Table 4 Key Pace analysis.

From: A new algorithm for multiple medical image encryption based on stacked representation and block division

Experiments

Key Space

Experiment 1

\(\:{\left({10}^{15}\right)}^{5\times\:8}\)

Experiment 2

\(\:{\left({10}^{15}\right)}^{5\times\:64}\)

Experiment 3

\(\:{\left({10}^{15}\right)}^{5\times\:512}\)

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