Recover a password

The paper id is of the form year/id, but year can be 'xxxx'. Examples include 2021/023 or xxxx/4545.
An answer is required for the challenge "How many bits are in DES keys?".

The password for this paper will be sent to all emails associated with the paper.

Note: In order to protect the privacy of readers, eprint.iacr.org does not use cookies or embedded third party content.