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Packet integrity or modification attacks commonly happen in Opportunistic Networks (OppNets). In this paper, we propose a technique that uses Merkle trees to protect the integrity of the packets transferred in a network. When adopting the technique in an OppNet, nodes will be able to verify that data transferred from node to node is received unchanged and in its original state. Using a solid trust...
Our previous work led to the proposal of a method for secret computation without changing the polynomial degree in Shamir’s (k, n) secret sharing scheme. This scheme realizes secret computation for n
Message ordering is one of the essential problems in distributed systems and applications. In spite of the importance, most of publish/subscribe systems do not guarantee the ordering of messages and events because of its cost which may give an impact on the overall performance. When we suppose dynamic systems, such as peer-to-peer systems, the implementation of the message ordering would be pretty...
The purpose of this study is to clarify the relationship between a rugby player's personality and length of career and personality and position. This study was conducted with 59 male university rugby team members. The psychological tests were classified by athletic position and athletic experience. The data from the tests was analyzed by T-test and chi-squarestest. As a result, there was no significant...
Having the correct posture is essentially important in our life to make our body functions properly and keeps us healthy. In our previous work, a posture detection system using consumer mobile devices for checking proper posture in a daily exercise was proposed, where, in addition to acceleration values obtained from each device sensor, the possiblitly of using the strength of RSSI (Received Signal...
In this paper, we introduce a road surface conditionunderstanding and sharing system. Traffic accidents and obstructionsdue to bad weather conditions and poor road conditions areserious social problems. It is necessary for drivers to understandweather and road conditions in advance to avoid traffic accidentsand obstructions and it is necessary to alert drivers to weatherand road conditions in order...
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