rosbag and cryptodome

[flabrosse]

Currently making packages for gentoo. On this distribution, pycryptodome is used, but this creates cryto packages in the site-packages structure. This means that bag.py needs to be patched with something like:

diff --git a/tools/rosbag/src/rosbag/bag.py b/tools/rosbag/src/rosbag/bag.py
index 24c3e054e..dc61b125f 100644
--- a/tools/rosbag/src/rosbag/bag.py
+++ b/tools/rosbag/src/rosbag/bag.py
@@ -50,8 +50,8 @@ import threading
 import time
 import yaml

-from Cryptodome.Cipher import AES
-from Cryptodome.Random import get_random_bytes
+from Crypto.Cipher import AES
+from Crypto.Random import get_random_bytes

 import gnupg

I can submit a PR but I am not sure how specific to gentoo this is.

[jinmenglei]

How about this

try:
    from Cryptodome.Cipher import AES
except ImportError:
    rospy.logwarn(
        'Failed to load Python extension for Cryptodome.Cipher support. '
        'Crypto.Cipher will be available.')
    from Crypto.Cipher import AES

[JiaoxianDu]

pip install pycryptodomex