Publication: Post-Quantum Security of Messaging Protocols: Analysis of Double Ratcheting Algorithm
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2020
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© 2020 IEEE.Development in the area of quantum technologies led to the appearance of first quantum computers. The threat of using a quantum computer for cryptanalysis requires wide implementing post-quantum security in computing algorithms and communication protocols. We evaluate the computational power of some existing quantum computers to illustrate the relevance of research in post-quantum security. One of the best ways to test post-quantum protocols is to embed them into some non-critical but widely-used sphere. Secure messaging is an excellent example of such an application. In the paper, we analyze the post-quantum security of well-known messaging specification Signal, which is considered to have high-security properties. The core of Signal specification is the Double Ratchet protocol. We notice and explain why it is not a post-quantum secure scheme. After that, we suggest some possible ways to improve the security features of Signal specification.
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Bobrysheva, J. Post-Quantum Security of Messaging Protocols: Analysis of Double Ratcheting Algorithm / Bobrysheva, J., Zapechnikov, S. // Proceedings of the 2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering, EIConRus 2020. - 2020. - P. 2041-2044. - 10.1109/EIConRus49466.2020.9039075