نتایج جستجو برای: position based cryptography

تعداد نتایج: 3129196  

2005
Neal Koblitz Alfred Menezes

In recent years cryptographic protocols based on the Weil and Tate pairings on elliptic curves have attracted much attention. A notable success in this area was the elegant solution by Boneh and Franklin [7] of the problem of efficient identity-based encryption. At the same time, the security standards for public key cryptosystems are expected to increase, so that in the future they will be cap...

Journal: :CoRR 2009
Amin Daneshmand Malayeri Jalal Abdollahi

Nowadays, using cryptographic systems play an effective role in security and safety technologies. One of the most applied kind of cryptography is Symmetric Cryptography and its applications. New aspects of symmetric Cryptography methodologies and applications has been presented by this paper. Security-based networks and some complex technologies such as RFID and parallel security settings has b...

Nowadays, achieving desirable and stable security in networks with national and organizational scope and even in sensitive information systems, should be based on a systematic and comprehensive method and should be done step by step. Cryptography is the most important mechanism for securing information. a cryptographic system consists of three main components: cryptographic algorithms, cryptogr...

2012
Neha Chhabra

Quantum Cryptography is based upon the use of quantum effects and extends those effects for conventional cryptographic methods. The two major advantages of quantum cryptography over conventional cryptography are true random secret key generation and eavesdropping detection. Quantum cryptography has been developed which promises more secure communication than any existing technique and cannot be...

2009
Fang Tian Carlisle M. Adams

In this paper, we introduce how to use cryptography in network security and access control of an e-hospital. We first define the security goal of the e-hospital system, and then we analyze the current application system. Our idea is proposed on the system analysis and the related regulations of patients’ privacy protection. The security of the whole application system is strengthened through la...

Journal: :Finite Fields and Their Applications 2005
Steven D. Galbraith Alfred Menezes

Algebraic curves over finite fields are being extensively used in the design of public-key cryptographic schemes. This paper surveys some topics in algebraic curve cryptography, with an emphasis on recent developments in algorithms for the elliptic and hyperelliptic curve discrete logarithm problems, and computational problems in pairing-based cryptography.

2008
Piotr Szczechowiak Leonardo B. Oliveira Michael Scott Martin Collier Ricardo Dahab

By using Elliptic Curve Cryptography (ECC), it has been recently shown that Public-Key Cryptography (PKC) is indeed feasible on resource-constrained nodes. This feasibility, however, does not necessarily mean attractiveness, as the obtained results are still not satisfactory enough. In this paper, we present results on implementing ECC, as well as the related emerging field of Pairing-Based Cry...

Journal: :International Journal on Cryptography and Information Security 2016

Journal: :IACR Cryptology ePrint Archive 2016
Aurore Guillevic François Morain Emmanuel Thomé

Pairing based cryptography is in a dangerous position following the breakthroughs on discrete logarithms computations in finite fields of small characteristic. Remaining instances are built over finite fields of large characteristic and their security relies on the fact the embedding field of the underlying curve is relatively large. How large is debatable. The aim of our work is to sustain the...

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