Design Space Exploration for High-Speed Implementation of the MISTY1 Block Cipher

Table 3

Area reduction of the proposed FO function.

Method	FTN	LUTs					Area	% reduction w.r.t.
		2-1	3-1	4-1	5-1	6-1		[10]	[12]
Prop.	S9-1 ∼ S9-7	—	1	43	19	—	114	53.3	41.2
	S7-1 ∼ S7-5	7	—	13	15	—
	S9-8	—	—	9	—	—
	S9-9	—	—	—	9	—
	S9-10	—	—	—	2	7
	S7-6	7	—	—	—	—
	S7-7	—	7	—	—	—
	KOi1	16	—	—	—	—
	KOi2	16	—	—	—	—
	KOi3	16	—	—	—	—
	KOi4 and I5L	—	16	—	—	—
	FI2 XOR	16	—	—	—	—
	FI1	14	1	56	43	—
	FI2	7	1	65	34	—
	FI3	7	8	56	36	7
	{FO + XOR}	92	26	177	113	7
[19]	FO	—					244
[21]	FO	—					194	—