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Security is a more important aspect in the IoT based communications due to the vast heterogeneity of devices used in the network. Considering the challenges in the provision of security in the IoT network, this paper proposes a new trust ensuring mechanism with multi contextual aspects including the interactions between the IoT nodes and their energy levels. Furthermore, a minimum hop count mechanism is also proposed to select a path with less processing delay. Combining all these multi facets, a composite routing metric is derived in this paper to define the trustworthiness of IoT node before choosing it as a next hop communicating node. An extensive simulations are carried out over the proposed approach by varying the network parameters and the performance is measured through the performance metrics namely, packet deliver ratio, malicious detection rate, network life time etc. The obtained Malicious detection rate and network life time of proposed approach outperforms the conventional approaches. [ABSTRACT FROM AUTHOR]