International Journal of Computer Applications
In the past few decades, Delay Tolerant Networks (DTNs) have emerged as one of the hot topics for research. It is a network, used in environments where end to end connectivity is unavailable. It has no fixed infrastructure and has scarce resources. DTNs use store and forward technique which is called opportunistic data forwarding. One of the most important aspects of DTNs is security, because they are a new network paradigm and should be acceptable by all. This paper discusses the works related to DTN security, their analysis, drawbacks, comparisons, advantages and other factors.