Telecommunication Systems

, Volume 44, Issue 3, pp 267-279

First online:

Security analysis of pure DDP-based cipher proper for multimedia and ubiquitous device

  • Changhoon LeeAffiliated withSchool of Computer Engineering, Hanshin University
  • , Sangjin LeeAffiliated withCenter for Information Security Technologies (CIST), Korea University Email author 
  • , Jong Hyuk ParkAffiliated withDepartment of Computer Science and Engineering, Seoul National University of Technology
  • , Sajid HussainAffiliated withJodrey School of Computer Science, Acadia University
  • , Jun Hwan SongAffiliated withDepartment of Mathematics, Hanyang University

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


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.


Ubiquitous Block cipher DDP-64 Data-dependent permutation Related-key attack Differential cryptanalysis