Techniques for privacy and authentication in personal communication systems

The resistance of plastic (primarily polyethlene) pipe to rapid axial crack propagation under pressure is specified using the ISO 13477 'S4' (small scale steady state) test method. Pipe performance in this test may be very sensitive to temperature under standard test conditions. There has recently been concern that the temperature conditioning of pipe specimens required by ISO 13477 may not be sufficiently precise. In order to compensate for an over-estimated increase in surface temperature between removal from the conditioning fluid and testing, some laboratories condition specimens well below test temperature. Here, infra-red imaging data are used to calibrate a simple and conservative model for the evolution of surface temperature during this interval. The results broadly support the present specification for testing at 0°C, and provide a more secure basis for conditioning of specimens to be tested at lower temperatures.

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“…Laboratory [8], has shown the importance of siting thermocouple leads along isotherms to minimise thermal conduction along them.…”

Section: Discussionmentioning

confidence: 99%

Specimen temperature conditioning and drift before an S4 pipe fracture test

2004

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“…So far, many of the current researches pay their attention on how to provide a secure, robust, efficient security scheme to the existing confidentiality protocol [1,3,6,8,9,10,16,17,18,20,21,22] † . However, none of them achieves the † Since the UMTS is the descendant of GSM, we consider that many of these protocols can be inherited by the UMTS.…”

Section: The Proposed Schemementioning

confidence: 99%

On the security of an enhanced UMTS authentication and key agreement protocol

Hwang¹,

Chong²,

Ou³

2010

Trans Emerging Tel Tech

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In this paper, we propose a practical and secure authentication and key agreement (AKA) scheme for Universal Mobile Telecommunications System (UMTS). The paper introduces a new requirement, 'home network should be partially trusted in an authentication scheme' to the UMTS. The scheme integrates symmetric and public key cryptosystem. Issues such as kinds of 'subscriber identity/location confidential' and 'non-repudiation services' are solved in the scheme. The paper provides computational analysis, messages transmission length analysis to the proposed scheme. Furthermore, comparisons with other schemes are also given. The results demonstrate that the proposed scheme is practical and secure. Copyright (C) 2010 John Wiley & Sons, Ltd

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“…The authentieation of the telephone placing the call was implemented through a Number Assignment Module (NAM) and an Electronic Serial Number (ESN) [5]. Since ESN and phone number are transmitted in clear in these systems, it would be very easy to clone the phone and thus cause several millions of dollars loss of benefit to operators every year.…”

Section: Introductionmentioning

confidence: 99%

A New Authentication Protocol for Portable Communication Systems

Jansen

Tilborg

1999

Secure Information Networks

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With the global deployment of portable communication systems and the ongoing developments in this area, one expects more and more sophisticated security features to be provided such as entity authentication, robust user identity confidentiality and non-repudiation services. Motivated by these new security requirements, this article analyzes the security of authentication protocols in several mobile communication industry standards, such as DAMPS, GSM, and TETRA, and several proposals for future mobile communication systems. A new authentieation protocol is presented to provide the above security services using symmetrie cryptographic techniques only. The security and complexity of the new protocol are analyzed and compared with the aforementioned protocols.B. Preneel (ed.), Secure Information Networks

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Techniques for privacy and authentication in personal communication systems

Cited by 76 publications

References 1 publication

Specimen temperature conditioning and drift before an S4 pipe fracture test

Specimen temperature conditioning and drift before an S4 pipe fracture test

On the security of an enhanced UMTS authentication and key agreement protocol

A New Authentication Protocol for Portable Communication Systems

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