Concept
Non-répudiation
Publications associées (20)
Extractable Witness Encryption for the Homogeneous Linear Equations Problem
Serge Vaudenay, Bénédikt Minh Dang Tran
Witness encryption is a cryptographic primitive which encrypts a message under an instance of an NP language and decrypts the ciphertext using a witness associated with that instance. In the current state of the art, most of the witness encryption construc ...
Springer2023A Use Case Oriented Survey of Self-Sovereign Identity
With self-sovereign identity (SSI), we stand at a crossroads that is leading society to a new kind of digital identity. Under this new paradigm, users no longer have to remember a username and a password; instead they gain full power on the information tha ...
2022Time 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 ...
EPFL2020ClaimChain: 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 ...
ACM2018Short Undeniable Signatures Based on Group Homomorphisms
This paper is devoted to the design and analysis of short undeniable signatures based on a random oracle. Exploiting their online property, we can achieve signatures with a fully scalable size depending on the security level. To this end, we develop a gene ...
Springer Verlag2011