A Very Compact AES-SPIHT Selective Encryption Computer Architecture Design with Improved S-Box

Table 2

The comparison of S-boxes (table from [14]).

Basis	Type	XOR	NAND	NOT	MUX	Total gates
Canright	Merged	107	36	2	16	253
	S-box	91	36	0	0	195
	Inv S-box	91	36	0	0	195
Mentens	Merged	118	36	0	16	271
	S-box	96	36	0	0	204
	Inv S-box	97	36	0	0	206
Satoh	Merged	119	36	3	16	275
	S-box	100	36	0	0	211
	Inv S-box	99	36	0	0	209
Worst	Merged	131	36	0	16	293
	S-box	107	36	0	0	223
	Inv S-box	106	36	0	0	222