Abstract: With this shared environment, security is one of the essential factors for the network users. Transfer of data are done through intermediate node, hence data may loss due to the unauthorized persons in the intermediate node. For this issue Disruption-tolerant network (DTN) is a technology which allows the node to communicate with each other in secure manner. DTN technology were used to transfer the data with the help of cryptographic method that provide a most security factor for the data, here the data were encrypted in some format, hence if hacker hack the data means they cannot know the message which they transmitted from the one to another node. For this issue this survey provides a various technology of transferring data with the secure manner.
Keywords: Wireless network, DTN, Military environment and secure transfer of data.