---
# System prepended metadata

title: Concise Encoding of Signed Merkle Tree Proofs

---

---
title: Concise Encoding of Signed Merkle Tree Proofs
abbrev: CoMETRE
docname: draft-steele-cose-merkle-tree-proofs-latest
stand_alone: true
ipr: trust200902
area: Security
wg: TBD
kw: Internet-Draft
cat: std
pi:
  toc: yes
  sortrefs: yes
  symrefs: yes

author:
- ins: O. Steele
  name: Orie Steele
  organization: Transmute
  email: orie@transmute.industries
- ins: H. Birkholz
  name: Henk Birkholz
  org: Fraunhofer SIT
  abbrev: Fraunhofer SIT
  email: henk.birkholz@sit.fraunhofer.de
  street: Rheinstrasse 75
  code: '64295'
  city: Darmstadt
  country: Germany
- ins: M. Riechert
  name: Maik Riechert
  organization: Microsoft
  email: Maik.Riechert@microsoft.com
  country: UK
- ins: A. Delignat-Lavaud
  name: Antoine Delignat-Lavaud
  organization: Microsoft
  email: antdl@microsoft.com
  country: UK
- ins: C. Fournet
  name: Cedric Fournet
  organization: Microsoft
  email: fournet@microsoft.com
  country: UK

normative:
  RFC8949:
  RFC9162:
  RFC6234:
  RFC8032:
  RFC6979:

informative:
  I-D.ietf-cose-countersign:
  I-D.ietf-scitt-architecture:
  CCF_Merkle_Tree:
    target: https://microsoft.github.io/CCF/main/architecture/merkle_tree.html
    title: CCF - Merkle Tree
    author:
      ins: Microsoft Research

--- abstract

Abstract Text

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# Introduction

This specification describes three... insert here

## Requirements Notation

{::boilerplate bcp14-tagged}

# Main



# Privacy Considerations

TBD

# Security Considerations

TBD

# IANA Considerations

## Additions to Existing Registries

### New Entries to the COSE Header Parameters Registry

IANA will be requested to register the new COSE Header parameters defined below in the "COSE Header Parameters" registry at some point

## New Merkle Tree Registry

IANA will be asked to add a new registry "TBD" to the list that appears at https://www.iana.org/assignments/.

The rest of this section defines the subregistries that are to be created within the new "TBD" registry.

### Tree Algorithms {#tree-alg-registry}

IANA will be asked to establish a registry of tree algorithm identifiers, named "Tree Algorithms", with the following registration procedures: TBD

The "Tree Algorithms" registry initially consists of:

| Identifier | Tree Algorithm       | Reference     |
| CCF        | CCF tree algorithm   | This document |
{: title="Initial content of Tree Algorithms registry"}

The designated expert(s) should ensure that the proposed algorithm has a public specification and is suitable for use as [TBD].

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