Paper 2016/697
Ciphertext Forgery on HANUMAN
Damian Vizár
Abstract
HANUMAN is a mode of operation of a keyless cryptographic permutation for nonce-based authenticated encryption with associated data, included among the modes bundled in the PRIMATEs candidate in the currently ongoing CAESAR competition. HANUMAN is a sponge-like mode whose design and security argument are inspired by the SpongeWrap construction. We identify a flaw in the domain separation of HANUMAN, and show how to exploit it to efficiently produce ciphertext forgeries.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Authenticated encryptionPRIMATEsciphertext forgeryCAESAR competition
- Contact author(s)
- damian vizar @ epfl ch
- History
- 2016-07-13: received
- Short URL
- https://ia.cr/2016/697
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2016/697,
author = {Damian Vizár},
title = {Ciphertext Forgery on {HANUMAN}},
howpublished = {Cryptology {ePrint} Archive, Paper 2016/697},
year = {2016},
url = {https://eprint.iacr.org/2016/697}
}
