Michael Hafner

	2008
26		Basel Katt, Xinwen Zhang, Ruth Breu, Michael Hafner, Jean-Pierre Seifert: A general obligation model and continuity: enhanced policy enforcement engine for usage control. SACMAT 2008: 123-132
25		Ruth Breu, Michael Hafner, Frank Innerhofer-Oberperfler, Florian Wozak: Model-Driven Security Engineering of Service Oriented Systems. UNISCON 2008: 59-71
24		Basel Katt, Ruth Breu, Michael Hafner, Thomas Schabetsberger, Richard Mair, Florian Wozak: Privacy and Access Control for IHE-Based Systems. eHealth 2008: 145-153
23		Berthold Agreiter, Michael Hafner, Ruth Breu: A fair Non-repudiation service in a web services peer-to-peer environment. Computer Standards & Interfaces 30(6): 372-378 (2008)
22		Muhammad Alam, Michael Hafner, Ruth Breu: Constraint based role based access control in the SECTET-frameworkA model-driven approach. Journal of Computer Security 16(2): 223-260 (2008)
	2007
21		Michael Hafner, Mukhtiar Memon, Muhammad Alam: Modeling and Enforcing Advanced Access Control Policies in Healthcare Systems with Sectet. MoDELS Workshops 2007: 132-144
20		Berthold Agreiter, Muhammad Alam, Ruth Breu, Michael Hafner, Alexander Pretschner, Jean-Pierre Seifert, Xinwen Zhang: A technical architecture for enforcing usage control requirements in service-oriented architectures. SWS 2007: 18-25
19		Berthold Agreiter, Michael Hafner, Ruth Breu: A Fair Non-repudiation Service in a Web Services Peer-to-Peer Environment. WOSIS 2007: 63-72
18		Muhammad Alam, Ruth Breu, Michael Hafner: Model-Driven Security Engineering for Trust Management in SECTET. JSW 2(1): 47-59 (2007)
	2006
17		Muhammad Alam, Ruth Breu, Michael Hafner: Modeling permissions in a (U/X)ML world. ARES 2006: 685-692
16		Muhammad Alam, Michael Hafner, Ruth Breu: Modeling Authorization in an SOA based Application Scenario. IASTED Conf. on Software Engineering 2006: 79-84
15		Michael Hafner, Muhammad Alam, Ruth Breu: Towards a MOF/QVT-Based Domain Architecture for Model Driven Security. MoDELS 2006: 275-290
14		Muhammad Alam, Michael Hafner, Ruth Breu: A constraint based role based access control in the SECTET a model-driven approach. PST 2006: 13
13		Muhammad Alam, Michael Hafner, Ruth Breu: Constraint based role based access control (CRBAC) for restricted administrative delegation constraints in the SECTET. PST 2006: 44
12		Muhammad Alam, Michael Hafner, Ruth Breu, Stefan Unterthiner: A Framework for Modeling Restricted Delegation in Service Oriented Architecture. TrustBus 2006: 142-151
11		Michael Hafner, Ruth Breu, Berthold Agreiter, Andrea Nowak: SECTET - An Extensible Framework for the Realization of Secure Inter-Organizational Workflows. WOSIS 2006: 47-57
10		Michael Hafner, Ruth Breu, Berthold Agreiter, Andrea Nowak: Sectet: an extensible framework for the realization of secure inter-organizational workflows. Internet Research 16(5): 491-506 (2006)
	2005
9		Michael Hafner, Ruth Breu, Michael Breu: A Security Architecture for Inter-Organizational Workflows: Putting Security Standards for Web Services Together. ICEIS (3) 2005: 128-135
8		Ruth Breu, Michael Breu, Michael Hafner, Andrea Nowak: Web Service Engineering - Advancing a New Software Engineering Discipline. ICWE 2005: 8-18
7		Michael Hafner, Michael Breu, Ruth Breu, Andrea Nowak: Modelling Inter-organizational Workflow Security in a Peer-to-Peer Environment. ICWS 2005: 533-540
6		Michael Hafner, Ruth Breu: Realizing Model Driven Security for Inter-organizational Workflows with WS-CDL and UML 2.0. MoDELS 2005: 39-53
5		Jan Mendling, Michael Hafner: From Inter-organizational Workflows to Process Execution: Generating BPEL from WS-CDL. OTM Workshops 2005: 506-515
4		Ruth Breu, Michael Hafner, Barbara Weber, Andrea Nowak: Model Driven Security for Inter-organizational Workflows in e-Government. TCGOV 2005: 122-133
	2004
3		Ruth Breu, Michael Hafner, Barbara Weber: Modeling and Realizing Security-Critical Inter-Organizational Workflows. IASSE 2004: 139-144
2		Ruth Breu, Klaus Burger, Michael Hafner, Gerhard Popp: Towards a Systematic Development of Secure Systems. WOSIS 2004: 1-12
1		Ruth Breu, Klaus Burger, Michael Hafner, Gerhard Popp: Towards a Systematic Development of Secure Systems. Information Systems Security 13(3): 5-13 (2004)

Coauthor Index

1	Berthold Agreiter	[10] [11] [19] [20] [23]
2	Muhammad Alam	[12] [13] [14] [15] [16] [17] [18] [20] [21] [22]
3	Michael Breu	[7] [8] [9]
4	Ruth Breu	[1] [2] [3] [4] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [22] [23] [24] [25] [26]
5	Klaus Burger	[1] [2]
6	Frank Innerhofer-Oberperfler	[25]
7	Basel Katt	[24] [26]
8	Richard Mair	[24]
9	Mukhtiar Memon	[21]
10	Jan Mendling	[5]
11	Andrea Nowak	[4] [7] [8] [10] [11]
12	Gerhard Popp	[1] [2]
13	Alexander Pretschner	[20]
14	Thomas Schabetsberger	[24]
15	Jean-Pierre Seifert	[20] [26]
16	Stefan Unterthiner	[12]
17	Barbara Weber	[3] [4]
18	Florian Wozak	[24] [25]
19	Xinwen Zhang	[20] [26]