The „Duplex Mode” is an increasingly popular construction used in modern symmetric cryptography algorithms. One example is the authenticated encryption mode of the recent ASCON standard for Lightweight Cryptography (https://www.nist.gov/news-events/news/2023/02/nistselects-lightweight-cryptography-algorithms-protectsmall-devices).
The project idea is to consider new variants of the Duplex mode, which, if secure, could provide some practical benefits. Students shall challenge the security of those variants, both discovering attacks, if possible, and by searching for ideas for security proofs.
This project resembles the everyday activities of a researcher in the field and offers a good introduction into proper scientific work. Depending on the results, the objective for the students is to share their findings in form of a research paper which will be submitted to an international conference. If the paper is accepted, we can fund a student to travel to the conference and to present the paper.
This project pairs well with the Seminar „Current Topics in Cryptography: Authenticated Encryption” or with the lecture „Secure Channels”.
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