1 files changed, 8 insertions, 3 deletions
diff --git a/modules/ext/cryptogzip.js b/modules/ext/cryptogzip.js
index 25b6ca4..0bd4e71 100644
--- a/modules/ext/cryptogzip.js
+++ b/modules/ext/cryptogzip.js
@@ -137,11 +137,16 @@ class CryptoGzipModule {
         }
 
         try {
-            const compressed = this._vfsRead(path);
-            const content = await this._gunzipString(compressed);
+            // Binary-safe: a .gz written by `wget` lives in the VFS as raw Latin-1 bytes, and a .gz
+            // written by this module's own `gzip` lives there as base64 — _vfsReadBytes handles both.
+            // Going through _gunzipString (base64-only) made a real gzip file report
+            // "not valid base64 input (…)" instead of "not a gzip file".
+            const raw = this._vfsReadBytes(path);
+            if (!this._isGzip(raw)) throw new Error('not a gzip file');
+            const content = new TextDecoder().decode(await this._gunzipBytes(raw));
             this._vfsWrite(outPath, content);
             this._vfsDelete(path);
-            this.terminal.print(`gunzipped: ${path} → ${outPath} (${compressed.length} → ${content.length} chars)`, 'success');
+            this.terminal.print(`gunzipped: ${path} → ${outPath} (${raw.length} → ${content.length} chars)`, 'success');
         } catch (e) {
             this.terminal.print('gunzip error: ' + e.message, 'error');
         }