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    chrysn (chrysn@chaos.social)'s status on Thursday, 21-Mar-2024 19:43:48 JSTchrysnchrysn

    EDHOC, the lightweight key exchange for #IoT devices, is now published as #RFC 9528. It enables state of the art elliptic curve based security after exchanging 3 messages of only a bit over 100 bytes in total, thus fitting in even the lowest power networks such as #6LoWPAN and #LoRA.
    Thanks and congratulations to Göran, John and Francesca for making security more affordable.
    https://www.rfc-editor.org/rfc/rfc9528.html

    In conversationabout 8 months ago from chaos.socialpermalink

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      RFC 9528: Ephemeral Diffie-Hellman Over COSE (EDHOC)
      from Francesca Palombini
      This document specifies Ephemeral Diffie-Hellman Over COSE (EDHOC), a very compact and lightweight authenticated Diffie-Hellman key exchange with ephemeral keys. EDHOC provides mutual authentication, forward secrecy, and identity protection. EDHOC is intended for usage in constrained scenarios, and a main use case is to establish an Object Security for Constrained RESTful Environments (OSCORE) security context. By reusing CBOR Object Signing and Encryption (COSE) for cryptography, Concise Binary Object Representation (CBOR) for encoding, and Constrained Application Protocol (CoAP) for transport, the additional code size can be kept very low.
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