[Retracted] A Secure Environment Using a New Lightweight AES Encryption Algorithm for E-Commerce Websites

Algorithm 2

Padding.

	Input: initial message (order form as string) as matrix of 4 ∗ 4 of bytes
	Output: Expanded message (the padded order form) as matrix of 4 ∗ 4 of bytes
	Start
	Read message (M)
	Compute message length (N)
	If N < 16 then
	The number of added characters (P) = 16 – N
	For I = P down to 1
	M = M concatenate I
	End