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Paper 2014/226
Weak-Key Analysis of POET
Mohamed Ahmed Abdelraheem and Andrey Bogdanov and Elmar Tischhauser
Abstract
We evaluate the security of the recently proposed authenticated encryption scheme POET with regard to weak keys when its universal hash functions are instantiated with finite field multiplications. We give explicit constructions for weak key classes not covered by POET's weak key testing strategy, and demonstrate how to leverage them to obtain universal forgeries.
Note: Editorial updates.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- CAESARPOETAuthenticated EncryptionPolynomial hashingForgery polynomialsWeak keys
- Contact author(s)
- mohab @ dtu dk
- History
- 2014-04-09: revised
- 2014-03-29: received
- See all versions
- Short URL
- https://ia.cr/2014/226
- License
-
CC BY
