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Since conventional encryption techniques are incompetence with most of IoT devices we included in the second category the 2 types of encryption techniques which are manly introduced to work with IoT devices. The first is Light weight encryption technique which is a compacted version of conventional encryption techniques by lowering the coding scale to minimize the utilization of device hardware. The consideration of IoT devices requirement of minimizing the effect on hardware resources, security has been compromised and weakened. Again, there are many different encryption types under lightweight encryption which makes the choice between them is complex task.
The second type is the combined encryption which is found to resolve the simplicity of lightweight encryption and bring some flexibility to IoT data encryption by combining two or more data encryption approaches As each encryption technique has its advantages and disadvantages, the combined technique aims to confront each drawback.
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IEEE/ICACT20210256 Slide.12
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