TY - JOUR
T1 - Security analysis of pure DDP-based cipher proper for multimedia and ubiquitous device
AU - Lee, Changhoon
AU - Lee, Sangjin
AU - Park, Jong Hyuk
AU - Hussain, Sajid
AU - Song, Jun Hwan
N1 - Funding Information:
This work is supported by a Korea University Grant.
PY - 2010/8
Y1 - 2010/8
N2 - 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.
AB - 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.
KW - Block cipher
KW - DDP-64
KW - Data-dependent permutation
KW - Differential cryptanalysis
KW - Related-key attack
KW - Ubiquitous
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U2 - 10.1007/s11235-009-9264-8
DO - 10.1007/s11235-009-9264-8
M3 - Article
AN - SCOPUS:77954887026
VL - 44
SP - 267
EP - 279
JO - Telecommunication Systems
JF - Telecommunication Systems
SN - 1018-4864
IS - 3-4
ER -