Abstract
DDP-64, based on various controlled operations, is a 64-bit Feistel-like block cipher consisting of 10 rounds with a 128-bit key. It was designed to attempt to have a high security level and a high speed performance in hardware on ubiquitous computing systems and multimedia. In this paper, however, we show that DDP-64 doesn't have a high security level, more precisely, we show that it is vulnerable to related-key differential attack. This attack, which is much faster than the key exhaustive search, requires about 254 data and 254 time complexities. This work is the first known cryptanalytic result on DDP-64 so far.
| Original language | English |
|---|---|
| Pages (from-to) | 267-279 |
| Number of pages | 13 |
| Journal | Telecommunication Systems |
| Volume | 44 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 2010 Aug 1 |
Keywords
- Block cipher
- Data-dependent permutation
- DDP-64
- Differential cryptanalysis
- Related-key attack
- Ubiquitous
ASJC Scopus subject areas
- Electrical and Electronic Engineering
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Cite this
Lee, C., Lee, S., Park, J. H., Hussain, S., & Song, J. H. (2010). Security analysis of pure DDP-based cipher proper for multimedia and ubiquitous device. Telecommunication Systems, 44(3-4), 267-279. https://doi.org/10.1007/s11235-009-9264-8