Symmetric Design
summary
Three short, concrete results: a new small‑state AEAD called FAN claims FAN: 192‑bit state, 128‑bit key, 64‑bit IV, 52‑round init, uses a byte‑wise S‑box and spindle/blade structure, reports 2,327 GE hardware and 9.6 GB/s and asserts it resists known stream‑cipher attacks. A proof paper gives related‑key CCA bounds for generalized Feistel networks, claiming EFN/AFN: 4 rounds RKA‑CCA for AFN; ceil(2m/n)+O(1) for EFN using the H‑coefficient method. A KDM analysis for key‑alternating Feistel shows 4‑round KAF is secure only under KAF: claw‑free + offset‑free KDM sets, identifies sliding attacks, and leaves higher‑round conjectures.
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chapters (13)
- 0:00Introduction
- 0:19Review
- 7:51Security Evaluation
- 9:40Background
- 12:22Contributions
- 13:48Security
- 17:42Conclusion
- 19:15KDM
- 21:44KDM adversary
- 23:36KDM security
- 25:16Offset freeness
- 26:37Proof technique
- 28:51Summary
