Salted Challenge Response Authentication Mechanism (SCRAM).pdf
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Internet Engineering Task Force (IETF) C. Newman
Request for Comments: 5802 Oracle
Category: Standards Track A. Menon-Sen
ISSN: 2070-1721 Oryx Mail Systems GmbH
A. Melnikov
Isode, Ltd.
N. Williams
Oracle
July 2010
Salted Challenge Response Authentication Mechanism (SCRAM)
SASL and GSS-API Mechanisms
Abstract
The secure authentication mechanism most widely deployed and used by
Internet application protocols is the transmission of clear-text
passwords over a channel protected by Transport Layer Security (TLS).
There are some significant security concerns with that mechanism,
which could be addressed by the use of a challenge response
authentication mechanism protected by TLS. Unfortunately, the
challenge response mechanisms presently on the standards track all
fail to meet requirements necessary for widespread deployment, and
have had success only in limited use.
This specification describes a family of Simple Authentication and
Security Layer (SASL; RFC 4422) authentication mechanisms called the
Salted Challenge Response Authentication Mechanism (SCRAM), which
addresses the security concerns and meets the deployability
requirements. When used in combination with TLS or an equivalent
security layer, a mechanism from this family could improve the status
quo for application protocol authentication and provide a suitable
choice for a mandatory-to-implement mechanism for future application
protocol standards.
Newman, et al. Standards Track [Page 1]
RFC 5802 SCRAM July 2010
Status of This Memo
This is an Internet Standards Track document.
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). Further information on
Internet Standards is available in 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/rfc5802.
Copyright Notice
Copyright (c) 2010 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.
Newman, et al. Standards Track [Page 2]
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