draft-ietf-ace-coap-est-04.txt		draft-ietf-ace-coap-est-05.txt
	ACE P. van der Stok		ACE P. van der Stok
	Internet-Draft Consultant		Internet-Draft Consultant
	Intended status: Standards Track P. Kampanakis		Intended status: Standards Track P. Kampanakis
	Expires: January 3, 2019 Cisco Systems		Expires: January 19, 2019 Cisco Systems
	S. Kumar		S. Kumar
	Philips Lighting Research		Philips Lighting Research
	M. Richardson		M. Richardson
	SSW		SSW
	M. Furuhed		M. Furuhed
	Nexus Group		Nexus Group
	S. Raza		S. Raza
	RISE SICS		RISE SICS
	July 2, 2018		July 18, 2018
	EST over secure CoAP (EST-coaps)		EST over secure CoAP (EST-coaps)
	draft-ietf-ace-coap-est-04		draft-ietf-ace-coap-est-05
	Abstract		Abstract
	Enrollment over Secure Transport (EST) is used as a certificate		Enrollment over Secure Transport (EST) is used as a certificate
	provisioning protocol over HTTPS. Low-resource devices often use the		provisioning protocol over HTTPS. Low-resource devices often use the
	lightweight Constrained Application Protocol (CoAP) for message		lightweight Constrained Application Protocol (CoAP) for message
	exchanges. This document defines how to transport EST payloads over		exchanges. This document defines how to transport EST payloads over
	secure CoAP (EST-coaps), which allows low-resource constrained		secure CoAP (EST-coaps), which allows low-resource constrained
	devices to use existing EST functionality for provisioning		devices to use existing EST functionality for provisioning
	certificates.		certificates.
	skipping to change at page 1, line 45 ¶		skipping to change at page 1, line 45 ¶
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at https://datatracker.ietf.org/drafts/current/.		Drafts is at https://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on January 3, 2019.		This Internet-Draft will expire on January 19, 2019.
	Copyright Notice		Copyright Notice
	Copyright (c) 2018 IETF Trust and the persons identified as the		Copyright (c) 2018 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 2, line 48 ¶		skipping to change at page 2, line 48 ¶
	9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17		9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
	9.1. Content-Format Registry . . . . . . . . . . . . . . . . . 17		9.1. Content-Format Registry . . . . . . . . . . . . . . . . . 17
	9.2. Resource Type registry . . . . . . . . . . . . . . . . . 18		9.2. Resource Type registry . . . . . . . . . . . . . . . . . 18
	10. Security Considerations . . . . . . . . . . . . . . . . . . . 18		10. Security Considerations . . . . . . . . . . . . . . . . . . . 18
	10.1. EST server considerations . . . . . . . . . . . . . . . 18		10.1. EST server considerations . . . . . . . . . . . . . . . 18
	10.2. HTTPS-CoAPS Registrar considerations . . . . . . . . . . 19		10.2. HTTPS-CoAPS Registrar considerations . . . . . . . . . . 19
	11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 20		11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 20
	12. Change Log . . . . . . . . . . . . . . . . . . . . . . . . . 20		12. Change Log . . . . . . . . . . . . . . . . . . . . . . . . . 20
	13. References . . . . . . . . . . . . . . . . . . . . . . . . . 21		13. References . . . . . . . . . . . . . . . . . . . . . . . . . 21
	13.1. Normative References . . . . . . . . . . . . . . . . . . 21		13.1. Normative References . . . . . . . . . . . . . . . . . . 21
	13.2. Informative References . . . . . . . . . . . . . . . . . 23		13.2. Informative References . . . . . . . . . . . . . . . . . 22
	Appendix A. EST messages to EST-coaps . . . . . . . . . . . . . 24		Appendix A. EST messages to EST-coaps . . . . . . . . . . . . . 24
	A.1. cacerts . . . . . . . . . . . . . . . . . . . . . . . . . 25		A.1. cacerts . . . . . . . . . . . . . . . . . . . . . . . . . 25
	A.2. csrattrs . . . . . . . . . . . . . . . . . . . . . . . . 29		A.2. csrattrs . . . . . . . . . . . . . . . . . . . . . . . . 29
	A.3. enroll / reenroll . . . . . . . . . . . . . . . . . . . . 29		A.3. enroll / reenroll . . . . . . . . . . . . . . . . . . . . 29
	A.4. serverkeygen . . . . . . . . . . . . . . . . . . . . . . 32		A.4. serverkeygen . . . . . . . . . . . . . . . . . . . . . . 32
	Appendix B. EST-coaps Block message examples . . . . . . . . . . 34		Appendix B. EST-coaps Block message examples . . . . . . . . . . 34
	B.1. cacerts block example . . . . . . . . . . . . . . . . . . 34		B.1. cacerts block example . . . . . . . . . . . . . . . . . . 34
	B.2. enroll block example . . . . . . . . . . . . . . . . . . 37		B.2. enroll block example . . . . . . . . . . . . . . . . . . 37
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 38		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 38
	skipping to change at page 18, line 5 ¶		skipping to change at page 18, line 5 ¶
	9. IANA Considerations		9. IANA Considerations
	9.1. Content-Format Registry		9.1. Content-Format Registry
	Additions to the sub-registry "CoAP Content-Formats", within the		Additions to the sub-registry "CoAP Content-Formats", within the
	"CoRE Parameters" registry are specified in Table 2. These can be		"CoRE Parameters" registry are specified in Table 2. These can be
	registered either in the Expert Review range (0-255) or IETF Review		registered either in the Expert Review range (0-255) or IETF Review
	range (256-9999).		range (256-9999).
	+-------------------------+--------+-----+--------------------------+		+-----------------------------------+----------+------+-------------+
	| Media type | Encodi | ID | Reference |		| Media type | Encoding | ID | Reference |
	| | ng | | |		+-----------------------------------+----------+------+-------------+
	+-------------------------+--------+-----+--------------------------+		| application/pkcs7-mime; smime- | - | TBD1 | [RFC5751] |
	| application/pkcs7-mime; | - | TBD | [RFC5751] [RFC7030] |		| type=server-generated-key | | | [RFC7030] |
	| smime-type=server- | | 1 | |		| application/pkcs7-mime; smime- | - | TBD2 | [RFC5751] |
	| generated-key | | | |		| type=certs-only | | | |
	| application/pkcs7-mime; | - | TBD | [RFC5751] |		| application/pkcs7-mime; smime- | - | TBD3 | [RFC5751] |
	| smime-type=certs-only | | 2 | |		| type=CMC-request | | | [RFC5273] |
	| application/pkcs7-mime; | - | TBD | [RFC5751] [RFC5273] |		| application/pkcs7-mime; smime- | - | TBD4 | [RFC5751] |
	| smime-type=CMC-request | | 3 | |		| type=CMC-response | | | [RFC5273] |
	| application/pkcs7-mime; | - | TBD | [RFC5751] [RFC5273] |		| application/pkcs8 | - | TBD5 | [RFC5751] |
	| smime-type=CMC-response | | 4 | |		| | | | [RFC5958] |
	| application/pkcs8 | - | TBD | [RFC5751] [RFC5958] |		| application/csrattrs | - | TBD6 | [RFC7030] |
	| | | 5 | |		| | | | [RFC7231] |
	| application/csrattrs | - | TBD | [RFC7030] [RFC7231] |		| application/pkcs10 | - | TBD7 | [RFC5751] |
	| | | 6 | |		| | | | [RFC5967] |
	| application/pkcs10 | - | TBD | [RFC5751] [RFC5967] |		+-----------------------------------+----------+------+-------------+
	| | | 7 | |
	| application/multipart- | - | TBD | [I-D.fossati-core-multip |
	| core | | 8 | art-ct] |
	+-------------------------+--------+-----+--------------------------+
	Table 2: New CoAP Content-Formats		Table 2: New CoAP Content-Formats
	9.2. Resource Type registry		9.2. Resource Type registry
	Additions to the sub-registry "CoAP Resource Type", within the "CoRE		Additions to the sub-registry "CoAP Resource Type", within the "CoRE
	Parameters" registry are needed for a new resource type.		Parameters" registry are needed for a new resource type.
	o rt="ace.est" needs registration with IANA.		o rt="ace.est" needs registration with IANA.
	skipping to change at page 20, line 38 ¶		skipping to change at page 20, line 36 ¶
	Dijk and Michael Verschoor for the valuable discussions that helped		Dijk and Michael Verschoor for the valuable discussions that helped
	in shaping the solution. They would also like to thank Peter		in shaping the solution. They would also like to thank Peter
	Panburana for his feedback on technical details of the solution.		Panburana for his feedback on technical details of the solution.
	Constructive comments were received from Benjamin Kaduk, Eliot Lear,		Constructive comments were received from Benjamin Kaduk, Eliot Lear,
	Jim Schaad, Hannes Tschofenig, Julien Vermillard, and John Manuel.		Jim Schaad, Hannes Tschofenig, Julien Vermillard, and John Manuel.
	12. Change Log		12. Change Log
	-04:		-04:
	Updated Delayed response section to reflect short and long delay		TBD8 removed from C-F registration, to be done CT draft
	options.
	-03:		-03:
	Removed observe and simplified long waits		Removed observe and simplified long waits
	Repaired content-format specification		Repaired content-format specification
	-02:		-02:
	Added parameter discussion in section 8		Added parameter discussion in section 8
End of changes. 7 change blocks.
	29 lines changed or deleted		24 lines changed or added
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