A Novel Audio Cryptosystem Using Chaotic Maps and DNA Encoding

Algorithm 2

Dynamic DNA encoding.

Input: Confused speech block and encoding matrices

and

Output: Encrypted speech signal

() Generate the encoding matrices from the chaotic sequence

generated from SM.

() Encode and using different DNA rules as depicted

in Figure 3.

() Encode the confused speech block using DNA rule 1.

() for to do

() if mod(, 2) = 0 then

XOR

Rotate right by one byte

() else

XOR

Rotate right by one byte

() end if

() end for

() Decode the encrypted DNA matrix using DNA rule 3.