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Paper 2021/424

Security Analysis of SFrame

Takanori Isobe and Ryoma Ito and Kazuhiko Minematsu

Abstract

As people become more and more privacy conscious, the need for end-to-end encryption (E2EE) has become widely recognized. We study the security of SFrame, an E2EE mechanism recently proposed to IETF for video/audio group communications over the Internet. Although a quite recent project, SFrame is going to be adopted by a number of real-world applications. We inspected the original specification of SFrame. We found a critical issue that will lead to an impersonation (forgery) attack by a malicious group member with a practical complexity. We also investigated the several publicly-available SFrame implementations, and confirmed that this issue is present in these implementations.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint. MINOR revision.
Contact author(s)
takanori isobe @ ai u-hyogo ac jp
itorym @ nict go jp
k-minematsu @ nec com
History
2022-04-26: last of 2 revisions
2021-04-06: received
See all versions
Short URL
https://ia.cr/2021/424
License
Creative Commons Attribution
CC BY
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