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This chapter discusses the need for trust and security in resource sharing. It discusses concepts such as authentication, authorisation and single sign on mechanisms.

Key concepts

  • Single sign-on access to distributed resources
  • Certification Authority (CA) and its problems
  • Shibboleth technologies
  • Portlets for finer grained security of portals – SCAMP, CCP and SPAM-GP ACP

Introduction

Many researchers require environments providing seamless access to and usage of a heterogeneous variety of distributed resources: on-line journals, data repositories and archives, software, large scale high-performance computing facilities (HPC) or indeed support for collaborations between distributed research teams themselves. The internet-age is truly upon us and there are few disciplines where radical IT-driven change in the way research is undertaken has not been felt. The vision of e-Science and the Grid, as part of e-Research, has been to support seamless and transparent access to such heterogeneous resources. Solutions within the e-Science model should support user/research-oriented environments offering seamless single sign-on to a range of research-specific distributed resources. For many disciplines however, trust and security are paramount and many existing models of single-sign on security are inadequate. Instead controlled trust-driven environments are required where sites can remain autonomous and in strict control of their resources through their own discretionary local access and usage policies. In this paper we outline how the UK Access Management Federation , augmented with advanced authorization solutions, supports this model. This UK example can serve as a more general exemplar for other national contexts.

Single sign-on and a centralized certification authority

It is a fact that security is essential for much, if not all, inter-organizational collaborative research. Many disciplines place a higher emphasis on security of resources, e.g. the clinical health domain, but even those disciplines where security is not a primary focus, e.g. the particle physics domain, would be seriously affected by downtime or compromise of HPC facilities that they use.

From a security perspective, the vision of e-Science and the Grid has been to provide single sign-on access to distributed resources, i.e. where a user is able to access multiple resources without the need for multiple, individual authentications (username/password challenges for example). This has been largely tackled in the UK through establishment of a centralized Certification Authority (CA – www.grid- support.ac.uk/ca ). Through recognizing and trusting a CA in associating the identity of a researcher with a particular digital certificate (typically through a local institutional Registration Authority charged with ensuring that the user presents in person their passport or matriculation card as evidence of their identity), single sign-on authentication can be supported. Thus researchers use their X509 certificate (or more often a proxy credential created from that X509 certificate) with a common username given by the distinguished name (DN) associated with that credential and a single (strong) password. Through sites trusting the CA that issued the certificate, the end user is able to access a wide range of resources that recognize that credential without the need for multiple usernames and passwords across those sites. In short, the approach is based upon a model of public key infrastructure (PKI) supporting user authentication.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Research in a connected world. OpenStax CNX. Nov 22, 2009 Download for free at http://cnx.org/content/col10677/1.12
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