Use Cases and Requirements for Web Packages
draft-yasskin-wpack-use-cases-01
Network Working Group J. Yasskin
Internet-Draft Google
Intended status: Informational 27 July 2020
Expires: 28 January 2021
Use Cases and Requirements for Web Packages
draft-yasskin-wpack-use-cases-01
Abstract
This document lists use cases for signing and/or bundling collections
of web pages, and extracts a set of requirements from them.
Note to Readers
Discussion of this draft takes place on the ART area mailing list
(art@ietf.org), which is archived at
https://mailarchive.ietf.org/arch/search/?email_list=art
(https://mailarchive.ietf.org/arch/search/?email_list=art).
The source code and issues list for this draft can be found in
https://github.com/WICG/webpackage (https://github.com/WICG/
webpackage).
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on 28 January 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
Yasskin Expires 28 January 2021 [Page 1]
Internet-Draft Use Cases and Requirements for Web Packages July 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Use cases . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Essential . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1.1. Offline installation . . . . . . . . . . . . . . . . 4
2.1.2. Offline browsing . . . . . . . . . . . . . . . . . . 6
2.1.3. Save and share a web page . . . . . . . . . . . . . . 6
2.1.4. Privacy-preserving prefetch . . . . . . . . . . . . . 7
2.2. Nice-to-have . . . . . . . . . . . . . . . . . . . . . . 7
2.2.1. Packaged Web Publications . . . . . . . . . . . . . . 8
2.2.2. Avoiding Censorship . . . . . . . . . . . . . . . . . 9
2.2.3. Third-party security review . . . . . . . . . . . . . 9
2.2.4. Building packages from multiple libraries . . . . . . 10
2.2.5. Cross-CDN Serving . . . . . . . . . . . . . . . . . . 10
2.2.6. Pre-installed applications . . . . . . . . . . . . . 11
2.2.7. Protecting Users from a Compromised Frontend . . . . 12
2.2.8. Installation from a self-extracting executable . . . 13
2.2.9. Packages in version control . . . . . . . . . . . . . 13
2.2.10. Subresource bundling . . . . . . . . . . . . . . . . 13
2.2.11. Archival . . . . . . . . . . . . . . . . . . . . . . 14
3. Requirements . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1. Essential . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.1. Indexed by URL . . . . . . . . . . . . . . . . . . . 15
3.1.2. Request headers . . . . . . . . . . . . . . . . . . . 15
3.1.3. Response headers . . . . . . . . . . . . . . . . . . 15
3.1.4. Signing as an origin . . . . . . . . . . . . . . . . 15
3.1.5. Random access . . . . . . . . . . . . . . . . . . . . 16
3.1.6. Resources from multiple origins in a package . . . . 16
3.1.7. Cryptographic agility . . . . . . . . . . . . . . . . 16
3.1.8. Unsigned content . . . . . . . . . . . . . . . . . . 16
3.1.9. Certificate revocation . . . . . . . . . . . . . . . 16
3.1.10. Downgrade prevention . . . . . . . . . . . . . . . . 16
3.1.11. Metadata . . . . . . . . . . . . . . . . . . . . . . 17
3.1.12. Implementations are hard to get wrong . . . . . . . . 17
3.2. Nice to have . . . . . . . . . . . . . . . . . . . . . . 17
3.2.1. Streamed loading . . . . . . . . . . . . . . . . . . 17
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