Table 3 Statistical analysis for N = 256, 512, 1024, 2048, 4096 and 256-bit hash.

From: Enhanced image hash using cellular automata with sponge construction and elliptic curve cryptography for secure image transaction

 

N = 256

N = 512

N = 1024

N = 2048

N = 4096

Average

\(\bar{B}\)

128.84

127.58

128.71

128.38

128.59

128.42

P(%)

50.33

49.83

50.28

50.15

50.23

50.164

\(\triangle\)B

8.27

7.86

8.04

7.86

7.80

7.96

\(\triangle\)P(%)

3.16

3.06

3.20

3.21

3.05

3.14

\(B_{min}\)

111

105

106

106

106

106.8

\(B_{max}\)

158

157

158

158

159

158

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