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

Table 13

LUT utilization of SEA.

Components	Quantity	Total	Usage
Total no. of 4-input LUTs	10176	28672	35%
No. of LUTs used as logic	8793	8793	86%
No. of LUTs used as a route-thru	1257	1257	12%
No. of LUTs used for dual-port RAMs	64	64	~1%
No. of LUTs used as 16×1 ROMs	30	30	~0.5%
No. of LUTs used as shift registers	32	32	~0.5%