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This contribution discusses algorithms for strong authentication of applications in mobile devices. The current LTE and IMS networks provide strong authentication using USIM smart cards based on AKA algorithm. The problem of this authentication is that this authentication is under the sole control of Telco operators. We can expect that more applications will be placed into the IMS environment in the...
We introduce dynamic internal message routing algorithm in overlay network used by distributed file system. Messages containing system requests are usually smaller than messages carrying data, but their number is much higher. Each kind of message has special requirements on quality of service. Messages carrying data require high bandwidth. Messages containing system requests are crucial for system...
Using of mobile devices has grown over the past years. Under the term “mobile devices”, we can see cell phones, personal digital assistants (PDA), smart phones, netbooks, tablets etc. Mobile devices provide many function e.g. accessing internet and e-mail, playing music and movies, accessing files from remote storage. Disadvantage of mobile devices is that connection to the internet can vary. It can...
Need of storing huge amounts of data has grown over the past years. The data should be stored for future reuse or for sharing among users. Data files can be stored on a local file system or on a distributed file system. A distributed file system provides many advantages such as reliability, scalability, security, etc. This paper shows new trends in these systems with a focus on increasing performance...
Mobile devices manage limited resources, above all data storage capacity and data transfer rate. Data amount used by nowadays applications is beyond the capability of mobile devices. A distributed file system presents an appropriate solution, but current distributed file systems are not suitable for mobile devices. We have explored the properties of current distributed file systems in relation to...
In recent years, versioning has emerged as a very popular operating system feature for file systems. Some of these systems can provide user friendly âgo back in timeâ feature, where the user can see exactly how file system looked on the dates he specifies. The advantages of these techniques are however, not present or supported by most relational database systems used worldwide. Using versioning...
Dependability is an essential property of critical systems and it also contributes to the quality of non-critical systems. There already exists an agreement what this term means, but we are still in the process of searching for an answer how to create dependable software systems in a cost-effective way. For different contexts, the how question may have different correct answers. In this paper, we...
Reliability and security are properties which are required by any computing system. This paper will describe modern trends in distributed file systems (DFS) oriented on reliability and security in these systems. The first part will present the definition of distributed systems and distributed file systems, with a focus on reliability and security in these systems, then describe traditional DFS like...
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