A Novel Image Encryption Scheme Based on PWLCM and Standard Map

Algorithm 1

The proposed image encryption scheme.

(1)	Input the plain image .
(2)	Create an initial state and a parameter of PWLCM: .
(3)	Generate .
(4)	Create a new initial state and a parameter of PWLCM: .
(5)	Calculate the vectors: .
(6)	fordo
(7)	Initialize permuted image .
(8)	for % Improved permutation process do
(9)	fordo
(10)	fordo
(11)	Calculate and a shift amount .
(12)	.
(13)	end for
(14)	end for
(15)	.
(16)	end for
(17)	Initialize medium and encrypted image: , .
(18)	fordo % High-speed diffusion
(19)	fordo
(20)	Perform row diffusion to get .
(21)	end for
(22)	fordo
(23)	Perform column diffusion to obtain .
(24)	end For
(25)	.
(26)	end for
(27)	.
(28)	end for
(29)	Output the final encrypted image .