Multi-Device for Signal
| Autor: | Céline Duguey, Julien Devigne, Sébastien Campion, Pierre-Alain Fouque |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
050101 languages & linguistics
Computer science business.industry 05 social sciences SIGNAL (programming language) Usability Cryptography 02 engineering and technology Computer security model Device Usage Multi device 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing 0501 psychology and cognitive sciences business Protocol (object-oriented programming) Key exchange Computer network |
| Zdroj: | Applied Cryptography and Network Security ISBN: 9783030578770 ACNS (2) |
| DOI: | 10.1007/978-3-030-57878-7_9 |
| Popis: | Nowadays, we spend our life juggling with many devices such as smartphones, tablets or laptops, and we expect to easily and efficiently switch between them without losing time or security. However, most applications have been designed for single device usage. This is the case for secure instant messaging (SIM) services based on the Signal protocol, that implements the Double Ratchet key exchange algorithm. While some adaptations, like the Sesame protocol released by the developers of Signal, have been proposed to fix this usability issue, they have not been designed as specific multi-device solutions and no security model has been formally defined either. In addition, even though the group key exchange problematic appears related to the multi-device case, group solutions are too generic and do not take into account some properties of the multi-device setting. Indeed, the fact that all devices belong to a single user can be exploited to build more efficient solutions. |
| Databáze: | OpenAIRE |
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