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Publications associées (7)

Time in cryptography

Time travel has always been a fascinating topic in literature and physics. In cryptography, one may wonder how to keep data confidential for some time. In this dissertation, we will study how to make private information travel to the future. This dissertat ...

EPFL2020

Compact Circuits for Combined AES Encryption/Decryption

Subhadeep Banik

The implementation of the AES encryption core by Moradi et al. at Eurocrypt 2011 is one of the smallest in terms of gate area. The circuit takes around 2400 gates and operates on an 8 bit datapath. However this is an encryption only core and unable to cate ...

2019

Reducing Metadata Leakage from Encrypted Files and Communication with PURBs

Jean-Pierre Hubaux, Bryan Alexander Ford, Ludovic Barman, Kirill Nikitin, Wouter Lueks, Matthew Joshua Underwood

Most encrypted data formats leak metadata via their plaintext headers, such as format version, encryption schemes used, number of recipients who can decrypt the data, and even the recipients’ identities. This leakage can pose security and privacy risks to ...

Sciendo2019

Personal Learning with Social Media

Na Li

Social media platforms are increasingly used in recent years to support learning activities, especially for the construction of activity- and learner-centric personal learning environments (PLEs). This thesis investigates the solutions to four essential de ...

EPFL2015

A Lightweight Cryptographic System for Implantable Biosensors

Giovanni De Micheli, Sandro Carrara, Seyedeh Sara Ghoreishizadeh, Wayne Burleson, Tolga Yalçin

This paper presents a lightweight cryptographic system integrated onto a multi-function implantable biosensor prototype. The resulting heterogeneous system provides a unique and fundamental capability by immediately encrypting and signing the sensor data u ...

2014

Cryptanalysis of Bluetooth Keystream Generator Two-level E0

Serge Vaudenay, Yi Lu

In this paper, we carefully study both distinguishing and key-recovery attacks against Bluetooth two-level EO given many short frames. Based on a flaw in the resynchronization of Bluetooth EO, we are able to fully exploit the largest bias of the finite sta ...

2005

Faster correlation attack on Bluetooth keystream generator E0

Serge Vaudenay, Yi Lu

We study both distinguishing and key-recovery attacks against E0, the keystream generator used in Bluetooth by means of correlation. First, a powerful computation method of correlations is formulated by a recursive expression, which makes it easier to calc ...

2004

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