Information Security - MITSUBISHI ELECTRIC

The results of an evaluation of MISTY’s hardware implementation are as follows:

Implementation Evaluation Environment

	Development language: Verilog-HDL
	Simulator: Verilog-XL
	ASIC (Design library): Mitsubishi Electric 0.18_m CMOS ASIC library (Logic synthesis and function evaluation): Design compiler version 2000.11-SP1
	FPGA (Target FPGA): Xilinx Virtex1000E Series (Logic synthesis): Synplify version 6.2.4 (Function evaluation): Alliance version3.3.08i

(1) ASIC Evaluation Result (No pipeline implementation)

	Throughput priority Throughput: 2,800.9 [Mbps] Area size: 71.11 [Kgate] Throu./area: 39.39 [Kbps/gate] Latency: 1 [Cycles]
	Area priority Throughput: 78.4 [Mbps] Area size: 6.10 [Kgate] Throu./area: 12.85 [Kbps/gate] Latency: 35
	Throughput/area priority Throughput: 1,642.7 [Mbps] Area size: 16.94 [Kgate] Throu./area: 97.00 [Kbps/gate] Latency: 8

(2) FPGA Evaluation Result (Pipeline implementation)

	Throughput priority Throughput: 13,330.6 [Mbps] Area size: 6,432 [Slice] Throu./area: 2,072.5 [Kbps/slice]Latency: 82 [Cycles]
	Area Priority Throughput: 250.9 [Mbps] Area size: 1,462 [Slice] Throu./area: 171.6 [Kbps/slice] Latency: 8 [Cycles]
	Throughput/area priority (Pipeline implementation) Throughput: 13,330.6 [Mbps] Area size: 6,432 [Slice] Throu./area: 2,072.5 [Kbps/slice] Latency: 82 [Cycles]

MISTY 1’s (8 layers) encrypting speed is as follows:

Platform: Pentium III (800 MHz)
Language: Assembler
Key schedule: 230 cycles/key
Encryption: 207 cycles/block
Key schedule (Bit slice implementation): 46 cycles/key
Encryption (Bit slice implementation): 169 cycles/block

Platform: Alpha 21264 (667 MHz)
Language: Assembler
Key schedule: 200 cycles/key
Encryption: 197 cycles/block
Key schedule (Bit slice implementation): 17 cycles/key
Encryption (Bit slice implementation): 71 cycles/block

Platform: M16C (20 MHz)
Language: Assembler
Key schedule: 743 cycles/key
Encryption: 1,877 cycles/block
ROM size: 3,400 bytes
RAM size: 64 bytes

Platform: H8/300 (3.57 MHz)
Language: Assembler
Key schedule: 1,240 cycles/key
Encryption: 6,018 cycles/block
ROM size: 1,934 bytes
RAM size: 43 bytes

Platform: Z80 (5 MHz)
Language: Assembler
Language: Assembler
Key schedule: 3,283 cycles/key
Encryption: 13,553 cycles/block
ROM size: 1,992 bytes (Includes 1,152 bytes SBOX)
RAM size: 72 bytes