Hash-Based Signatures
draft-mcgrew-hash-sigs-00

The information below is for an old version of the document
Document Type Active Internet-Draft (individual)
Last updated 2013-02-18
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
Crypto Forum Research Group                                    D. McGrew
Internet-Draft                                                 M. Curcio
Intended status: Informational                             Cisco Systems
Expires: August 22, 2013                               February 18, 2013

                         Hash-Based Signatures
                       draft-mcgrew-hash-sigs-00

Abstract

   This note describes a digital signature system based on cryptographic
   hash functions, following the seminal work in this area.  It
   specifies a one-time signature scheme based on the work of Lamport,
   Diffie, Winternitz, and Merkle (LDWM), and specifies a general
   signature system using a Merkle tree.  These systems provide
   asymmetric authentication without using large integer mathematics,
   and achieve a high security level.  They are suitable for compact
   implementations, are relatively simple to implement, and naturally
   resist side-channel attacks.  Unlike most other signature systems,
   hash-based signatures would still be secure even if it proves
   feasible for an attacker to build a quantum computer.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 22, 2013.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of

McGrew & Curcio          Expires August 22, 2013                [Page 1]
Internet-Draft            Hash-Based Signatures            February 2013

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

McGrew & Curcio          Expires August 22, 2013                [Page 2]
Internet-Draft            Hash-Based Signatures            February 2013

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5
     1.1.  Conventions Used In This Document  . . . . . . . . . . . .  5

   2.  Notation . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     2.1.  Data Types . . . . . . . . . . . . . . . . . . . . . . . .  6
       2.1.1.  Strings of w-bit elements  . . . . . . . . . . . . . .  7
     2.2.  Operators  . . . . . . . . . . . . . . . . . . . . . . . .  8
     2.3.  Functions  . . . . . . . . . . . . . . . . . . . . . . . .  9

   3.  LDWM One-Time Signatures . . . . . . . . . . . . . . . . . . . 10
     3.1.  Parameters . . . . . . . . . . . . . . . . . . . . . . . . 10
     3.2.  Hashing Functions  . . . . . . . . . . . . . . . . . . . . 11
     3.3.  Signature Methods  . . . . . . . . . . . . . . . . . . . . 11
     3.4.  Private Key  . . . . . . . . . . . . . . . . . . . . . . . 11
     3.5.  Public Key . . . . . . . . . . . . . . . . . . . . . . . . 12
     3.6.  Checksum . . . . . . . . . . . . . . . . . . . . . . . . . 12
     3.7.  Signature Generation . . . . . . . . . . . . . . . . . . . 13
     3.8.  Signature Verification . . . . . . . . . . . . . . . . . . 14
     3.9.  Notes  . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     3.10. Formats  . . . . . . . . . . . . . . . . . . . . . . . . . 15

   4.  Merkle Tree Signatures . . . . . . . . . . . . . . . . . . . . 17
     4.1.  Private Key  . . . . . . . . . . . . . . . . . . . . . . . 17
     4.2.  MTS Public Key . . . . . . . . . . . . . . . . . . . . . . 17
     4.3.  MTS Signature  . . . . . . . . . . . . . . . . . . . . . . 18
       4.3.1.  MTS Signature Generation . . . . . . . . . . . . . . . 18
     4.4.  MTS Signature Verification . . . . . . . . . . . . . . . . 19
     4.5.  MTS Formats  . . . . . . . . . . . . . . . . . . . . . . . 21

   5.  Rationale  . . . . . . . . . . . . . . . . . . . . . . . . . . 22

   6.  History  . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 24

   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 26
Show full document text