In this thesis we discuss two demanding problems from the field of computer and communication security that involve …, other than in traditional computer security problems, the adversary has a lot of control over the situation. The untrusted … ways: We propose relaxed, but still practically useful, notions of security for the DSP problem; we identify theoretical …

nicht voll vertrauenswŸrdigen Dienstanbieter betrachtet. Wir untersuchen die Grenzen der Sicherheit, die in diesem Szenario … erreicht werden kšnnen. Sicherheit wird dabei unter Zuhilfenahme aktueller komplexitŠtstheoretischer Arbeiten definiert. Dies … ermšglicht die Verwendung formaler Methoden zur Untersuchung der Bedingungen, unter denen verschiedene Grade von Sicherheit …

herausgearbeitet, wobei insbesondere mehrseitige Sicherheit und die Perspektive der IOTNS-Clients berŸcksichtigt werden, die in den … information about this object. This thesis discusses the information security challenges involved in the design and use of an IOT … discussed, including multilateral security and the client perspective, which have been neglected in IOT standards and research …

justice must be fully implemented already now, i.e., under the regime to succeed the Kyoto Protocol. First, the increase in …

The attraction of cloud computing is obvious with noticeable freedom from managing and hosting applications, platforms … disadvantages such as security, privacy, reliability, physical location of data and the unavailability of service due to crashes or …

When considering information security and privacy issues most of the attention has previously focused on data … operational and transactional data. Specifically, the security and privacy protection of metadata and metastructure information of … new perspective for information security and privacy. It is termed Meta Privacy and is concerned with the protection and …