rfc9576v2.txt		rfc9576.txt
	Internet Engineering Task Force (IETF) A. Davidson		Internet Engineering Task Force (IETF) A. Davidson
	Request for Comments: 9576 LIP		Request for Comments: 9576 NOVA LINCS, Universidade NOVA de Lisboa
	Category: Informational J. Iyengar		Category: Informational J. Iyengar
	ISSN: 2070-1721 Fastly		ISSN: 2070-1721 Fastly
	C. A. Wood		C. A. Wood
	Cloudflare		Cloudflare
	May 2024		June 2024
	The Privacy Pass Architecture		The Privacy Pass Architecture
	Abstract		Abstract
	This document specifies the Privacy Pass architecture and		This document specifies the Privacy Pass architecture and
	requirements for its constituent protocols used for authorization		requirements for its constituent protocols used for authorization
	based on privacy-preserving authentication mechanisms. It describes		based on privacy-preserving authentication mechanisms. It describes
	the conceptual model of Privacy Pass and its protocols, its security		the conceptual model of Privacy Pass and its protocols, its security
	and privacy goals, practical deployment models, and recommendations		and privacy goals, practical deployment models, and recommendations
	skipping to change at line 1274 ¶		skipping to change at line 1274 ¶
	This document has no IANA actions.		This document has no IANA actions.
	9. References		9. References
	9.1. Normative References		9.1. Normative References
	[AUTHSCHEME]		[AUTHSCHEME]
	Pauly, T., Valdez, S., and C. A. Wood, "The Privacy Pass		Pauly, T., Valdez, S., and C. A. Wood, "The Privacy Pass
	HTTP Authentication Scheme", RFC 9577,		HTTP Authentication Scheme", RFC 9577,
	DOI 10.17487/RFC9577, May 2024,		DOI 10.17487/RFC9577, June 2024,
	<https://www.rfc-editor.org/info/rfc9577>.		<https://www.rfc-editor.org/info/rfc9577>.
	[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate		[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
	Requirement Levels", BCP 14, RFC 2119,		Requirement Levels", BCP 14, RFC 2119,
	DOI 10.17487/RFC2119, March 1997,		DOI 10.17487/RFC2119, March 1997,
	<https://www.rfc-editor.org/info/rfc2119>.		<https://www.rfc-editor.org/info/rfc2119>.
	[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC		[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
	2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,		2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
	May 2017, <https://www.rfc-editor.org/info/rfc8174>.		May 2017, <https://www.rfc-editor.org/info/rfc8174>.
	skipping to change at line 1313 ¶		skipping to change at line 1313 ¶
	design.html>.		design.html>.
	[HIJK21] Huang, S., Iyengar, S., Jeyaraman, S., Kushwah, S., Lee,		[HIJK21] Huang, S., Iyengar, S., Jeyaraman, S., Kushwah, S., Lee,
	C-K., Luo, Z., Mohassel, P., Raghunathan, A., Shaikh, S.,		C-K., Luo, Z., Mohassel, P., Raghunathan, A., Shaikh, S.,
	Sung, Y-C., and A. Zhang, "DIT: De-Identified		Sung, Y-C., and A. Zhang, "DIT: De-Identified
	Authenticated Telemetry at Scale", January 2021,		Authenticated Telemetry at Scale", January 2021,
	<https://research.fb.com/privatestats>.		<https://research.fb.com/privatestats>.
	[ISSUANCE] Celi, S., Davidson, A., Valdez, S., and C. A. Wood,		[ISSUANCE] Celi, S., Davidson, A., Valdez, S., and C. A. Wood,
	"Privacy Pass Issuance Protocols", RFC 9578,		"Privacy Pass Issuance Protocols", RFC 9578,
	DOI 10.17487/RFC9578, May 2024,		DOI 10.17487/RFC9578, June 2024,
	<https://www.rfc-editor.org/info/rfc9578>.		<https://www.rfc-editor.org/info/rfc9578>.
	[KLOR20] Kreuter, B., Lepoint, T., Orrù, M., Raykova, M., and		[KLOR20] Kreuter, B., Lepoint, T., Orrù, M., Raykova, M., and
	Springer International Publishing, "Anonymous Tokens with		Springer International Publishing, "Anonymous Tokens with
	Private Metadata Bit", Advances in Cryptology - CRYPTO		Private Metadata Bit", Advances in Cryptology - CRYPTO
	2020, pp. 308-336, DOI 10.1007/978-3-030-56784-2_11, 2020,		2020, pp. 308-336, DOI 10.1007/978-3-030-56784-2_11, 2020,
	<https://doi.org/10.1007/978-3-030-56784-2_11>.		<https://doi.org/10.1007/978-3-030-56784-2_11>.
	[OHTTP] Thomson, M. and C. A. Wood, "Oblivious HTTP", RFC 9458,		[OHTTP] Thomson, M. and C. A. Wood, "Oblivious HTTP", RFC 9458,
	DOI 10.17487/RFC9458, January 2024,		DOI 10.17487/RFC9458, January 2024,
	skipping to change at line 1354 ¶		skipping to change at line 1354 ¶
	Acknowledgements		Acknowledgements
	The authors would like to thank Eric Kinnear, Scott Hendrickson,		The authors would like to thank Eric Kinnear, Scott Hendrickson,
	Tommy Pauly, Christopher Patton, Benjamin Schwartz, Martin Thomson,		Tommy Pauly, Christopher Patton, Benjamin Schwartz, Martin Thomson,
	Steven Valdez, and other contributors of the Privacy Pass Working		Steven Valdez, and other contributors of the Privacy Pass Working
	Group for many helpful contributions to this document.		Group for many helpful contributions to this document.
	Authors' Addresses		Authors' Addresses
	Alex Davidson		Alex Davidson
	LIP		NOVA LINCS, Universidade NOVA de Lisboa
	Lisbon		Largo da Torre
			Caparica
	Portugal		Portugal
	Email: alex.davidson92@gmail.com		Email: alex.davidson92@gmail.com
	Jana Iyengar		Jana Iyengar
	Fastly		Fastly
	Email: jri@fastly.com		Email: jri@fastly.com
	Christopher A. Wood		Christopher A. Wood
	Cloudflare		Cloudflare
	101 Townsend St		101 Townsend St
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