Optimized Self-Synchronizing Mode of Operation. - Ammar Alkassar; Alexander Geraldy; Birgit Pfitzmann; Ahmad-Reza Sadeghi (FSE, 2001)

Secure object identification: or: solving the Chess Grandmaster Problem. - Ammar Alkassar; Christian Stüble; Ahmad-Reza Sadeghi (NSPW, 2003)

Obtaining True-Random Binary Numbers from a Weak Radioactive Source. - Ammar Alkassar; Thomas Nicolay; Markus Rohe (ICCSA (2), 2005)

Security Architecture for Device Encryption and VPN. - Ammar Alkassar; Michael Scheibel; Michael Stübel; Ahmad-Reza Sadeghi; Marcel Winandy (ISSE, 2006)

SLC: Efficient Authenticated Encryption for Short Packages. - Ammar Alkassar; Elena Andreeva 001; Helger Lipmaa (Sicherheit, 2006)

A Security Architecture for Enterprise Rights Management. - Ammar Alkassar; Rani Husseiki; Christian Stüble; Michael Hartmann (ISSE, 2007)

MoTrust-TCG: Manipulationsschutz für mobile Signaturanwendungen mittels "Trusted Computing". - Ammar Alkassar; Utz Gnaida; Thomas Quirin (Sicherheit, 2008)

Supporting Semi-automated Compliance Control by a System Design Based on the Concept of Separation of Concerns. - Sebastian Haas; Ralph Herkenhöner; Denis Royer; Ammar Alkassar; Hermann de Meer; Günter Müller (PrimeLife, 2010)

Securing Smartphone Compartments: Approaches and Solutions. - Ammar Alkassar; Steffen Schulz 001; Christian Stüble; Sven Wohlgemuth (ISSE, 2012)

Sicherheitskern(e) für Smartphones: Ansätze und Lösungen - Vom Mikrokern bis zu Capabilities - Verschiedene Lösungsansätze für die App-Trennung und -Kontrolle. - Ammar Alkassar; Steffen Schulz 001; Christian Stüble (Datenschutz und Datensicherheit, 2012)

Secure Partitioning of Application Logic In a Trustworthy Cloud. - Ammar Alkassar; Michael Gröne; Norbert Schirmer (ISSE, 2015)