Extensible Authentication Protocol (EAP) Authentication Using Only a Password
RFC 5931
| Document | Type |
RFC - Informational
(August 2010; Errata)
Was draft-harkins-emu-eap-pwd (individual in gen area)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5931 (Informational) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Russ Housley | ||
| Send notices to | gwz@netcube.com | ||
Internet Engineering Task Force (IETF) D. Harkins
Request for Comments: 5931 Aruba Networks
Category: Informational G. Zorn
ISSN: 2070-1721 Network Zen
August 2010
Extensible Authentication Protocol (EAP) Authentication
Using Only a Password
Abstract
This memo describes an Extensible Authentication Protocol (EAP)
method, EAP-pwd, which uses a shared password for authentication.
The password may be a low-entropy one and may be drawn from some set
of possible passwords, like a dictionary, which is available to an
attacker. The underlying key exchange is resistant to active attack,
passive attack, and dictionary attack.
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 represents the consensus of the IETF community. It has
received public review and 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/rfc5931.
Harkins & Zorn Informational [Page 1]
RFC 5931 EAP Password August 2010
Copyright Notice
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Background . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. Keyword Definitions . . . . . . . . . . . . . . . . . . . 4
1.3. Requirements . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.1. Resistance to Passive Attack . . . . . . . . . . . . . 4
1.3.2. Resistance to Active Attack . . . . . . . . . . . . . 5
1.3.3. Resistance to Dictionary Attack . . . . . . . . . . . 5
1.3.4. Forward Secrecy . . . . . . . . . . . . . . . . . . . 5
2. Specification of EAP-pwd . . . . . . . . . . . . . . . . . . . 5
2.1. Notation . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2. Discrete Logarithm Cryptography . . . . . . . . . . . . . 7
2.2.1. Finite Field Cryptography . . . . . . . . . . . . . . 7
2.2.2. Elliptic Curve Cryptography . . . . . . . . . . . . . 8
2.3. Assumptions . . . . . . . . . . . . . . . . . . . . . . . 9
2.4. Instantiating the Random Function . . . . . . . . . . . . 9
2.5. Key Derivation Function . . . . . . . . . . . . . . . . . 10
2.6. Random Numbers . . . . . . . . . . . . . . . . . . . . . . 10
2.7. Representation and Processing of Input Strings . . . . . . 11
2.7.1. Identity Strings . . . . . . . . . . . . . . . . . . . 11
Harkins & Zorn Informational [Page 2]
RFC 5931 EAP Password August 2010
2.7.2. Passwords . . . . . . . . . . . . . . . . . . . . . . 11
2.8. Protocol . . . . . . . . . . . . . . . . . . . . . . . . . 12
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