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In this paper, we propose a new cryptosystem based on matrix translation and Elliptic curve cryptography for developing a secure routing algorithm to provide energy efficient and secured data communications in Wireless Sensor Networks. Moreover, the newly proposed techniques are implemented by decomposing the process into the key generation phase, encryption phase, cluster based secure routing phase and decryption phase. For this purpose, we introduce two new tables namely space reference table and String Position based ASCII value and Prime number generation Table. Here, the Space reference table is used to assign the values for the spaces that are occurring in the sentence before the encryption and decryption process. Next, it uses the String Position based ASCII value and Prime number generation Table developed in this work to convert the strings into numerical digits and to allocate …