Table 15 Modified secret key for the sensitivity analysis of secret key.

From: Novel structures of chaos-based parallel multiple image encryption and FPGA implementation

Parameters

Bit being changed

amount of difference

Reference/Note

\(\gamma ^{(2)}_0\)

\(b_{-49}\)

\(2^{-49}\)

Table 3

\(\gamma ^{(1)}_0\)

\(b_{-49}\)

\(2^{-49}\)

Table 3

\(x^{(2)}_0\)

\(b_{-48}\)

\(2^{-48}\)

Table 3

\(x^{(1)}_0\)

\(b_{-48}\)

\(2^{-48}\)

Table 3

\(S_0\)

\(b_{0}\)

1

Table 5

\(\{c^{(0)}_1, c^{(0)}_2,..., c^{(0)}_K\}\)

\(b_{0}\)

1

- Only one of initial ciphertext pixels changed

\(\{p^{(0)}_1, p^{(0)}_2,..., p^{(0)}_K\}\)

\(b_{0}\)

1

- Only one of initial plain pixels changed