Elliptic Curve-Based Certificateless Signatures for Identity-Based Encryption (ECCSI)
RFC 6507
| Document | Type |
RFC - Informational
(February 2012; No errata)
Was draft-groves-eccsi (individual in sec area)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6507 (Informational) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Sean Turner | ||
| IESG note | Tim Polk (tim.polk@nist.gov) is the shepherd. | ||
| Send notices to | tim.polk@nist.gov | ||
Internet Engineering Task Force (IETF) M. Groves
Request for Comments: 6507 CESG
Category: Informational February 2012
ISSN: 2070-1721
Elliptic Curve-Based Certificateless Signatures
for Identity-Based Encryption (ECCSI)
Abstract
Many signature schemes currently in use rely on certificates for
authentication of identity. In Identity-based cryptography, this
adds unnecessary overhead and administration. The Elliptic Curve-
based Certificateless Signatures for Identity-based Encryption
(ECCSI) signature scheme described in this document is
certificateless. This scheme has the additional advantages of low
bandwidth and low computational requirements.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This document is a product of the Internet Engineering Task Force
(IETF). It has been approved for publication by the Internet
Engineering Steering Group (IESG). Not all documents approved by the
IESG are a candidate for any level of Internet Standard; see Section
2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6507.
Copyright Notice
Copyright (c) 2012 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
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.
Groves Informational [Page 1]
RFC 6507 ECCSI for Identity-Based Encryption February 2012
Table of Contents
1. Introduction ....................................................2
1.1. Requirements Terminology ...................................3
2. Architecture ....................................................3
3. Notation ........................................................5
3.1. Arithmetic .................................................5
3.2. Representations ............................................6
3.3. Format of Material .........................................6
4. Parameters ......................................................7
4.1. Static Parameters ..........................................7
4.2. Community Parameters .......................................8
5. Algorithms ......................................................8
5.1. User Key Material ..........................................8
5.1.1. Algorithm for Constructing (SSK,PVT) Pair ...........8
5.1.2. Algorithm for Validating a Received SSK .............9
5.2. Signatures .................................................9
5.2.1. Algorithm for Signing ...............................9
5.2.2. Algorithm for Verifying ............................10
6. Security Considerations ........................................11
7. References .....................................................13
7.1. Normative References ......................................13
7.2. Informative References ....................................13
Appendix A. Test Data..............................................14
1. Introduction
Digital signatures provide authentication services across a wide
range of applications. A chain of trust for such signatures is
usually provided by certificates. However, in low-bandwidth or other
resource-constrained environments, the use of certificates might be
undesirable. This document describes an efficient scheme, ECCSI, for
elliptic curve-based certificateless signatures, primarily intended
for use with Identity-Based Encryption (IBE) schemes such as
described in [RFC6508]. As certificates are not needed, the need to
transmit or store them to authenticate each communication is
obviated. The algorithm has been developed by drawing on ideas set
out by Arazi [BA] and is originally based upon the Elliptic Curve
Digital Signature Algorithm [ECDSA], one of the most commonly used
signature algorithms.
The algorithm is for use in the following context:
* where there are two parties, a Signer and a Verifier;
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