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RFC 9942
Title: CBOR Object Signing and Encryption (COSE) Receipts
Author: O. Steele,
H. Birkholz,
A. Delignat-Lavaud,
C. Fournet
Status: Proposed Standard
Stream: IETF
Date: June 2026
Mailbox: [email protected],
[email protected],
[email protected],
[email protected]
Pages: 20
I-D Tag: draft-ietf-cose-merkle-tree-proofs-18
URL: https://www.rfc-editor.org/info/rfc9942
DOI: 10.17487/RFC9942
CBOR Object Signing and Encryption (COSE) Receipts prove properties of a
Verifiable Data Structure (VDS) to a verifier. VDSs and associated Proof Types
enable security properties, such as minimal disclosure, transparency, and
non-equivocation. Transparency helps maintain trust over time and has been
applied to certificates, end-to-end encrypted messaging systems, and supply
chain security. This specification enables concise transparency-oriented
systems by building on Concise Binary Object Representation (CBOR) and COSE.
The extensibility of the approach is demonstrated by providing CBOR encodings
for Merkle inclusion and consistency proofs.
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
suggestions for improvements. Distribution of this memo is unlimited.
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