 0x19, 0x30, 0x19, 79 | 0xFB, 0xEF, 0x0E, 0x37, 0xF0, 0x0E, 0xCD, 0x16, 80 | 0x49, 0xFE, 0x53, 0x47, 0x13, 0x1A, 0xBD, 0xA4, 81 | 0xF1, 0x40, 0x19, 0x60, 0x0E, 0xED, 0x68, 0x09, 82 | 83 | 0x06, 0x5F, 0x4D, 0xCF, 0x3D, 0x1A, 0xFE, 0x20, 84 | 0x77, 0xE4, 0xD9, 0xDA, 0xF9, 0xA4, 0x2B, 0x76, 85 | 0x1C, 0x71, 0xDB, 0x00, 0xBC, 0xFD, 0x0C, 0x6C, 86 | 0xA5, 0x47, 0xF7, 0xF6, 0x00, 0x79, 0x4A, 0x11, 87 | ] 88 | -------------------------------------------------------------------------------- /QMCDecode/QMCKeyDecoder.swift: -------------------------------------------------------------------------------- 1 | // 2 | // QMCKeyDec.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2022/5/19. 6 | // Copyright © 2022 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Foundation 10 | 11 | enum QMCKeyDecoderError: Error { 12 | case inBufferSizeInvalidWithBlockSize 13 | case inBufferSizeToSmall 14 | case zeroCheckFailed 15 | case canNotConstructBase64Key 16 | case keyLengthTooShort 17 | case invalidPaddingLength 18 | } 19 | 20 | class QMCKeyDecoder { 21 | let saltLength = 2 22 | let zeroLength = 7 23 | 24 | /// 查找key 25 | /// - Parameter rawKey: 原始key 26 | /// - Returns: 计算后的key 27 | func deriveKey(_ rawKey: [UInt8]) throws -> [UInt8] { 28 | let base64Key = Data(bytes: rawKey, count: rawKey.count) 29 | guard let base64DecodedKey = Data(base64Encoded: base64Key) else { 30 | throw QMCKeyDecoderError.canNotConstructBase64Key 31 | } 32 | 33 | if base64DecodedKey.count < 16 { 34 | throw QMCKeyDecoderError.keyLengthTooShort 35 | } 36 | 37 | let simpleKey = simpleMakeKey(seed: 106, length: 8) 38 | var teaKey = [UInt8](repeating: 0, count: 16) 39 | for index in 0..<8 { 40 | teaKey[index << 1] = simpleKey[index] 41 | teaKey[(index << 1) + 1] = base64DecodedKey[index] 42 | } 43 | 44 | let inBuffer = [UInt8](base64DecodedKey[8.. [UInt8] { 58 | var result = [UInt8](repeating: 0, count: length) 59 | for index in 0.. [UInt8] { 71 | if inBuffer.count % 8 != 0 { 72 | throw QMCKeyDecoderError.inBufferSizeInvalidWithBlockSize 73 | } 74 | 75 | if inBuffer.count < 16 { 76 | throw QMCKeyDecoderError.inBufferSizeToSmall 77 | } 78 | 79 | let teaCipher = try TeaCipher(key: key, rounds: 32) 80 | 81 | var tempBuffer = teaCipher.decrypt(src: inBuffer) 82 | 83 | let paddingLength = Int(tempBuffer[0] & 0x7) 84 | let outputLength = inBuffer.count - 1 - paddingLength - saltLength - zeroLength 85 | 86 | if paddingLength + saltLength != 8 { 87 | throw QMCKeyDecoderError.invalidPaddingLength 88 | } 89 | 90 | var outputBuffer = [UInt8](repeating: 0, count: outputLength) 91 | 92 | var ivPrevious = [UInt8](repeating: 0, count: 8) 93 | var ivCruuent = [UInt8](inBuffer[0...7]) 94 | var inBufferPosition = 8 95 | 96 | var tempIndex = 1 + paddingLength 97 | 98 | // CBC IV 99 | func cryptBlock() { 100 | ivPrevious = ivCruuent 101 | ivCruuent = [UInt8](inBuffer[inBufferPosition...inBufferPosition+7]) 102 | for j in 0..<8 { 103 | tempBuffer[j] ^= ivCruuent[j] 104 | } 105 | 106 | tempBuffer = teaCipher.decrypt(src: tempBuffer) 107 | inBufferPosition += 8 108 | tempIndex = 0 109 | } 110 | 111 | // 不处理salt 112 | var saltIndex = 1 113 | while saltIndex <= saltLength { 114 | if tempIndex < 8 { 115 | tempIndex += 1 116 | saltIndex += 1 117 | } else { 118 | cryptBlock() 119 | } 120 | } 121 | 122 | // 解密为原文 123 | var outputBufferPosition = 0 124 | 125 | while outputBufferPosition < outputLength { 126 | if tempIndex < 8 { 127 | outputBuffer[outputBufferPosition] = tempBuffer[tempIndex] ^ ivPrevious[tempIndex] 128 | outputBufferPosition += 1 129 | tempIndex += 1 130 | } else { 131 | cryptBlock() 132 | } 133 | } 134 | 135 | // 验证应为0的位置是否为0 136 | for _ in 1...zeroLength { 137 | if tempBuffer[tempIndex] != ivPrevious[tempIndex] { 138 | throw QMCKeyDecoderError.zeroCheckFailed 139 | } 140 | } 141 | return outputBuffer 142 | } 143 | } 144 | -------------------------------------------------------------------------------- /QMCDecode/QMDecoder.swift: -------------------------------------------------------------------------------- 1 | // 2 | // QMCDecoder.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2022/1/10. 6 | // Copyright © 2022 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Foundation 10 | 11 | class QMDecoder { 12 | enum DecoderError: Error { 13 | case unsupportFileExtension(ext: String) 14 | case canNotReadFile 15 | case canNotReadFileByStream 16 | case canNotGetFileLength 17 | case canNotReadSizeBuffer 18 | case canNotReadRawKeyBuffer 19 | case searchRawKeyFailed 20 | } 21 | 22 | private let commaASCIICode: UInt8 = Character(",").asciiValue ?? 44 23 | 24 | 25 | private let originFilePath: String 26 | private let outputDirectory: String 27 | private let readStream: InputStream 28 | private let originFileLength: Int 29 | 30 | private var realAudioSize: Int = 0 31 | 32 | private var cipher: QMCipher? 33 | 34 | init(originFilePath: String, outputDirectory: String) throws { 35 | self.originFilePath = originFilePath 36 | self.outputDirectory = outputDirectory 37 | guard let fileStream = InputStream(fileAtPath: originFilePath) else { 38 | throw DecoderError.canNotReadFileByStream 39 | } 40 | self.readStream = fileStream 41 | 42 | let fileAttributes = try FileManager.default.attributesOfItem(atPath: originFilePath) 43 | guard let fileLength = fileAttributes[FileAttributeKey.size] as? Int else { 44 | throw DecoderError.canNotGetFileLength 45 | } 46 | self.originFileLength = fileLength 47 | 48 | try searchKey() 49 | } 50 | 51 | func decryptAndWriteToFile() throws { 52 | let fileURL = URL(fileURLWithPath: originFilePath) 53 | let fileExtension = fileURL.pathExtension 54 | if fileExtension.count > 0, let extAndVersion = encryptExtDictionary[fileExtension], let cipher = self.cipher { 55 | let fileHandle = FileHandle(forReadingAtPath: originFilePath) 56 | if let fileData = try fileHandle?.read(upToCount: self.realAudioSize) { 57 | let decodeData = cipher.qmDecrypt(data: fileData, offset: 0) 58 | var outputURL = URL(fileURLWithPath: self.outputDirectory) 59 | outputURL.appendPathComponent(fileURL.lastPathComponent) 60 | outputURL.deletePathExtension() 61 | outputURL.appendPathExtension(extAndVersion.ext) 62 | try decodeData.write(to: outputURL, options: Data.WritingOptions.atomic) 63 | } else { 64 | throw DecoderError.canNotReadFile 65 | } 66 | } else { 67 | throw DecoderError.unsupportFileExtension(ext: fileExtension) 68 | } 69 | } 70 | 71 | func matchingDecoder(_ extAndVersion: ExtensionAndVersion) throws { 72 | if extAndVersion.version == .v2 { 73 | 74 | } else { 75 | 76 | } 77 | } 78 | 79 | func searchKey() throws { 80 | guard let fileHandle = FileHandle(forReadingAtPath: originFilePath) else { 81 | throw DecoderError.canNotReadFile 82 | } 83 | defer { 84 | try? fileHandle.close() 85 | } 86 | 87 | try fileHandle.seek(toOffset: UInt64(self.originFileLength - 4)) 88 | guard let lastFourBytes = try fileHandle.readToEnd() else { 89 | throw DecoderError.canNotReadFile 90 | } 91 | 92 | // 移动端下载的用,以QTag结尾 93 | if String(bytes: lastFourBytes, encoding: String.Encoding.utf8) == "QTag" { 94 | // 读取key长度 95 | try fileHandle.seek(toOffset: UInt64(self.originFileLength - 8)) 96 | guard let sizeBuffer = try fileHandle.read(upToCount: 4) else { 97 | throw DecoderError.canNotReadFile 98 | } 99 | let keySize = sizeBuffer.withUnsafeBytes { 100 | $0.load(as: UInt32.self).bigEndian 101 | } 102 | 103 | // 计算真实音频长度 104 | self.realAudioSize = self.originFileLength - Int(keySize) - 8 105 | 106 | // 读取原始key 107 | try fileHandle.seek(toOffset: UInt64(self.realAudioSize)) 108 | guard let rawKey = try fileHandle.read(upToCount: Int(keySize)) else { 109 | throw DecoderError.canNotReadRawKeyBuffer 110 | } 111 | 112 | // 通过逗号找到key结束位置 113 | guard let keyEndIndex = rawKey.firstIndex(of: commaASCIICode) else { 114 | throw DecoderError.searchRawKeyFailed 115 | } 116 | 117 | // 通过原始key和key结束位置组装解码器 118 | try setCipher(keyBuffer: [UInt8]([UInt8](rawKey)[0.. 300 { 147 | self.cipher = try QMRC4Cipher(originKey: decodedKey) 148 | } else { 149 | self.cipher = try QMMapCipher(originKey: decodedKey) 150 | } 151 | } 152 | } 153 | -------------------------------------------------------------------------------- /QMCDecode/QMCipher.swift: -------------------------------------------------------------------------------- 1 | // 2 | // QMCDecoder.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2019/8/26. 6 | // Copyright © 2019 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Foundation 10 | 11 | /// 解码器协议，通过原始数据和偏移量进行解密 12 | public protocol QMCipher { 13 | func qmDecrypt(data: Data, offset: Int) -> Data 14 | init(originKey: [UInt8]) throws 15 | } 16 | 17 | public enum QMCipherError: Error { 18 | case invalidKeyLength 19 | } 20 | 21 | /// QMStaticCipher 固定key解码器 22 | public class QMStaticCipher: QMCipher { 23 | var key: [UInt8] 24 | var keyLength: Int 25 | 26 | required public init(originKey: [UInt8]) throws { 27 | if originKey.count == 0 { 28 | throw QMCipherError.invalidKeyLength 29 | } 30 | self.key = originKey 31 | self.keyLength = key.count 32 | } 33 | 34 | public func qmDecrypt(data: Data, offset: Int) -> Data { 35 | var resultArray = [UInt8](repeating: 0, count: data.count) 36 | for (index, byte) in data.enumerated() { 37 | resultArray[index] = byte ^ getMask(offset: offset + index) 38 | } 39 | return Data(resultArray) 40 | } 41 | 42 | public func getMask(offset: Int) -> UInt8 { 43 | let temp = offset > 0x7FFF ? (offset % 0x7FFF) : offset 44 | let index = (temp * temp + 27) & 0xFF 45 | return key[index] 46 | } 47 | } 48 | 49 | /// QMMapCipher 翻转解码 50 | public class QMMapCipher: QMCipher { 51 | var key: [UInt8] 52 | var keyLength: Int 53 | 54 | required public init(originKey: [UInt8]) throws { 55 | if originKey.count == 0 { 56 | throw QMCipherError.invalidKeyLength 57 | } 58 | self.key = originKey 59 | self.keyLength = key.count 60 | } 61 | 62 | public func qmDecrypt(data: Data, offset: Int) -> Data { 63 | var resultArray = [UInt8](repeating: 0, count: data.count) 64 | for (index, byte) in data.enumerated() { 65 | resultArray[index] = byte ^ getMask(offset: offset + index) 66 | } 67 | return Data(resultArray) 68 | } 69 | 70 | public func getMask(offset: Int) -> UInt8 { 71 | let temp = offset > 0x7FFF ? (offset % 0x7FFF) : offset 72 | let index = (temp * temp + 71_214) & 0xFF 73 | return rotate(value: key[index], bits: index & 0x7) 74 | } 75 | 76 | func rotate(value: UInt8, bits: Int) -> UInt8 { 77 | let rotate = (bits + 4) % 8 78 | let left = value << rotate 79 | let right = value >> rotate 80 | return (left | right) & 0xff 81 | } 82 | } 83 | 84 | public class QMRC4Cipher: QMCipher { 85 | private let firstSegmentSize: Int = 0x80 // 128 86 | private let segmentSize: Int = 0x1_400 //5_120 87 | 88 | let originKey: [UInt8] 89 | let originKeyLength: Int 90 | let seedBox: [UInt8] 91 | var hashValue: UInt32 92 | 93 | required public init(originKey: [UInt8]) throws { 94 | if originKey.count == 0 { 95 | throw QMCipherError.invalidKeyLength 96 | } 97 | 98 | self.originKey = originKey 99 | 100 | let keyLength = originKey.count 101 | self.originKeyLength = keyLength 102 | 103 | var seedBox: [UInt8] = [UInt8](repeating: 0, count: keyLength) 104 | for index in 0.. Int { 133 | let seed = self.originKey[index % self.originKeyLength] 134 | let resultValue = Int(floor(((Double(self.hashValue) / (Double(index + 1) * Double(seed))) * 100))) 135 | return resultValue % self.originKeyLength 136 | } 137 | 138 | public func qmDecrypt(data: Data, offset: Int) -> Data { 139 | let size = data.count 140 | var toProcess = size 141 | var processed = 0 142 | var newOffset = offset 143 | 144 | @discardableResult 145 | func postProcessed(length: Int) -> Bool { 146 | toProcess -= length 147 | processed += length 148 | newOffset += length 149 | return toProcess == 0 150 | } 151 | 152 | // 初始片段 153 | var resultArray = [UInt8](data) 154 | if newOffset < firstSegmentSize { 155 | let processLength = min(size, firstSegmentSize - newOffset) 156 | var tempBuffer = [UInt8](resultArray[0.. segmentSize { 177 | var tempBuffer = [UInt8](resultArray[processed.. 0 { 185 | var tempBuffer = [UInt8](resultArray[processed..= 0 { 213 | let seedValue = Int(newSeedBox[left]) + Int(newSeedBox[right]) 214 | data[index] ^= newSeedBox[seedValue % self.originKeyLength] 215 | } 216 | } 217 | } 218 | } 219 | -------------------------------------------------------------------------------- /QMCDecode/ViewController.swift: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.swift 3 | // QMCDecode 4 | // 5 | // Created by 龚杰洪 on 2019/8/26. 6 | // Copyright © 2019 龚杰洪. All rights reserved. 7 | // 8 | 9 | import Cocoa 10 | 11 | enum QMCDecodeError: Error { 12 | case inputFileIsInvalid 13 | case outputDirectoryIsInvalid 14 | case decodeFailed 15 | case readFileToStreamFailed 16 | case outputFileStreamInvalid 17 | case notError 18 | } 19 | 20 | class ViewController: NSViewController { 21 | @IBOutlet weak var openFolderButton: NSButton! 22 | @IBOutlet weak var inputFilesTable: NSTableView! 23 | @IBOutlet weak var outputPathButton: NSButton! 24 | @IBOutlet weak var ouputPathLabel: NSTextField! 25 | @IBOutlet weak var currentFolderLabel: NSTextField! 26 | 27 | @IBOutlet weak var startButton: NSButton! 28 | @IBOutlet weak var progressView: NSProgressIndicator! 29 | 30 | lazy var outputFolderURL: URL = { 31 | let path = NSHomeDirectory() + "/Music/QMCConvertOutput/" 32 | let url = URL(fileURLWithPath: path) 33 | do { 34 | let filemanager = FileManager.default 35 | var isDirectory = ObjCBool(false) 36 | let fileExists = filemanager.fileExists(atPath: path, isDirectory: &isDirectory) 37 | if fileExists { 38 | if isDirectory.boolValue { 39 | // do nothing 40 | } else { 41 | try filemanager.createDirectory(at: url, withIntermediateDirectories: true, attributes: nil) 42 | } 43 | } else { 44 | try filemanager.createDirectory(at: url, withIntermediateDirectories: true, attributes: nil) 45 | } 46 | } catch { 47 | print(error) 48 | } 49 | return url 50 | }() 51 | 52 | var dataSource: [URL] = [] 53 | 54 | override func viewDidLoad() { 55 | super.viewDidLoad() 56 | 57 | openFolderButton.target = self 58 | openFolderButton.action = #selector(openInputFolder(_:)) 59 | 60 | outputPathButton.target = self 61 | outputPathButton.action = #selector(openOutputFolder(_:)) 62 | 63 | startButton.target = self 64 | startButton.action = #selector(startConvert(_:)) 65 | 66 | setupTableView() 67 | 68 | loadDefaultPath() 69 | 70 | ouputPathLabel.stringValue = outputFolderURL.path 71 | } 72 | 73 | func loadDefaultPath() { 74 | var path = NSHomeDirectory() 75 | path += "/Library/Containers/com.tencent.QQMusicMac/Data/Library/Application Support/QQMusicMac/iQmc/" 76 | let fileManager = FileManager.default 77 | do { 78 | let filesPaths = try fileManager.contentsOfDirectory(atPath: path) 79 | for filePath in filesPaths { 80 | if encryptExtDictionary.keys.contains(URL(fileURLWithPath: filePath).pathExtension) { 81 | let url = URL(fileURLWithPath: path + filePath) 82 | dataSource.append(url) 83 | } 84 | } 85 | } catch { 86 | print(error) 87 | } 88 | 89 | self.currentFolderLabel.stringValue = path 90 | 91 | self.inputFilesTable.reloadData() 92 | } 93 | 94 | func setupTableView() { 95 | inputFilesTable.dataSource = self 96 | inputFilesTable.delegate = self 97 | } 98 | 99 | override var representedObject: Any? { 100 | didSet { 101 | 102 | } 103 | } 104 | 105 | @objc func openInputFolder(_ sender: Any) { 106 | dataSource.removeAll() 107 | inputFilesTable.reloadData() 108 | 109 | let panel = NSOpenPanel() 110 | panel.canChooseFiles = true 111 | panel.canChooseDirectories = true 112 | panel.allowsMultipleSelection = true 113 | 114 | let finded = panel.runModal() 115 | 116 | if finded == .OK { 117 | var directoryArray = [String]() 118 | for url in panel.urls { 119 | var isDirectory: ObjCBool = ObjCBool(false) 120 | FileManager.default.fileExists(atPath: url.path, isDirectory: &isDirectory) 121 | if isDirectory.boolValue == true { 122 | do { 123 | let filesPaths = try FileManager.default.contentsOfDirectory(atPath: url.path) 124 | for filePath in filesPaths { 125 | if encryptExtDictionary.keys.contains(URL(fileURLWithPath: filePath).pathExtension) { 126 | let fileURL = url.appendingPathComponent(filePath) 127 | dataSource.append(fileURL) 128 | } 129 | } 130 | } catch { 131 | print(error) 132 | } 133 | directoryArray.append(url.path) 134 | } else { 135 | if encryptExtDictionary.keys.contains(url.pathExtension.lowercased()) { 136 | dataSource.append(url) 137 | } 138 | } 139 | } 140 | self.currentFolderLabel.stringValue = directoryArray.joined(separator: "\n") 141 | inputFilesTable.reloadData() 142 | } else { 143 | inputFilesTable.reloadData() 144 | } 145 | } 146 | 147 | @objc func openOutputFolder(_ sender: Any) { 148 | let panel = NSOpenPanel() 149 | panel.canChooseFiles = false 150 | panel.canChooseDirectories = true 151 | panel.allowsMultipleSelection = false 152 | panel.canCreateDirectories = true 153 | 154 | 155 | let finded = panel.runModal() 156 | 157 | if finded == .OK { 158 | for url in panel.urls { 159 | self.outputFolderURL = url 160 | self.ouputPathLabel.stringValue = url.path 161 | break 162 | } 163 | } else { 164 | } 165 | } 166 | 167 | @objc func startConvert(_ sender: Any) { 168 | if dataSource.count == 0 { 169 | let alert = NSAlert(error: QMCDecodeError.inputFileIsInvalid) 170 | alert.messageText = "没有可供转换的数据" 171 | alert.icon = NSImage(named: NSImage.Name()) 172 | alert.beginSheetModal(for: self.view.window!, completionHandler: { (response) in 173 | 174 | }) 175 | } 176 | 177 | self.startButton.isEnabled = false 178 | 179 | errorCount = 0 180 | 181 | succeedCount = 0 182 | 183 | let coreCount = ProcessInfo().processorCount 184 | 185 | for index in 0.. 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