diff options
| -rw-r--r-- | rsa/pkcs1.py | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/rsa/pkcs1.py b/rsa/pkcs1.py index 8a85b1c..d0149a1 100644 --- a/rsa/pkcs1.py +++ b/rsa/pkcs1.py @@ -258,10 +258,8 @@ def decrypt(crypto: bytes, priv_key: key.PrivateKey) -> bytes: cleartext_marker_bad = not compare_digest(cleartext[:2], b'\x00\x02') # Find the 00 separator between the padding and the message - try: - sep_idx = cleartext.index(b'\x00', 2) - except ValueError: - sep_idx = -1 + sep_idx = cleartext.find(b'\x00', 2) + # sep_idx indicates the position of the `\x00` separator that separates the # padding from the actual message. The padding should be at least 8 bytes # long (see https://tools.ietf.org/html/rfc8017#section-7.2.2 step 3), which |