The size of cryptographic keys belongs to aspects that are quite easily dealt with in theory but that have to be carefully weighted in the practical cryptography. Particularly, current as well as predicted advances in technology must be taken into account as these dictate lower bounds for the key size to ensure reasonable security even with respect to specialized machines. On the other hand too...

In a world made of interconnected systems which manage huge amounts of confidential and shared data, security plays a significant role. Policies are the means by which security rules are defined and enforced. The ability to evaluate policies is becoming more and more relevant, especially when referred to the cooperation of services belonging to un-trusted domains. We have focused our attention ...

This paper describes a security middleware for enhancing the interoperability of public key infrastructure (PKI). Security is a key concern in e-commerce and is especially critical in cross-enterprise transactions. Public key cryptography is widely accepted as an important mechanism for addressing the security needs of e-commerce transactions because of its ability to implement nonrepudiation. ...

Recently, there has been an increase of reported security incidents hitting large software systems. Such incidents can originate from different attackers exploiting vulnerabilities of different parts of a system. Hence, there is a need for enhancing security considerations in software development. It is crucial for requirements engineers to identify security threats early on, and to refine the ...

Nomadic computing using powerful portable systems has entered the mainstream of computing due to the recent progress in terms of performance and usability of the necessary hardware. However, most of these systems are still being used stand-alone with almost no provision for management support in the home as well as in the visited domain. This complicates connguration by forcing manual intervent...

Abstract In the light of current pandemic, labour market has suffered many changes: from typical 9 to 5 job done office, accommodation a work home type job. Even if we speak about employer or employee, situation brought difficulties regarding how social security system can help each one. this paper main focus will be on impact pandemic with strong accent unemployment benefits and statistics imm...

This paper presents an evolutionary approach to the sensor management of a biometric security system that improves robustness. Multiple biometrics are fused at the decision level to support a system that can meet more challenging and varying accuracy requirements as well as address user needs such as ease of use and universality better than a single biometric system or static multimodal biometr...