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| author | sepro <sepro@sepr0.com> | 2024-11-03 21:03:09 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-11-03 21:03:09 +0100 |
| commit | beae2db127d3b5017cbcf685da9de7a9ef496541 (patch) | |
| tree | 0add778bdf350c240dafb614901b223e75a58851 /yt_dlp/aes.py | |
| parent | 3945677a75e94a1fecc085432d791e1c21220cd3 (diff) | |
[aes] Fix GCM pad length calculation (#11438)
Closes #10169
Authored by: seproDev
Diffstat (limited to 'yt_dlp/aes.py')
| -rw-r--r-- | yt_dlp/aes.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/yt_dlp/aes.py b/yt_dlp/aes.py index abf54a998..be67b40fe 100644 --- a/yt_dlp/aes.py +++ b/yt_dlp/aes.py @@ -230,11 +230,11 @@ def aes_gcm_decrypt_and_verify(data, key, tag, nonce): iv_ctr = inc(j0) decrypted_data = aes_ctr_decrypt(data, key, iv_ctr + [0] * (BLOCK_SIZE_BYTES - len(iv_ctr))) - pad_len = len(data) // 16 * 16 + pad_len = (BLOCK_SIZE_BYTES - (len(data) % BLOCK_SIZE_BYTES)) % BLOCK_SIZE_BYTES s_tag = ghash( hash_subkey, data - + [0] * (BLOCK_SIZE_BYTES - len(data) + pad_len) # pad + + [0] * pad_len # pad + bytes_to_intlist((0 * 8).to_bytes(8, 'big') # length of associated data + ((len(data) * 8).to_bytes(8, 'big'))), # length of data ) |