ALICA: A Multi-S-Box Lightweight Cryptographic Algorithm Based on Generalized Feistel Structure

Algorithm 2

Subkey generation algorithm.

	Input: key sequence grouping KEY,
	Keys = new int [48]
	for num in range (48):
	for i in range (2):
	index = () mod 16
	sbox_output =
	KEY [index] = sbox_output
	xor_value = 0
	for i in range (16):
	if (XOR (KEY [i])):
	xor_value = (xor_value << 1)|0x01
	KEY [i] = (KEY [i] << 1)|0x01
	else:
	xor_value = xor_value << 1
	KEY [i] = KEY [i] << 1
	new_key = (xor_value << 16)|(KEY [() mod 16] << 8 & 0xff00)|(KEY [() mod 16] & 0xff)
	Keys [num] = new_key
	Output: Keys