Index: pdfrw-0.4/pdfrw/crypt.py
--- pdfrw-0.4/pdfrw/crypt.py.orig	2017-09-14 15:27:27.000000000 +0200
+++ pdfrw-0.4/pdfrw/crypt.py	2024-06-22 17:13:55.697058000 +0200
@@ -7,11 +7,7 @@
 import hashlib
 import struct
 
-try:
-    from Crypto.Cipher import ARC4, AES
-    HAS_CRYPTO = True
-except ImportError:
-    HAS_CRYPTO = False
+HAS_CRYPTO = False
 
 from .objects import PdfDict, PdfName