---
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: [e-mail]
- ins: H. Birkholz
name: Henk Birkholz
org: Fraunhofer SIT
abbrev: Fraunhofer SIT
email: [e-mail]
street: Rheinstrasse 75
code: '64295'
city: Darmstadt
country: Germany
- ins: M. Riechert
name: Maik Riechert
organization: Microsoft
email: [e-mail]
country: UK
- ins: A. Delignat-Lavaud
name: Antoine Delignat-Lavaud
organization: Microsoft
email: [e-mail]
country: UK
- ins: C. Fournet
name: Cedric Fournet
organization: Microsoft
email: [e-mail]
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

--- middle

# 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].

--- back