Signing Protocol for Service Level Agreements in Virtual Organizations

1
Signing Protocol for Service Level Agreements in
Virtual Organizations Environment a Study
Based on TrustCoM Framework

• By
• Rabih Ghannoum
• Olga Cerrato
• Supervised by
• Gustav Boström (DSV)
• Pablo Giambiagi (SICS)

2
Agenda

• Introduction
• Background
• Problem
• Objective
• Audience
• Method
• Limitations

3
Introduction

• This presentation covers the first chapter of our
  thesis. The first chapter presents a complete
  outline of the thesis, what it is about, why, and
  how it is carried out.

4
Background

• Concept of Virtual Organizations (VOs)
• E.g TrustCoM
• VO technologies
• VO trust and security aspects
• Service Level Agreements (SLAs)
• Contract Signing Protocols

5
Problem

• Real life vs. electronic contract signing
• Simultaniety vs. fairness
• Each protocol gives certain security properties
• The challenge is to match a right contract
  signing protocol to dynamic VO requirements

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Objective

• The end result of our thesis work is 1) to
  choose and 2) implement a prototype of the
  contract signing protocol, that is most suitable
  for SLAs in dynamic VOs.

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Audience

• Beneficiaries of this work are the developers of
  similar projects to TrustCoM, i.e. those who want
  to know what SLA signing protocol suits best for
  dynamic VOs
• Those who use TrustCom for VO development
• Those who use other frameworks for VO development
  and want to compare
• Others, who want to gain an overview of contract
  signing protocols

8
Method 1

• This work is an example of artefact development
• Logical level inductive method
• Approach level explorative study
• Method level literature survey
• Analysis level qualitative

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Method 2
Sign. protocols survey
Risk analysis using TrustCom Documentation
S T EP 2
S T EP 1
Sign. protocols properties
Security requirements
Protocol-property matrix
Step 3 Mapping between TrustCom requirements and
protocol properties
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Method 3
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Limitations

• Only contract signing protocols are covered
• Not all existing protocols are presented
• Not applicable to all VOs
• But the process and the information on protocols
  can still be used