Entropy-Based Block Scrambling Image Encryption Using DES Structure and Chaotic Systems

Table 2

Nucleotide computing rules under the first coding rule.

+	A	G	C	T	−	A	G	C	T
A	A	G	C	T	A	A	T	C	G
G	G	C	T	A	G	G	A	T	C
C	C	T	A	G	C	C	G	A	T
T	T	A	G	C	T	T	C	G	A