anima Working Group M. Richardson Internet-Draft Sandelman Software Works Updates: RFC8366 (if approved) T. Werner Intended status: Standards Track Siemens AG Expires: 5 September 2022 4 March 2022 JWS signed Voucher Artifacts for Bootstrapping Protocols draft-ietf-anima-jws-voucher-02 Abstract RFC8366 defines a digital artifact called voucher as a YANG-defined JSON document that has been signed using a Cryptographic Message Syntax (CMS) structure. This memo introduces a variant of the voucher structure in which CMS is replaced by the JSON Object Signing and Encryption (JOSE) mechanism described in RFC7515 to better support use-cases in which JOSE is preferred over CMS. In addition to explaining how the format is created, MIME types are registered and examples are provided. 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 https://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on 5 September 2022. Copyright Notice Copyright (c) 2022 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/ license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights Richardson & Werner Expires 5 September 2022 [Page 1] Internet-Draft JWS-voucher March 2022 and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. JSON Web Signatures - General JWS JSON Serialization Syntax . . . . . . . . . . . . . . . . . . . . . . . . . 3 3.1. Unprotected Header . . . . . . . . . . . . . . . . . . . 4 3.2. Protected Header . . . . . . . . . . . . . . . . . . . . 4 3.3. Voucher Representation in General JWS JSON Serialization Syntax . . . . . . . . . . . . . . . . . . . . . . . . . 4 4. Privacy Considerations . . . . . . . . . . . . . . . . . . . 5 5. Security Considerations . . . . . . . . . . . . . . . . . . . 5 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5 6.1. Media-Type Registry . . . . . . . . . . . . . . . . . . . 6 6.1.1. application/voucher-jws+json . . . . . . . . . . . . 6 7. Changelog . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8. References . . . . . . . . . . . . . . . . . . . . . . . . . 7 8.1. Normative References . . . . . . . . . . . . . . . . . . 7 8.2. Informative References . . . . . . . . . . . . . . . . . 7 Appendix A. Examples . . . . . . . . . . . . . . . . . . . . . . 9 A.1. Example Pledge Voucher Request - PVR (from Pledge to Registrar) . . . . . . . . . . . . . . . . . . . . . . . 9 A.2. Example Parboiled Registrar Voucher Request - RVR (from Registrar to MASA) . . . . . . . . . . . . . . . . . . . 10 A.3. Example Voucher Response (from MASA to Pledge, via Registrar) . . . . . . . . . . . . . . . . . . . . . . . 12 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 13 1. Introduction "A Voucher Artifact for Bootstrapping Protocols", [RFC8366] describes a voucher artifact used in "Bootstrapping Remote Secure Key Infrastructure" [BRSKI] and "Secure Zero Touch Provisioning" [SZTP] to transfer ownership of a device from a manufacturer to an owner. That document defines the base YANG module, and also the initial serialization to JSON [RFC8259], with a signature provided by [RFC5652]. Other work, [I-D.ietf-anima-constrained-voucher] provides a mapping of the YANG to CBOR [RFC8949] with a signature format of COSE [RFC8812]. Richardson & Werner Expires 5 September 2022 [Page 2] Internet-Draft JWS-voucher March 2022 This document provides an equivalent mapping of JSON format with the signature format as JSON Web Signature (JWS) [RFC7515]. The encoding specified in this document is required for [I-D.ietf-anima-brski-prm] and may be required and/or preferred in other use cases, for example when JWS is already used in other parts of the use case, but CMS is not. This document does not extend the YANG definition of [RFC8366] at all, but accepts that other efforts such as [I-D.richardson-anima-voucher-delegation], [I-D.friel-anima-brski-cloud], and [I-D.ietf-anima-brski-prm] do. This document supports signing any of the extended schemas defined in those documents and any new documents that may appear after this one. With the availability of different encoded vouchers, it is up to an industry specific application statement to indicate/decide which voucher signature format is to be used. There is no provision across the different voucher signature formats that a receiver could safely recognize which format it uses unless additional context is provided. For example, [BRSKI] provides this context via the MIME-Type for the voucher payload. This document should be considered an Update to [RFC8366] in the category of "See Also" as per [I-D.kuehlewind-update-tag]. 2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here. 3. JSON Web Signatures - General JWS JSON Serialization Syntax [RFC Editor: please delete] /* TODO: ... */ [RFC7515] defines two serializations: the "JWS Compact Serialization" and the "JWS JSON Serialization". The [RFC8366] JSON structure consists of a nested map, the outer part of which is: { "ietf-voucher:voucher" : { some inner items }} this is considered the JSON payload as described in [RFC7515] section 3. Richardson & Werner Expires 5 September 2022 [Page 3] Internet-Draft JWS-voucher March 2022 A JWS JSON Serialization Overview is given by [RFC7515] in section 3.2 and section 7.2.1 provides more details. It works out to: [RFC Editor: please delete] /* TODO: ... */ There are a number of attributes. They are: 3.1. Unprotected Header [RFC Editor: please delete] /* TODO: ... */ 3.2. Protected Header The standard "typ" and "alg" values described in [RFC7515] are expected in the protected headers. It remains to be determined (XXX), what values, if any, should go into the "typ" header, as in the [BRSKI] use cases, there are additional HTTP MIME type headers to indicate content types. The "alg" should contain the algorithm type such as "ES256". If PKIX [RFC5280] format certificates are used then the [RFC7515] section 4.1.6 "x5c" certificate chain SHOULD be used to contain the certificate and chain. Vouchers will often need all certificates in the chain, including what would be considered the trust anchor certificate because intermediate devices (such as the Registrar) may need to audit the artifact, or end systems may need to pin a trust anchor for future operations. This is consistent with [BRSKI] section 5.5.2. 3.3. Voucher Representation in General JWS JSON Serialization Syntax Richardson & Werner Expires 5 September 2022 [Page 4] Internet-Draft JWS-voucher March 2022 { "payload": { "ietf-voucher:voucher": { "assertion": "logged", "serial-number": "0123456789", "nonce": "5742698422680472", "created-on": "2022-03-02T03:01:24.618Z", "pinned-domain-cert": "base64encodedvalue==" }, "signatures": [ { "protected": { "x5c": [ "base64encodedvalue==" ], "alg": "ES256" }, "signature": "base64encodedvalue==" } ] } } Figure 1: Voucher Representation in General JWS JSON Serialization Syntax 4. Privacy Considerations The Voucher Request reveals the IDevID of the component (Pledge) that is on-boarding. This request occurs over HTTP-over-TLS, however the Pledge to Registrar transaction is over a provisional TLS session, and it is subject to disclosure via by a Dolev-Yao attacker (a "malicious messenger")[onpath]. This is explained in [BRSKI] section 10.2. The use of a JWS header brings no new privacy considerations. 5. Security Considerations The issues of how [RFC8366] vouchers are used in a [BRSKI] system is addressed in section 11 of that document. This document does not change any of those issues, it just changes the signature technology used for vouchers and voucher requests. [SZTP] section 9 deals with voucher use in Secure Zero Touch Provisioning, and this document also makes no changes to security. 6. IANA Considerations Richardson & Werner Expires 5 September 2022 [Page 5] Internet-Draft JWS-voucher March 2022 6.1. Media-Type Registry This section registers the 'application/voucher-jws+json' in the "Media Types" registry. 6.1.1. application/voucher-jws+json Type name: application Subtype name: voucher-jws+json Required parameters: none Optional parameters: none Encoding considerations: JWS+JSON vouchers are JOSE objects signed with one signer. Security considerations: See Security Considerations, Section Interoperability considerations: The format is designed to be broadly interoperable. Published specification: THIS RFC. Applications that use this media type: ANIMA, 6tisch, and other zero-touch imprinting systems Additional information: Magic number(s): None File extension(s): .vjj Macintosh file type code(s): none Person & email address to contact for further information: IETF ANIMA WG Intended usage: LIMITED Restrictions on usage: NONE Author: ANIMA WG Change controller: IETF Provisional registration? (standards tree only): NO 7. Changelog * Added adoption call comments from Toerless. Changed from [RFCxxxx] to [THING] style for some key references. * Updated references "I-D.ietf-anima-brski-async-enroll" switched to "I-D.ietf-anima-brski-prm" * Switch from "JWS Compact Serialization" to "General JWS JSON Serialization", as focus is now on "General JWS JSON Serialization" * Include Voucher representation in "General JWS JSON Serialization" syntax * Include examples A1, A2, A3 using "General JWS JSON Serialization" Richardson & Werner Expires 5 September 2022 [Page 6] Internet-Draft JWS-voucher March 2022 8. References 8.1. Normative References [BRSKI] Pritikin, M., Richardson, M., Eckert, T., Behringer, M., and K. Watsen, "Bootstrapping Remote Secure Key Infrastructure (BRSKI)", RFC 8995, DOI 10.17487/RFC8995, May 2021, . [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC7515] Jones, M., Bradley, J., and N. Sakimura, "JSON Web Signature (JWS)", RFC 7515, DOI 10.17487/RFC7515, May 2015, . [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, May 2017, . [RFC8259] Bray, T., Ed., "The JavaScript Object Notation (JSON) Data Interchange Format", STD 90, RFC 8259, DOI 10.17487/RFC8259, December 2017, . [RFC8366] Watsen, K., Richardson, M., Pritikin, M., and T. Eckert, "A Voucher Artifact for Bootstrapping Protocols", RFC 8366, DOI 10.17487/RFC8366, May 2018, . [SZTP] Watsen, K., Farrer, I., and M. Abrahamsson, "Secure Zero Touch Provisioning (SZTP)", RFC 8572, DOI 10.17487/RFC8572, April 2019, . 8.2. Informative References [I-D.friel-anima-brski-cloud] Friel, O., Shekh-Yusef, R., and M. Richardson, "BRSKI Cloud Registrar", Work in Progress, Internet-Draft, draft- friel-anima-brski-cloud-04, 6 April 2021, . Richardson & Werner Expires 5 September 2022 [Page 7] Internet-Draft JWS-voucher March 2022 [I-D.ietf-anima-brski-prm] Fries, S., Werner, T., Lear, E., and M. C. Richardson, "BRSKI with Pledge in Responder Mode (BRSKI-PRM)", Work in Progress, Internet-Draft, draft-ietf-anima-brski-prm-01, 11 February 2022, . [I-D.ietf-anima-constrained-voucher] Richardson, M., Stok, P. V. D., Kampanakis, P., and E. Dijk, "Constrained Bootstrapping Remote Secure Key Infrastructure (BRSKI)", Work in Progress, Internet-Draft, draft-ietf-anima-constrained-voucher-16, 14 February 2022, . [I-D.kuehlewind-update-tag] Kuehlewind, M. and S. Krishnan, "Definition of new tags for relations between RFCs", Work in Progress, Internet- Draft, draft-kuehlewind-update-tag-04, 12 July 2021, . [I-D.richardson-anima-voucher-delegation] Richardson, M. and W. Pan, "Delegated Authority for Bootstrap Voucher Artifacts", Work in Progress, Internet- Draft, draft-richardson-anima-voucher-delegation-03, 22 March 2021, . [onpath] "can an on-path attacker drop traffic?", n.d., . [RFC5280] Cooper, D., Santesson, S., Farrell, S., Boeyen, S., Housley, R., and W. Polk, "Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile", RFC 5280, DOI 10.17487/RFC5280, May 2008, . [RFC5652] Housley, R., "Cryptographic Message Syntax (CMS)", STD 70, RFC 5652, DOI 10.17487/RFC5652, September 2009, . [RFC8792] Watsen, K., Auerswald, E., Farrel, A., and Q. Wu, "Handling Long Lines in Content of Internet-Drafts and RFCs", RFC 8792, DOI 10.17487/RFC8792, June 2020, . Richardson & Werner Expires 5 September 2022 [Page 8] Internet-Draft JWS-voucher March 2022 [RFC8812] Jones, M., "CBOR Object Signing and Encryption (COSE) and JSON Object Signing and Encryption (JOSE) Registrations for Web Authentication (WebAuthn) Algorithms", RFC 8812, DOI 10.17487/RFC8812, August 2020, . [RFC8949] Bormann, C. and P. Hoffman, "Concise Binary Object Representation (CBOR)", STD 94, RFC 8949, DOI 10.17487/RFC8949, December 2020, . Appendix A. Examples These examples are folded according to [RFC8792] Single Backslash rule. A.1. Example Pledge Voucher Request - PVR (from Pledge to Registrar) The following is an example request sent from a Pledge to the Registrar, in "General JWS JSON Serialization". Richardson & Werner Expires 5 September 2022 [Page 9] Internet-Draft JWS-voucher March 2022 { "payload": "eyJpZXRmLXZvdWNoZXItcmVxdWVzdDp2b3VjaGVyIjp7ImNyZWF0ZWQ tb24iOiIyMDE5LTAyLTE4VDA3OjM5OjAzLjAwMFoiLCJub25jZSI6IjU 3NDI2OTg0MjI2ODA0NzIifX0", "signatures":[ { "protected": "eyJhbGciOiJFUzI1NiIsIng1YyI6WyJNSUlCMmpDQ0FZQ2dBd0lCQWd JR0FXZWdkY1NMTUFvR0NDcUdTTTQ5QkFNQ01EMHhDekFKQmdOVkJBWVR Ba0ZSTVJVd0V3WURWUVFLREF4S2FXNW5TbWx1WjBOdmNuQXhGekFWQmd OVkJBTU1Ea3BwYm1kS2FXNW5WR1Z6ZEVOQk1DQVhEVEU0TVRJeE1qQXp NamcxTVZvWUR6azVPVGt4TWpNeE1qTTFPVFU1V2pCU01Rc3dDUVlEVlF RR0V3SkJVVEVWTUJNR0ExVUVDZ3dNU21sdVowcHBibWREYjNKd01STXd FUVlEVlFRRkV3b3dNVEl6TkRVMk56ZzVNUmN3RlFZRFZRUUREQTVLYVc 1blNtbHVaMFJsZG1salpUQlpNQk1HQnlxR1NNNDlBZ0VHQ0NxR1NNNDl Bd0VIQTBJQUJNVkdHOFo1cGpmNWpYbnlyVXJYeVoxa1BncUJlM05YdTF kVEFEZStyL3Y2SnpJSGwzNTVJZ2NIQzNheHBpYnFKTS9iV1JhRXlqcWN DSmo0akprb3dDdWpWVEJUTUN3R0NTc0dBUVFCZ3U1U0FnUWZEQjF0WVh OaExYUmxjM1F1YzJsbGJXVnVjeTFpZEM1dVpYUTZPVFEwTXpBVEJnTlZ IU1VFRERBS0JnZ3JCZ0VGQlFjREFqQU9CZ05WSFE4QkFmOEVCQU1DQjR Bd0NnWUlLb1pJemowRUF3SURTQUF3UlFJZ1d0UHpJSVhZMml4UlhKdEV 4S0VoaFpkYTRYK0VwbFpvbUVJMnpBMGRzam9DSVFDM0pwUW1SWE1Hbi9 wNEJ1OWl6aWk5MmVjbFR4NC9PNHJsbTdNeUxxa2hkQT09Il19", "signature": "xURZmcWSFaBD2cNkr37azT9osWfzTZ_veCsVho3fwdD6NR4ghL61VJm Y_ra0a42SvoW2Tu4XlldzzD8VDtCCDg" } ] } A.2. Example Parboiled Registrar Voucher Request - RVR (from Registrar to MASA) The term parboiled refers to food which is partially cooked. In [BRSKI], the term refers to a Pledge voucher-request (PVR) which has been received by the Registrar, and then has been processed by the Registrar ("cooked"), and is now being forwarded to the MASA. The following is an example Registrar voucher-request (RVR) sent from the Registrar to the MASA, in "General JWS JSON Serialization". Note that the previous PVR can be seen in the payload as "prior-signed- voucher-request". Richardson & Werner Expires 5 September 2022 [Page 10] Internet-Draft JWS-voucher March 2022 { "payload": "eyJpZXRmLXZvdWNoZXItcmVxdWVzdDp2b3VjaGVyIjp7InNlcmlhbC1 udW1iZXIiOiIwMTIzNDU2Nzg5Iiwibm9uY2UiOiI1NzQyNjk4NDIyNjg wNDcyIiwicHJpb3Itc2lnbmVkLXZvdWNoZXItcmVxdWVzdCI6ImV5Snd ZWGxzYjJGa0lqb2laWGxLY0ZwWVVtMU1XRnAyWkZkT2IxcFlTWFJqYlZ aNFpGZFdlbVJFY0RKaU0xWnFZVWRXZVVscWNEZEpiVTU1V2xkR01GcFh VWFJpTWpScFQybEplVTFFUlRWTVZFRjVURlJGTkZaRVFUTlBhazAxVDJ wQmVreHFRWGROUm05cFRFTktkV0l5TldwYVUwazJTV3BWTTA1RVNUSlB WR2N3VFdwSk1rOUVRVEJPZWtscFpsZ3dJaXdpYzJsbmJtRjBkWEpsY3l JNlczc2ljSEp2ZEdWamRHVmtJam9pWlhsS2FHSkhZMmxQYVVwR1ZYcEp NVTVwU1hOSmJtY3hXWGxKTmxkNVNrNVRWV3hEVFcxd1JGRXdSbHBSTW1 SQ1pEQnNRMUZYWkVwU01FWllXbGRrYTFreFRrMVVWVVoyVWpCT1JHTlZ aRlJVVkZFMVVXdEdUbEV3TVVWTlNHaEVaV3RHUzFGdFpFOVdhMHBDVjF aU1FtRXdXbE5VVmtwV1pEQldNMWRWVWxkVlZrWk1Va1ZHTkZNeVJsaE9 WelZVWWxkNE1WZHFRazlrYlU1MVVWaG9SMlZyUmxkUmJXUlBWbXRLUWx SVk1VVmhNMEozV1cweGExTXlSbGhPVnpWWFVqRmFObHBGVms5UmF6RkV VVlpvUlZaRlZUQlVWbEpLWlVVeGNWRlljRTVoYldONFZGWmFkbGRWVWp aaGVsWlFWa2QwTkZSWGNFNWxSVEZ4VkZSR1VGWkdWVEZXTW5CRFZUQXh VbU16WkVSVlZteEZWbXhHVWxJd1ZqTlRhMHBXVmtWV1YxUlZTazVTTUV WNFZsVldSRm96WkU1Vk1qRnpaRlp2ZDJOSVFtbGlWMUpGV1dwT1MyUXd NVk5VV0dSR1ZWWnNSVlpzUmxKU2ExWXpZak5rVGxaRmJEWlVhMUpXVFd zMU5scDZWazVWYlU0elVteEdXbEpHV2xKVlZWSkZVVlJXVEZsV1l6Rml iRTUwWWtoV1lVMUdTbk5hUnpGellXeHdWVkZzY0U1UmF6RklVVzVzZUZ JeFRrNU9SR3hDV2pCV1NGRXdUbmhTTVU1T1RrUnNRbVF3VmtsUlZFSkt VVlZLVGxaclpFaFBSbTh4WTBkd2JVNVhjRmxpYm14NVZsaEtXV1ZXYjN oaE1VSnVZMVZLYkUwd05WbGtWRVpyVmtWR1JWcFRkSGxNTTFreVUyNXd TbE5IZDNwT1ZGWktXakpPU1ZGNlRtaGxTRUp3V1c1R1MxUlRPV2xXTVV wb1VsaHNjV05YVGtSVGJXOHdZV3R3Y21JelpFUmtWM0JYVmtWS1ZWUlZ Uak5TTUU1VVl6QmtRbFZXUmtOYU0xVXhWVEJHYmxWWFdrVlJha1l3VjF ab1QyRkZlRmxWYlhocVRURkdNVmw2U25OaVIwcFlWbTVXYW1WVVJuQmF SVTB4WkZad1dWVlVXbEJXUmtWM1ZGaHdRbFpGU201VWJGcEpWVEZXUmx KRlVrSlRNRXB1V2pOS1Exb3dWa2RSYkVacVVrVkdjVkZWT1VOYU1EVlh VMFpGTkZGclJtMVBSVlpEVVZVeFJGRnFVa0prTUU1dVYxVnNUR0l4Y0V wbGJXOTNVbFZHTTFOVlVsUlJWVVl6Vld4R1Nsb3haREJWU0hCS1UxWm9 XazF0YkRSVmJHaExaRVZXTkZNd1ZtOWhSbkJyV1ZSU1dVc3dWbmRpUm5 CMllsVldTazF1Y0VKTlIxSjZZVzA1UkZOV1JrUk5NSEIzVlZjeFUxZEZ NVWhpYVRsM1RrVktNVTlYYkRaaFYyczFUVzFXYW1KR1VqUk9RemxRVGt oS2MySlVaRTVsVlhoNFlUSm9hMUZVTURsSmJERTVJaXdpYzJsbmJtRjB kWEpsSWpvaWVGVlNXbTFqVjFOR1lVSkVNbU5PYTNJek4yRjZWRGx2YzF kbWVsUmFYM1psUTNOV2FHOHpabmRrUkRaT1VqUm5hRXcyTVZaS2JWbGZ jbUV3WVRReVUzWnZWekpVZFRSWWJHeGtlbnBFT0ZaRWRFTkRSR2NpZlY xOSIsImNyZWF0ZWQtb24iOiIyMDIyLTAzLTAyVDAzOjAxOjI0LjQ2Nlo ifX0", "signatures":[ { "protected": "eyJ4NWMiOlsiTUlJQm96Q0NBVXFnQXdJQkFnSUdBVzBlTHVJRk1Bb0d Richardson & Werner Expires 5 September 2022 [Page 11] Internet-Draft JWS-voucher March 2022 DQ3FHU000OUJBTUNNRFV4RXpBUkJnTlZCQW9NQ2sxNVFuVnphVzVsYzN NeERUQUxCZ05WQkFjTUJGTnBkR1V4RHpBTkJnTlZCQU1NQmxSbGMzUkR RVEFlRncweE9UQTVNVEV3TWpNM016SmFGdzB5T1RBNU1URXdNak0zTXp KYU1GUXhFekFSQmdOVkJBb01DazE1UW5WemFXNWxjM014RFRBTEJnTlZ CQWNNQkZOcGRHVXhMakFzQmdOVkJBTU1KVkpsWjJsemRISmhjaUJXYjN WamFHVnlJRkpsY1hWbGMzUWdVMmxuYm1sdVp5QkxaWGt3V1RBVEJnY3F oa2pPUFFJQkJnZ3Foa2pPUFFNQkJ3TkNBQVQ2eFZ2QXZxVHoxWlVpdU5 XaFhwUXNrYVB5N0FISFFMd1hpSjBpRUx0NnVOUGFuQU4wUW5XTVlPXC8 wQ0RFaklrQlFvYnc4WUtxanR4SkhWU0dUajlLT295Y3dKVEFUQmdOVkh TVUVEREFLQmdnckJnRUZCUWNESERBT0JnTlZIUThCQWY4RUJBTUNCNEF 3Q2dZSUtvWkl6ajBFQXdJRFJ3QXdSQUlnWXIyTGZxb2FDS0RGNFJBY01 tSmkrTkNacWRTaXVWdWdJU0E3T2hLUnEzWUNJRHhuUE1NbnBYQU1UclB KdVBXeWNlRVIxMVB4SE9uKzBDcFNIaTJxZ3BXWCIsIk1JSUJwRENDQVV tZ0F3SUJBZ0lHQVcwZUx1SCtNQW9HQ0NxR1NNNDlCQU1DTURVeEV6QVJ CZ05WQkFvTUNrMTVRblZ6YVc1bGMzTXhEVEFMQmdOVkJBY01CRk5wZEd VeER6QU5CZ05WQkFNTUJsUmxjM1JEUVRBZUZ3MHhPVEE1TVRFd01qTTN NekphRncweU9UQTVNVEV3TWpNM016SmFNRFV4RXpBUkJnTlZCQW9NQ2s xNVFuVnphVzVsYzNNeERUQUxCZ05WQkFjTUJGTnBkR1V4RHpBTkJnTlZ CQU1NQmxSbGMzUkRRVEJaTUJNR0J5cUdTTTQ5QWdFR0NDcUdTTTQ5QXd FSEEwSUFCT2t2a1RIdThRbFQzRkhKMVVhSTcrV3NIT2IwVVMzU0FMdEc 1d3VLUURqaWV4MDZcL1NjWTVQSmlidmdIVEIrRlwvUVRqZ2VsSEd5MVl LcHdjTk1jc1N5YWpSVEJETUJJR0ExVWRFd0VCXC93UUlNQVlCQWY4Q0F RRXdEZ1lEVlIwUEFRSFwvQkFRREFnSUVNQjBHQTFVZERnUVdCQlRvWkl NelFkc0RcL2pcLytnWFwvN2NCSnVjSFwvWG1qQUtCZ2dxaGtqT1BRUUR BZ05KQURCR0FpRUF0eFEzK0lMR0JQSXRTaDRiOVdYaFhOdWhxU1A2SCt iXC9MQ1wvZlZZRGpRNm9DSVFERzJ1UkNIbFZxM3loQjU4VFhNVWJ6SDg rT2xoV1V2T2xSRDNWRXFEZGNRdz09Il0sImFsZyI6IkVTMjU2In0", "signature": "zvtnaEDpOqL49XnYVRbLxVAaZCMRtDiaLqMeFSH3UsjHdz4FT0lFywV 7-5inMpafXTnqqxnD2Gpr3ClUXUyAJg" } ] } A.3. Example Voucher Response (from MASA to Pledge, via Registrar) The following is an example voucher response from MASA to Pledge via Registrar, in "General JWS JSON Serialization". Richardson & Werner Expires 5 September 2022 [Page 12] Internet-Draft JWS-voucher March 2022 { "payload": "eyJpZXRmLXZvdWNoZXI6dm91Y2hlciI6eyJhc3NlcnRpb24iOiJsb2 dnZWQiLCJzZXJpYWwtbnVtYmVyIjoiMDEyMzQ1Njc4OSIsIm5vbmNlI joiNTc0MjY5ODQyMjY4MDQ3MiIsImNyZWF0ZWQtb24iOiIyMDIyLTAz LTAyVDAzOjAxOjI0LjYxOFoiLCJwaW5uZWQtZG9tYWluLWNlcnQiOiJ NSUlCcERDQ0FVbWdBd0lCQWdJR0FXMGVMdUgrTUFvR0NDcUdTTTQ5Qk FNQ01EVXhFekFSQmdOVkJBb01DazE1UW5WemFXNWxjM014RFRBTEJnT lZCQWNNQkZOcGRHVXhEekFOQmdOVkJBTU1CbFJsYzNSRFFUQWVGdzB4 T1RBNU1URXdNak0zTXpKYUZ3MHlPVEE1TVRFd01qTTNNekphTURVeEV 6QVJCZ05WQkFvTUNrMTVRblZ6YVc1bGMzTXhEVEFMQmdOVkJBY01CRk 5wZEdVeER6QU5CZ05WQkFNTUJsUmxjM1JEUVRCWk1CTUdCeXFHU000O UFnRUdDQ3FHU000OUF3RUhBMElBQk9rdmtUSHU4UWxUM0ZISjFVYUk3 K1dzSE9iMFVTM1NBTHRHNXd1S1FEamlleDA2L1NjWTVQSmlidmdIVEI rRi9RVGpnZWxIR3kxWUtwd2NOTWNzU3lhalJUQkRNQklHQTFVZEV3RU Ivd1FJTUFZQkFmOENBUUV3RGdZRFZSMFBBUUgvQkFRREFnSUVNQjBHQ TFVZERnUVdCQlRvWklNelFkc0Qvai8rZ1gvN2NCSnVjSC9YbWpBS0Jn Z3Foa2pPUFFRREFnTkpBREJHQWlFQXR4UTMrSUxHQlBJdFNoNGI5V1h oWE51aHFTUDZIK2IvTEMvZlZZRGpRNm9DSVFERzJ1UkNIbFZxM3loQj U4VFhNVWJ6SDgrT2xoV1V2T2xSRDNWRXFEZGNRdz09In19", "signatures": [ { "protected": "eyJ4NWMiOlsiTUlJQmt6Q0NBVGlnQXdJQkFnSUdBV0ZCakNrWU1B b0dDQ3FHU000OUJBTUNNRDB4Q3pBSkJnTlZCQVlUQWtGUk1SVXdFd 1lEVlFRS0RBeEthVzVuU21sdVowTnZjbkF4RnpBVkJnTlZCQU1NRG twcGJtZEthVzVuVkdWemRFTkJNQjRYRFRFNE1ERXlPVEV3TlRJME1 Gb1hEVEk0TURFeU9URXdOVEkwTUZvd1R6RUxNQWtHQTFVRUJoTUNR VkV4RlRBVEJnTlZCQW9NREVwcGJtZEthVzVuUTI5eWNERXBNQ2NHQ TFVRUF3d2dTbWx1WjBwcGJtZERiM0p3SUZadmRXTm9aWElnVTJsbm JtbHVaeUJMWlhrd1dUQVRCZ2NxaGtqT1BRSUJCZ2dxaGtqT1BRTUJ Cd05DQUFTQzZiZUxBbWVxMVZ3NmlRclJzOFIwWlcrNGIxR1d5ZG1X czJHQU1GV3diaXRmMm5JWEgzT3FIS1Z1OHMyUnZpQkdOaXZPS0dCS Eh0QmRpRkVaWnZiN294SXdFREFPQmdOVkhROEJBZjhFQkFNQ0I0QX dDZ1lJS29aSXpqMEVBd0lEU1FBd1JnSWhBSTRQWWJ4dHNzSFAyVkh 4XC90elVvUVwvU3N5ZEwzMERRSU5FdGNOOW1DVFhQQWlFQXZJYjNv K0ZPM0JUbmNMRnNhSlpSQWtkN3pPdXNuXC9cL1pLT2FFS2JzVkRpV T0iXSwiYWxnIjoiRVMyNTYifQ", "signature": "vyge3GENm1BNcijXT5VH7A8CJWW7wPzH61u2VCfR8E9v8H8Yr3g9 irYz4q5sYj2UnOVIh-hG_ogrZR0Tct_Vzw" } ] } Authors' Addresses Richardson & Werner Expires 5 September 2022 [Page 13] Internet-Draft JWS-voucher March 2022 Michael Richardson Sandelman Software Works Email: mcr+ietf@sandelman.ca Thomas Werner Siemens AG Email: thomas-werner@siemens.com Richardson & Werner Expires 5 September 2022 [Page 14]