Abstract
As the world is moving towards the enhanced connectivity in our day-to-day activities with the handheld devices, PDAs and many other resource constrained devices. The scope for the intrusion into those devices is also increasing rapidly. From days when computing something is not just completed in one machine but on a shared platform with the use of Internet, regardless of time and place. In order to perform such tasks, first the networks of connected devices are formed. As the strength of the network grows in terms of the number of connected devices, it becomes more susceptible to the outside threats. Inadvertently it paves way to access/modify the information stored in the computer. This challenge can be overcome with the use of cryptographic algorithms to transmit/receive or access the data stored in the system. Usually, the normal cryptographic algorithms require lots of computation/resources in the end devices. The problem of unauthorized data access/modification is becoming more worrisome when the end device is not equipped enough to tackle the security intrusion as in the case with the resource constrained devices. Therefore, this paper discusses about the different lightweight algorithms that remain suitable to be used for such resource constrained devices.
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