There have been various security measures proposed for protect Mobile Ad Hoc Networks (MANET). These can be categorized in two main of security measures. That is Prevention and Detection/Reaction mechanisms. Prevention mechanisms are considered as the premier defense line against attackers. On the other hand Intrusion Detection Systems (IDS) is second layer of security to defense the attacks th...

Web service invocation occurs over the Internet, which is a public network. This increases concern of the requester for adequate security of his private data. While using the web services, the security requirements of the user usually pertain to confi dentiality, integrity, authentication and non-repudiation for the input information that the user provides and the information received as output...

Security testing is very important to assure a certain level of reliability in a system. On the system level, security testing has to guarantee that security requirements such as confidentiality, integrity, authentication, authorization, availability and non-repudiation hold. In this paper, we present an approach to system level security testing of service oriented systems that evaluates securi...

Non-repudiation is a security service that provides cryptographic evidence to support the settlement of disputes. In this paper, we introduce the state-of-the-art of multi-party non-repudiation protocols, and analyze the previous work where one originator is able to send the same message to many recipients. We propose a new multi-party non-repudiation protocol for sending different messages to ...

Many protocols running over the Internet are neither formalised, nor formally analysed. The amount of documentation for telecommunication protocols used in real-life applications is huge, while the available analysis methods and tools require precise and clear-cut protocol clauses. A manual formalisation of the Session Initiation Protocol (SIP) used in Voice over IP (VoIP) applications is not f...

Network security protocols make use of cryptographic techniques to achieve goals such as confidentiality, authentication, integrity and non-repudiation. However, the fact that strong cryptographic algorithms exist does not guarantee the security of a communications system. In fact, it is recognised that the engineering of security protocols is a very challenging task, since protocols that appea...

A digital signature can be associated with Internet messages to guarantee sender authentication, message integrity, and nonrepudiation of origin. The verification process for incoming digitallysigned messages is usually performed by the email client on behalf of the end user. However, if a digital signature is applied to data that is subjected to automatic elaboration in order to maintain the a...

Whereas the traditional notion of trust primarily focuses on trust in a trading partner, trust in e-business also incorporates the notion of trust in the infrastructure and the underlying control mechanisms (technology trust), which deals with transaction integrity, authentication, confidentiality, and non-repudiation. We argue that value creation in B2B e-commerce is heavily dependent on techn...

Digital signatures whose security does not rely on any unproven computational assumption have recently received considerable attention. While these unconditionally secure digital signatures provide a foundation for long term integrity and non-repudiation of data, currently known schemes generally require a far greater amount of memory space for the storage of secret and public keys than a tradi...

Several applications require robust and tamper-proof logging systems, e.g. electronic voting or bank information systems. At Scytl we use a technology, called immutable logs, that we deploy in our electronic voting solutions. This technology ensures the integrity, authenticity and non-repudiation of the generated logs, thus in case of any event the auditors can use them to investigate the issue...