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Selected problems of security of information confidentiality in cyberspace

Wolaniuk L.

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki

2017

Nr 4

194--207

Information confidentiality is the one of the cornerstones of IT security, which is defined and described in ISO/IEC 27000 standard. Contemporary practices of disclosing information to unauthorized persons and systems are the reason for difficulties in this concept implementation. At every step we encounter situations where information is extracted or obtained illegally from different sources. The main purpose of this paper is to present the issue of information confidentiality protection in cyberspace, as a complex, full of contradictions problem of techno-social character. The role of information confidentiality in functioning of a society, organization and individual has been described. The most important information confidentiality threats have been characterized and the description of a number of incidents illustrating those threats has been quoted. Contemporary security threats have been presented as well as selected methods of information confidentiality protection transmitted in ICT networks. The characteristics of protection systems of information confidentiality have been analyzed, with special attention paid to their functionality and vulnerability to existing threats. The concept of protecting the confidentiality of information transmitted on the Internet based on the use of cryptography and steganography has been presented.

Algebraic Framework for the Specification and Analysis of Cryptographic-Key Distribution

Sabri K. E., Khedri R.

Fundamenta Informaticae

2011

Vol. 112, nr 4

305-335

Several organizations generate and store a wide range of information in what is commonly referred to as data stores. To access the information within these data stores, two main architectures are widely adopted. The first architecture gives access to information through a trusted server that enforces established confidentiality policies. The second one allows the information to be public but in its encrypted form. Then through a scheme for the distribution of cryptographic keys, each user is provided with the keys needed to decrypt only the part of the information she is authorized to access. This paper relates to the latter architecture. We introduce an algebraic framework that takes into consideration a new perspective in tackling the key-distribution problem. We use the proposed framework to analyze key-distribution schemes that are representative of the ones found in the literature. The framework enables the specification and the verification of key-distribution policies. We also point to several other applications related to measures ensuring information confidentiality.