[fragments] Pad fragments before decrypting (#1298)

Closes #197, #1297, #1007 Authored by: shirt-dev
3 years ago · 373475f035
parent 920134b2e5
commit 373475f035
1 changed files with 2 additions and 1 deletions
--- a/yt_dlp/downloader/fragment.py
+++ b/yt_dlp/downloader/fragment.py
@ -355,7 +355,8 @@ class FragmentFD(FileDownloader):
            # not what it decrypts to.
            if self.params.get('test', False):
                return frag_content
-            decrypted_data = aes_cbc_decrypt_bytes(frag_content, decrypt_info['KEY'], iv)
+            padding_len = 16 - (len(frag_content) % 16)
+            decrypted_data = aes_cbc_decrypt_bytes(frag_content + bytes([padding_len] * padding_len), decrypt_info['KEY'], iv)
            return decrypted_data[:-decrypted_data[-1]]

        return decrypt_fragment