Implementation of Secure Communication via the RF Module for Data Acquisition

Table 3

SPECK algorithm variants of block size and key size.

Variant	Block size (bits)	Key size (bits)	Rounds	(, )
1	2x16 = 32	4x16 = 64	22	(2,7)
2	2x24 = 48	3x24 = 72	22	(3,8)
3		4x24 = 96	23	(3,8)
4	2x32 = 64	3x32 = 96	26	(3,8)
5		4x32 = 128	27	(3,8)
6	2x48 = 96	2x48 = 96	28	(3,8)
7		3x48 = 144	29	(3,8)
8	2x64 = 128	2x64 = 128	32	(3,8)
9		3x64 = 192	33	(3,8)
10		4x64 = 256	34	(3,8)