6TiSCH Working Group M. Richardson Internet-Draft Sandelman Software Works Intended status: Standards Track February 24, 2017 Expires: August 28, 2017 Minimal Security rekeying mechanism for 6TiSCH draft-richardson-6tisch-minimal-rekey-00 Abstract This draft describes a mechanism to rekey the networks used by 6TISCH nodes. It leverages the security association created during an enrollment protocol. The rekey mechanism permits incremental deployment of new sets of keys, followed by a rollover to a new key. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. 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Richardson Expires August 28, 2017 [Page 1] Internet-Draft 6tisch-minimal-rekey February 2017 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. An approach to rekeying . . . . . . . . . . . . . . . . . . . 2 4. A YANG model for keys . . . . . . . . . . . . . . . . . . . . 2 5. Rekey of master connection . . . . . . . . . . . . . . . . . 2 6. Privacy Considerations . . . . . . . . . . . . . . . . . . . 3 7. Security Considerations . . . . . . . . . . . . . . . . . . . 3 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 3 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 3 10.1. Normative References . . . . . . . . . . . . . . . . . . 3 10.2. Informative References . . . . . . . . . . . . . . . . . 3 Appendix A. Example . . . . . . . . . . . . . . . . . . . . . . 4 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4 1. Introduction 2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119]. These words may also appear in this document in lowercase, absent their normative meanings. The reader is expected to be familiar with the terms and concepts defined in [I-D.ietf-6tisch-terminology], [RFC7252], [I-D.ietf-core-object-security], and [I-D.ietf-anima-bootstrapping-keyinfra]. 3. An approach to rekeying TBD 4. A YANG model for keys It optionally also contains an IEEE 802.15.4 short-address [IEEE8021542015] assigned to pledge by JRC. 5. Rekey of master connection TBD Richardson Expires August 28, 2017 [Page 2] Internet-Draft 6tisch-minimal-rekey February 2017 6. Privacy Considerations TBD 7. Security Considerations TBD 8. IANA Considerations This document allocates a SID number for the YANG model. There is no IANA action required for this document. 9. Acknowledgments 10. References 10.1. Normative References [I-D.ietf-core-object-security] Selander, G., Mattsson, J., Palombini, F., and L. Seitz, "Object Security of CoAP (OSCOAP)", draft-ietf-core- object-security-01 (work in progress), December 2016. [I-D.ietf-cose-msg] Schaad, J., "CBOR Object Signing and Encryption (COSE)", draft-ietf-cose-msg-24 (work in progress), November 2016. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC7049] Bormann, C. and P. Hoffman, "Concise Binary Object Representation (CBOR)", RFC 7049, DOI 10.17487/RFC7049, October 2013, . [RFC7252] Shelby, Z., Hartke, K., and C. Bormann, "The Constrained Application Protocol (CoAP)", RFC 7252, DOI 10.17487/RFC7252, June 2014, . 10.2. Informative References [I-D.ietf-6tisch-6top-protocol] Wang, Q. and X. Vilajosana, "6top Protocol (6P)", draft- ietf-6tisch-6top-protocol-03 (work in progress), October 2016. Richardson Expires August 28, 2017 [Page 3] Internet-Draft 6tisch-minimal-rekey February 2017 [I-D.ietf-6tisch-dtsecurity-secure-join] Richardson, M., "6tisch Secure Join protocol", draft-ietf- 6tisch-dtsecurity-secure-join-00 (work in progress), December 2016. [I-D.ietf-6tisch-minimal-security] Vucinic, M., Simon, J., and K. Pister, "Minimal Security Framework for 6TiSCH", draft-ietf-6tisch-minimal- security-01 (work in progress), February 2017. [I-D.ietf-6tisch-terminology] Palattella, M., Thubert, P., Watteyne, T., and Q. Wang, "Terminology in IPv6 over the TSCH mode of IEEE 802.15.4e", draft-ietf-6tisch-terminology-08 (work in progress), December 2016. [I-D.ietf-anima-bootstrapping-keyinfra] Pritikin, M., Richardson, M., Behringer, M., Bjarnason, S., and K. Watsen, "Bootstrapping Remote Secure Key Infrastructures (BRSKI)", draft-ietf-anima-bootstrapping- keyinfra-04 (work in progress), October 2016. [IEEE8021542015] IEEE standard for Information Technology, ., "IEEE Std 802.15.4-2015 Standard for Low-Rate Wireless Personal Area Networks (WPANs)", 2015. Appendix A. Example Example COMI requests/responses. Author's Address Michael Richardson Sandelman Software Works Email: mcr+ietf@sandelman.ca Richardson Expires August 28, 2017 [Page 4]