fix: support files that were not encrypted (e.g. kgma), close #36

src/decrypt-worker/crypto/transparent/transparent.ts

@@ -0,0 +1,14 @@
+import type { CryptoBase } from '../CryptoBase';
+
+export class TransparentCrypto implements CryptoBase {
+  cryptoName = 'Transparent';
+  checkByDecryptHeader = true;
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    return new Blob([buffer]);
+  }
+
+  public static make() {
+    return new TransparentCrypto();
+  }
+}