Publications associées à Chiffrement du courrier électronique

Authenticated private information retrieval

Bryan Alexander Ford, Simone Maria Stefano Colombo, Henry Nathaniel Corrigan-Gibbs, Kirill Nikitin

This paper introduces protocols for authenticated private information retrieval. These schemes enable a client to fetch a record from a remote database server such that (a) the server does not learn which record the client reads, and (b) the client either ...

Berkeley2023

Moby: A Blackout-Resistant Anonymity Network for Mobile Devices

Bryan Alexander Ford, Antoine Rault, Amogh Pradeep, Hira Javaid

Internet blackouts are challenging environments for anonymity and censorship resistance. Existing popular anonymity networks (e.g., Freenet, I2P, Tor) rely on Internet connectivity to function, making them impracticable during such blackouts. In such a set ...

2022

Verifiable Encodings for Secure Homomorphic Analytics

Jean-Pierre Hubaux, Sylvain Chatel, Apostolos Pyrgelis, Christian Louis Knabenhans

Homomorphic encryption, which enables the execution of arithmetic operations directly on ciphertexts, is a promising solution for protecting privacy of cloud-delegated computations on sensitive data. However, the correctness of the computation result is no ...

2022

Crypt4GH: a file format standard enabling native access to encrypted data

Juan Ramón Troncoso-Pastoriza

Motivation: The majority of genome analysis tools and pipelines require data to be decrypted for access. This potentially leaves sensitive genetic data exposed, either because the unencrypted data is not removed after analysis, or because the data leaves t ...

OXFORD UNIV PRESS2021

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

Methods and systems for secure data exchange

Bryan Alexander Ford, Linus Gasser, Eleftherios Kokoris Kogias

The present invention concerns a computer-implemented method for secure data exchange between a sender (A) and a recipient (B), wherein the method is performed by the sender (A) and comprises encrypting data using a symmetric key k, creating a write transa ...

2019

ClaimChain: Improving the Security and Privacy of In-band Key Distribution for Messaging

Carmela González Troncoso, Bogdan Kulynych, Wouter Lueks

The social demand for email end-to-end encryption is barely supported by mainstream service providers. Autocrypt is a new community -driven open specification for e-mail encryption that attempts to respond to this demand. In Autocrypt the encryption keys a ...

ACM2018

Oblivious Dynamic Searchable Encryption on Distributed Cloud Systems

Fatma Betül Durak

Dynamic Searchable Symmetric Encryption (DSSE) allows search/update operations over encrypted data via an encrypted index. However, DSSE has been shown to be vulnerable to statistical inference attacks, which can extract a significant amount of information ...

SPRINGER INTERNATIONAL PUBLISHING AG2018

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Chiffrement du courrier électronique

Authenticated private information retrieval

Moby: A Blackout-Resistant Anonymity Network for Mobile Devices

Verifiable Encodings for Secure Homomorphic Analytics

Analyzing and Protecting Communication Metadata

Crypt4GH: a file format standard enabling native access to encrypted data

Integrity and Metadata Protection in Data Retrieval

Reducing Metadata Leakage from Encrypted Files and Communication with PURBs

Methods and systems for secure data exchange

ClaimChain: Improving the Security and Privacy of In-band Key Distribution for Messaging

Oblivious Dynamic Searchable Encryption on Distributed Cloud Systems

Graph Chatbot

Chattez avec Graph Search

Analyzing and Protecting Communication Metadata

Reducing Metadata Leakage from Encrypted Files and Communication with PURBs

Crypt4GH: a file format standard enabling native access to encrypted data

Authenticated private information retrieval

Integrity and Metadata Protection in Data Retrieval

Verifiable Encodings for Secure Homomorphic Analytics

Oblivious Dynamic Searchable Encryption on Distributed Cloud Systems

Moby: A Blackout-Resistant Anonymity Network for Mobile Devices

ClaimChain: Improving the Security and Privacy of In-band Key Distribution for Messaging

Methods and systems for secure data exchange