Private notes: Encrypted XML notes synchronization and sharing with untrusted web services

Paul Klingelhuber, Rene Mayrhofer

Research output: Chapter in Book/Report/Conference proceedingsConference contribution

3 Citations (Scopus)

Abstract

Personal notes, even when shared with others, often contain highly sensitive information. From a security and privacy point of view, currently available (web) services that upload such personal notes to potentially untrusted third party servers are therefore problematic and we suggest to encrypt all notes before transferring them from the user's personal device. However, synchronization and sharing of encrypted data is a non-trivial issue, because conflict resolution and merging algorithms need to be applied to plain-text content. With Private Notes, we propose an architecture for client-side encryption, merge, and conflict handling of personal notes stored in XML format. We adopt the OpenPGP standard for symmetric and asymmetric encryption and Web-DAV for synchronizing and sharing notes on arbitrary web servers. Specific implementations in the form of a plug-in for the Tomboy desktop note taking application and the Android and iOS mobile platforms demonstrate the ease of use of encrypted notes sharing.

Original languageEnglish
Title of host publicationiiWAS2011 - 13th International Conference on Information Integration and Web-Based Applications and Services
Pages254-261
Number of pages8
DOIs
Publication statusPublished - 2011
Event13th International Conference on Information Integration and Web-based Applications & Services (iiWAS2011) - Ho Chi Minh City, Viet Nam
Duration: 5 Dec 20117 Dec 2011
http://www.iiwas.org/conferences/iiwas2011

Publication series

NameACM International Conference Proceeding Series

Conference

Conference13th International Conference on Information Integration and Web-based Applications & Services (iiWAS2011)
CountryViet Nam
CityHo Chi Minh City
Period05.12.201107.12.2011
Internet address

Keywords

  • XML synchronization
  • client-based encryption
  • note taking applications

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