Implementation of Lightweight Crypto Processor Using Logistic Map for Wireless Sensor Network

Use of a suitable cryptographic algorithm for wireless sensor networks is important due to the limitations of energy, computation capability and storage resources of the sensor nodes. Among two basic types of cryptographic techniques, namely asymmetric and symmetric key cryptography, symmetric cryptography technique is considered to be efficient over other in terms of computation cost. In symmetric key encryption, the secret key is known prior to encryption and decryption process. Therefore, in a wireless sensor network where keys are pre-distributed with Key Pre-distribution Schemes (KPS), can be used by both sides, i.e. sender and receiver nodes. In this paper, we will discuss symmetric key encryption techniques that can be efficiently used in wireless sensor network and explain the design possibilities and computation cost of using symmetric key cryptographic method. We have discussed the design of a crypto processor using a well-known chaotic map called Logistic map. Also, we have performed some experiments on the crypto processor and the results were stated.

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