Deniable group communications in the presence of global unlimited adversary
Prikladnaâ diskretnaâ matematika, no. 2 (2018), pp. 72-86

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With this paper, we provide our research into the problem of secure communications in the presence of a global unlimited adversary. As a solution, we propose to use decentralised deniable communications. We have made use of our existing multi-party Off-the-Record protocol's modification which is able to function over decentralised transport. Its Perfect Forward Secrecy (PFS) features were improved by adding Key Ratcheting procedure to the protocol's flow. As a result, we propose a fully decentralised cryptosystem which has deniability and transcript consistency features, improved PFS and ability to resist the Sybil attack. We also give a detailed overview of the protocol model implementation in JavaScript designed to function in conditions of centralized server's absence.
Keywords: secure communications, decentralised communications, deniability.
@article{PDM_2018_2_a5,
     author = {V. F. Sheidaev and D. Y. Gamayunov},
     title = {Deniable group communications in the presence of global unlimited adversary},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {72--86},
     publisher = {mathdoc},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2018_2_a5/}
}
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V. F. Sheidaev; D. Y. Gamayunov. Deniable group communications in the presence of global unlimited adversary. Prikladnaâ diskretnaâ matematika, no. 2 (2018), pp. 72-86. http://geodesic.mathdoc.fr/item/PDM_2018_2_a5/