Paper 2021/1439
An Addendum to the ZUC-256 Stream Cipher
ZUC Design Team
Abstract
ZUC-256 is a stream cipher, together with AES-256 and SNOW-V, proposed as the core primitive in future set of 3GPP confidentiality and integrity algorithms for the upcoming 5G applications which offer the 256-bit security. \\ While the original initialization scheme of ZUC-256 can work with a 256-bit key and an IV of length up to 184 bits, we describe a new initialization scheme of ZUC-256 that supports an IV of the exact 128 bits in this paper. Compared to the original initialization scheme, this new key/IV setup algorithm avoids the division of the whole key/IV byte and provides a simple and natural-looking initialization scheme for ZUC-256.
Note: This paper describes a new initialization scheme of ZUC-256 with 128-bit IV and its security analysis done by the ZUC design team.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint.
- Keywords
- 5GStream ciphersZUC256-bit security.
- Contact author(s)
- martin_zhangbin @ hotmail com
- History
- 2021-10-27: received
- Short URL
- https://ia.cr/2021/1439
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/1439,
author = {ZUC Design Team},
title = {An Addendum to the {ZUC}-256 Stream Cipher},
howpublished = {Cryptology {ePrint} Archive, Paper 2021/1439},
year = {2021},
url = {https://eprint.iacr.org/2021/1439}
}
