Paper 2019/318
Improved quantum attack on Type-1 Generalized Feistel Schemes and Its application to CAST-256
Boyu Ni and Xiaoyang Dong
Abstract
Generalized Feistel Schemes (GFS) are important components of symmetric ciphers, which have been extensively researched in classical setting. However, the security evaluations of GFS in quantum setting are rather scanty.
In this paper, we give more improved polynomial-time quantum distinguishers on Type-1 GFS in quantum
chosen-plaintext attack (qCPA) setting and quantum chosen-ciphertext attack (qCCA) setting.
In qCPA setting, we give new quantum polynomial-time distinguishers on
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Generalized Feistel SchemeQuantum attackSimon's algorithmCAST-256
- Contact author(s)
-
xiaoyangdong @ tsinghua edu cn
375828077 @ qq com - History
- 2019-03-29: received
- Short URL
- https://ia.cr/2019/318
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2019/318, author = {Boyu Ni and Xiaoyang Dong}, title = {Improved quantum attack on Type-1 Generalized Feistel Schemes and Its application to {CAST}-256}, howpublished = {Cryptology {ePrint} Archive, Paper 2019/318}, year = {2019}, url = {https://eprint.iacr.org/2019/318} }