A Novel Audio Cryptosystem Using Chaotic Maps and DNA Encoding

Algorithm 1

The hybrid chaotic shift transform algorithm.

Input: The original speech signal and chaotic series

matrices and

Output: The column and row shuffled speech block

() Generate the column and row shift matrices by sorting

and chaotic sequence

() for to do

() if mod(, 2) = 0 then

Cyclic shift the speech segment in column of to

down with the step size of ;

() else

Cyclic shift the speech segment in column of to

up with the step size of ;

() end if

() end for

() Denote the column shifted speech block as .

() for to do

() if mod(, 2) = 0 then

Cyclic shift the speech segment in row of to right

with the step size of ;

() else

Cyclic shift the speech segment in row of to left

with the step size of ;

() end if

() end for

() Denote the row shifted speech block as .