ECDSA Signatures in Verification-Friendly Format
draft-struik-lamps-verification-friendly-ecdsa-00
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Rene Struik
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2021-02-22
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lwig R. Struik
Internet-Draft Struik Security Consultancy
Intended status: Informational February 22, 2021
Expires: August 26, 2021
ECDSA Signatures in Verification-Friendly Format
draft-struik-lamps-verification-friendly-ecdsa-00
Abstract
This document specifies how to represent ECDSA signatures so as to
facilitate fast verification of single signatures and fast batch
verification. We illustrate that this technique can be applied
retroactively by any device (rather than only by the signer), thereby
facilitating transitioning to always generating ECDSA signatures in
this way.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
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 https://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 26, 2021.
Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.
Struik Expires August 26, 2021 [Page 1]
Internet-Draft fast-verification-with-ecdsa February 2021
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
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described in the Simplified BSD License.
Table of Contents
1. Fostering Fast Verification with ECDSA . . . . . . . . . . . 2
2. Review of ECDSA and ECDSA* . . . . . . . . . . . . . . . . . 3
3. Signature Verification with ECDSA and ECDSA* . . . . . . . . 4
4. Transitionary Considerations . . . . . . . . . . . . . . . . 5
5. Implementation Status . . . . . . . . . . . . . . . . . . . . 5
6. Security Considerations . . . . . . . . . . . . . . . . . . . 6
7. Privacy Considerations . . . . . . . . . . . . . . . . . . . 6
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 6
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
10.1. Normative References . . . . . . . . . . . . . . . . . . 6
10.2. Informative References . . . . . . . . . . . . . . . . . 7
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 7
1. Fostering Fast Verification with ECDSA
ECDSA is one of the most widely used elliptic-curve digital signature
algorithms. It has been standardized in FIPS Pub 186-4, ANSI X9.62,
BSI, SECG, and IETF, and is widely deployed by a plethora of internet
protocols specified by the Internet Engineering Task Force (IETF),
with industry specifications in the areas of machine-to-machine
communication, such as ZigBee, ISA, and Thread, with wireless
communication protocols, such as IEEE 802.11, with payment protocols,
such as EMV, with vehicle-to-vehicle (V2V) specifications, as well as
with electronic travel documents and other specifications developed
under a more stringent regulatory oversight regime, such as, e.g.,
ICAO and PIV. ECDSA is the only elliptic-curve based signature
scheme endorsed by regulatory bodies in both the United States and
the European Union.
While methods for accelerated verification of ECDSA signatures and
for combining this with key computations have been known for over 1
1/2 decade (see, e.g., [SAC2005] and [SAC2010]), these have been
commonly described in technical papers in terms of ECDSA*, a slightly
modified version of ECDSA, where their use with standardized ECDSA
seems less well known. It is the purpose of this document to fill
Struik Expires August 26, 2021 [Page 2]
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