A Secure Image Encryption Algorithm Based on  Rubik's Cube Principle

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left"> Image</td><td align="center"> Center cropping</td><td align="center"> Sides cropping</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left"><span style="font-family:monospace">Lena </span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M207" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
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<text transform="matrix(1,0,0,-1,-71.95,60.86)">
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<tspan style="font-size: 12.50px; " x="9.3772497" y="0">9</tspan>
<tspan style="font-size: 12.50px; " x="15.62875" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="41.685001" y="0">0</tspan>
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<tspan style="font-size: 8.75px; " x="0" y="0">3</tspan>
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</svg></span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M208" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
<g transform="translate(72,-60.5)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
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<tspan style="font-size: 12.50px; " x="15.62875" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
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<tspan style="font-size: 8.75px; " x="0" y="0">3</tspan>
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</g>
</svg></span></td></tr><tr><td align="left"><span style="font-family:monospace">Black </span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M209" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
<g transform="translate(72,-60.5)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
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<tspan style="font-size: 12.50px; " x="9.3772497" y="0">7</tspan>
<tspan style="font-size: 12.50px; " x="15.62875" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="41.685001" y="0">0</tspan>
</text>
<text transform="matrix(1,0,0,-1,-24.01,66.03)">
<tspan style="font-size: 8.75px; " x="0" y="0">3</tspan>
</text>
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</g>
</svg></span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M210" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
<g transform="translate(72,-60.5)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
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<tspan style="font-size: 12.50px; " x="15.62875" y="0">9</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="41.685001" y="0">0</tspan>
</text>
<text transform="matrix(1,0,0,-1,-24.01,66.03)">
<tspan style="font-size: 8.75px; " x="0" y="0">3</tspan>
</text>
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</g>
</svg></span></td></tr><tr><td align="left"><span style="font-family:monospace">Baboon </span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M211" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
<g transform="translate(72,-60.5)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="9.3772497" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="15.62875" y="0">5</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
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<tspan style="font-size: 8.75px; " x="0" y="0">3</tspan>
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</g>
</svg></span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M212" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
<g transform="translate(72,-60.5)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="9.3772497" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="15.62875" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
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<text transform="matrix(1,0,0,-1,-24.01,66.03)">
<tspan style="font-size: 8.75px; " x="0" y="0">3</tspan>
</text>
</g>
</g>
</svg></span></td></tr><tr><td align="left"><span style="font-family:monospace">Checkerboard</span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M213" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
<g transform="translate(72,-60.5)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="9.3772497" y="0">8</tspan>
<tspan style="font-size: 12.50px; " x="15.62875" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="41.685001" y="0">0</tspan>
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<text transform="matrix(1,0,0,-1,-24.01,66.03)">
<tspan style="font-size: 8.75px; " x="0" y="0">4</tspan>
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</svg></span></td><td align="center"><span style="width: 66.150002px;"><svg height="14.375" id="M214" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 66.150002 14.375" width="66.150002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
<g transform="translate(72,-60.5)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">1</tspan>
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<tspan style="font-size: 12.50px; " x="9.3772497" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="15.62875" y="0">4</tspan>
<tspan style="font-size: 12.50px; " x="24.655916" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="41.685001" y="0">0</tspan>
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<text transform="matrix(1,0,0,-1,-24.01,66.03)">
<tspan style="font-size: 8.75px; " x="0" y="0">4</tspan>
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</svg></span></td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

MSE between original images and the decrypted versions under cropping attack.

Journal of Electrical and Computer Engineering

tab7

Table 7

Table 7: A Secure Image Encryption Algorithm Based on  Rubik's Cube Principle 