Name
Abstract | ||
|---|---|---|
Kupyna was approved as the new Ukrainian hash standard in 2015. In this paper, we show several pseudo-preimage attacks and collision attacks on Kupyna. Due to the wide-pipe design, it is hard to construct pseudo-preimage attacks on Kupyna. Combining the meet-in-the-middle attack with the guess-and-determine technique, we propose some pseudo-preimage attacks on the compression function for 5-round Kupyna-256 and 7-round Kupyna-512. The complexities of these two pseudo-preimage attacks are 2(229.5) (for 5-round Kupyna-256) and 2(499) (for 7-round Kupyna-512) respectively. Regarding the collision attack, we can not only construct a collision attack on the 7-round Kupyna-512 compression function with a complexity of 2(159.3) but also construct a collision attack on the 5-round Kupyna-512 hash function with a complexity of 2(240). |
Year | DOI | Venue |
|---|---|---|
2018 | 10.6688/JISE.2018.34.3.10 | JOURNAL OF INFORMATION SCIENCE AND ENGINEERING |
Keywords | Field | DocType |
Kupyna,pseudo-preimage,collision,rebound attack,meet-in-the-middle | Computer science,Parallel computing,Computer network,Cryptanalysis | Journal |
Volume | Issue | ISSN |
34 | 3 | 1016-2364 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
2 | ||