InShopnito: an advanced yet privacy-friendly mobile shopping application

Mobile Shopping Applications (MSAs) are rapidly gaining popularity. They enhance the shopping experience, by offering customized recommendations or incorporating customer loyalty programs. Although MSAs are quite effective at attracting new customers and binding existing ones to a retailer's services, existing MSAs have several shortcomings. The data collection practices involved in MSAs and the lack of transparency thereof are important concerns for many customers. This paper presents inShopnito, a privacy-preserving mobile shopping application. All transactions made in inShopnito are unlinkable and anonymous. However, the system still offers the expected features from a modern MSA. Customers can take part in loyalty programs and earn or spend loyalty points and electronic vouchers. Furthermore, the MSA can suggest personalized recommendations even though the retailer cannot construct rich customer profiles. These profiles are managed on the smartphone and can be partially disclosed in order to get better, customized recommendations. Finally, we present an implementation called inShopnito, of which the security and performance is analyzed. In doing so, we show that it is possible to have a privacy-preserving MSA without having to sacrifice practicality

A secure mobile password manager

status: publishe

Restricting availability and improving secure storage in Android

status: publishe

MobCom Requirements: Flexible Access Control

Presentation of the preliminary progress for the Mobcom user groupstatus: publishe

Claim-based versus network-based identity management: a hybrid approach

This paper proposes a hybrid approach that combines claim-based and network-based identity management. Partly by virtue of the principle of separation of concerns, better security and privacy properties are attained. Overall trust is diminished, while simultaneously reducing multiple actors' exposure and value as a target of attack. The proposed architecture also facilitates interoperability and pluralism of credential technologies, authentication protocols and operators. In addition, the user has more control over his personal data than with current network-based identity management systems. A prototype demonstrates the feasibility of the proposed approach.status: publishe

SecureApps: scenarios and requirements

status: publishe

InShopnito Secure Storage Module

status: publishe

Making OpenID mobile and privacy-friendly

OpenID is a widely used single sign-on standard that allows users to access different services using the same authentication. However, its usage poses a number of issues regarding privacy and security. This paper evaluates the OpenID standard and introduces three mobile strategies, two of which are validated using a prototype implementation. Significant privacy and trust improvements are attained through the use of an identity management architecture that leverages the properties of a tamperproof module. Furthermore, our approach makes OpenID more suitable for omnipresent mobile use. We remain interoperable with the OpenID standard and no modifications to the mobile platform are required.status: publishe

MobCom: Idemix & DAA go mobile

2nd preliminary progress presentation for the MobCom user groupstatus: publishe

A keyboard that manages your passwords in Android

During the recent years, smartphones and tablets have become a fixture of daily life. They are used to run ever more tasks and services. Unfortunately, when it comes to password management, users are confronted with greater security and usability concerns than in the non-mobile world. This work presents a password manager for Android that can accommodate any app. Existing platform mechanisms are leveraged to better protect against malware and device theft, than current solutions. Our approach also provides significant usability improvements. No modifications are required to existing applications or to the mobile platform.status: publishe