Entrance auf der COMPSAC 2016 / UCDAS 2016

Auf der diesjährigen 40th IEEE Computer Society International Conference on Computers, Software & Applications (COMPSAC 2016) ist das Projekt Entrance mit einer wissenschaftlichen Ausarbeitung mit dem Titel “”Please, no more GUIs!”: A user study, prototype development and evaluation on the integration of Attribute-based Encryption in a hospital environment” im Workshop 3rd International Workshop on User Centered Design and Adaptive Systems (UCDAS2016) vertreten.

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Bethencourt’s CP-ABE runs in a pNaCl application

Progress has been made on our Browser-based client.
Bethencourt’s CP-ABE implementation “cpabe” has been successfully “ported” to our portable Native Client (pNaCl) browser extension. With the help of previously ported PBC library, the ciphertext decryption runs well – provided that a appropriate secret ABE key was applied.
Next, adaptations are made in order to support further ABE schemes, such as this scheme.

WebAssembly: einheitlicher Bytecode für das Web

WebAssembly macht Fortschritte. Ein erster experimenteller Support von WebAssembly ist jetzt in der V8 JavaScript Engine (ab Version 5.1.117) verfügbar. 🙂

Weitere Links:

  • Artikel: “A WebAssembly Milestone: Experimental Support in Multiple Browsers” (By Luke Wagner): [Link]
  • WebAssembly Community Group @ W3C [Link]
  • WebAssembly’s GitHub Repo: [Link]

Entrance auf der IEEE iThings 2015

Die wissenschaftliche Ausarbeitung mit dem Titel “Applying Attribute-based Encryption on Publish Subscribe Messaging Patterns for the Internet of Things” wurde auf der 8. Internationalen IEEE Konferenz “Internet of Things” (iThings 2015) in Sydney, Australien vorgestellt.
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New Master and Bachelor thesis topics in the field of “Attribute-based Encryption”

We offer challenging tasks for motivated students. We focus on Attribute-based Encryption (public-key cryptography flavor), searchable encryption, web technologies in the context of Online Social Networks, Cloud Computing and P2P related scenarios. Herby, we combine data-centric and user-centric security concepts to enable a secure and seamless data sharing experience.

Some thesis (Master/Bachelor) topics are briefly described below:

1st. topic (Bachelor thesis):
Extend our already existing portable Native Client (pNaCl) (Browser plugin) to support Attribute-based Encryption. More precise, focus on the decryption function, which is more or less the same as described by Bethencourt et al. in CP-ABE. Implementation here.
We already ported the Pairing-based crypto library (PBC library) to pNaCl.
Required skills: interest in cryptography, web technologies, programming skills in C/C++, JavaScript, HTML

2nd. topic (Master thesis):
Extent our system (based on Liu’s ABE scheme) to support the notion of Searchable Encryption. Implement a trapdoor function and the appropriate Search function. Some [related work]. A use case would be: enable to search for specific encrypted pictures in a picture gallery based on picture tags, e.g. “vacation” or names, such as “paul”.
Required skills: interest in cryptography, programming skills in Java (server), C/C++ (client)

Get in contact with dt-mail

Webassembly: an alternative to JavaScript

Webassembly (wasm) is a new and fast binary format for webcontent. It is supported by all big browser vendors, such as Microsoft, Mozilla, Google and WebKit. Developers can write C- and C++ extensions for browsers, which will be transformed by a LLVM-backend to wasm.

Further information:
https://brendaneich.com/2015/06/from-asm-js-to-webassembly/
https://blog.mozilla.org/luke/2015/06/17/webassembly/
Documentations: https://github.com/WebAssembly

PersoApp und Sony’s Xperia Z3 compact

Der PersoApp eID Client für Android in der Rev146 ist u.a. kombatibel zum Sony Xperia Z3 compact (Modell D5803) (Android 4.4.4; Build 23.0.1.A.5.77) .

Vorkompilierte PersoApp APKs  können hier geladen: PersoApp-Rev146. (~6MB)

Ein “NXP TagInfo” Screenshots des Z3 anbei:

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