The class MA consists of languages that can be efficiently verified by classical probabilistic verifiers using a single classical certificate, and the class QMA consists of languages that can be efficiently verified by quantum verifiers using a single quantum certificate. Suppose that a verifier receives not only one but multiple certificates. In the classical setting, it is obvious that a clas...

Bu çalışmada, giderek büyüyen ve ilgi gören bir araştırma alanı olan helal gıda sertifikalandırması hususu üzerine durum analizi yapılmıştır. Helal ürünler Müslüman tüketiciler açısından hayati önem taşımakta buna bağlı olarak konuya ilişkin sayısı da son yıllarda artış göstermektedir. Bununla birlikte sertifikalara yönelik değerlendirme inceleme çalışmaları devam etmektedir. nedenle çalışmada;...

In spite of the fact that there are several companies that (try to) sell public key certificates, there is still no unified or standardized classification scheme that can be used to compare and put into perspective the various offerings. In this paper, we try to start filling this gap and propose a four-dimensional scheme that can be used to uniformly describe and classify public key certificat...

The term proxy certificate is used to describe a certificate that is issued by an end user for the purpose of delegating responsibility to another user so that the latter can perform certain actions on behalf of the former. Such certificates have been suggested for use in a number of applications, particularly in distributed computing environments where delegation of rights is common. In this p...

The notion of proprietary certificates [7] was recently introduced in an attempt to discourage sharing of access rights to subscription-based resources. A proprietary certificate is a certificate on a public key – the so-called proprietary key – that contains some information related to another (so-called collateral) certificate and has the property that if the owner of the proprietary public k...