RFC 9995 on CBOR Object Signing and Encryption (COSE) Hash Envelope
rfc-editor@rfc-editor.org Tue, 14 July 2026 03:37 UTC
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Subject: RFC 9995 on CBOR Object Signing and Encryption (COSE) Hash Envelope
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A new Request for Comments is now available in online RFC libraries.
RFC 9995
Title: CBOR Object Signing and Encryption (COSE) Hash Envelope
Author: O. Steele,
S. Lasker,
H. Birkholz
Status: Proposed Standard
Stream: IETF
Date: July 2026
Mailbox: orie@or13.io,
stevenlasker@hotmail.com,
henk.birkholz@ietf.contact
Pages: 8
I-D Tag: draft-ietf-cose-hash-envelope-10
URL: https://www.rfc-editor.org/info/rfc9995
DOI: 10.17487/RFC9995
This document defines new CBOR Object Signing and Encryption (COSE) header parameters for signaling a payload as an output of a hash function. This mechanism enables faster validation, as access to the original payload is not required for signature validation. Additionally, hints of the hashed payload's content format and availability are defined, providing references to optional discovery mechanisms that can help to find the original payload content.
This document is a product of the CBOR Object Signing and Encryption Working Group of the IETF.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and
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