Pure ddp-based cipher : architecture analysis, hardware implementation cost and performance up to 6.5 gbps
Using Data-Dependent (DD) Permutations (DDP) as main cryptographic primitive, a new 64-bit block cipher is presented, ten-round DDP-64. Since the sum of all outputs of the conventional DDP is a linear Boolean function, non-linear DDP-based operation F is used additionally in DDP-64. The DDP-64 is a...
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Veröffentlicht in: | International arab journal of information technology 2005, Vol.2 (1), p.24-32 |
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Sprache: | eng |
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Zusammenfassung: | Using Data-Dependent (DD) Permutations (DDP) as main cryptographic primitive, a new 64-bit block cipher is
presented, ten-round DDP-64. Since the sum of all outputs of the conventional DDP is a linear Boolean function, non-linear
DDP-based operation F is used additionally in DDP-64. The DDP-64 is a pure DDP-based cipher, i. e. it uses only
permutations and the XOR operation. The designed cipher uses very simple key scheduling that defines high performance, especially in the case of frequent key refreshing. A novel feature of DDP-64 is the use of the switchable operation preventing
the weak keys. The offered high level security strength does not sacrifice the implementation performance of DDP-64. Design
and hardware implementation architectures of this cipher are presented. The synthesis results for both Field Programmable
Gate Arrays (FPGA) and Application Specific Integrated Circuits (ASIC) implementations prove that DDP-64 is very flexible
and powerful new cipher, especially for high speed WLANs and WPANs. The achieved hardware performance up to 6.5 Gbps
and the implementation area cost of DDP-64 are compared with other ciphers, used in security layers of wireless protocols (Bluetooth, WAP, OMA, UMTS and IEEE 802.11). From these comparisons, it is proven that DDP-64 is a flexible new cipher
with better performance in most of the cases, suitable for wireless communications networks of present and future. |
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ISSN: | 1683-3198 1683-3198 |