feat: add support for migu3d formats

src/decrypt-worker/crypto/CryptoFactory.ts

@@ -7,6 +7,7 @@ import { KGMCrypto } from './kgm/kgm_pc';
 import { NCMCrypto } from './ncm/ncm_pc';
 import { XimalayaAndroidCrypto } from './xmly/xmly_android';
 import { KWMCrypto } from './kwm/kwm';
+import { MiguCrypto } from './migu/migu3d_keyless';
 
 export const allCryptoFactories: CryptoFactory[] = [
   // Xiami (*.xm)
@@ -24,6 +25,9 @@ export const allCryptoFactories: CryptoFactory[] = [
   // KWMv1 (*.kwm)
   KWMCrypto.make,
 
+  // Migu3D/Keyless (*.wav; *.m4a)
+  MiguCrypto.make,
+
   // Crypto that does not implement "checkBySignature" or need to decrypt the entire file and then check audio type,
   //   should be moved to the bottom of the list for performance reasons.
 

src/decrypt-worker/crypto/migu/migu3d_keyless.ts

@@ -0,0 +1,15 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase';
+
+export class MiguCrypto implements CryptoBase {
+  cryptoName = 'Migu3D/Keyless';
+  checkByDecryptHeader = true;
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    return transformBlob(buffer, (p) => p.make.Migu3D());
+  }
+
+  public static make() {
+    return new MiguCrypto();
+  }
+}