ATOMAS A Transaction-oriented Open Multi Agent-System. Final(2)

ATOMAS:

I V

P R

ATOMAS:A Transaction-oriented Open Multi Agent-SystemFinal Report

A Project Funded By Tandem Inc., Cupertino

22.6.1998

Authors: Prof. Dr. K. Rothermel Dr. M. Schwehm Dipl.- Inform. J. Baumann Dipl.- Inform. F. Hohl Dipl.-Inform. M. Straßer Institute for Parallel and Distributed High Performance Systems University of Stuttgart Breitwiesenstraße 20-22 D-70565 Stuttgart

ATOMAS:

ContentsContents

Section 1:Introduction

Section 2:Workplan and Project State

WP 2.1: Design and Implementation of Agent Migration

WP 2.2: Requirement Analysis Concerning Security

WP 2.3 Recoverable Agents

WP 2.4 Developed Concepts and Implementation

Orphan Detection for Mobile Agent Systems

Section 3:WP 2.2: Security

Abstract

Introduction

The Problem of Malicious Hosts

Existing Approaches

Blackbox Security: The Idea

Mobile Cryptography

Time Limited Blackbox Protection

What Is Changing If the Blackbox Is Time Limited?

No communication with a third party

Communication only with trusted servers

Communication with untrusted servers

Migration of the agent

How Can We Reach Time Limited Blackbox Protection?

Agent mess-up algorithms

Agent attributes that can be modified

Statements

Data

Abilities and characteristics of the attacker

Examples for mess-up algorithms267777789991013141516161617171919202020212121