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Extensions to Salted Challenge Response (SCRAM) for 2 factor authentication

The information below is for an old version of the document.
Document Type This is an older version of an Internet-Draft whose latest revision is Replaced
Author Alexey Melnikov
Last updated 2021-05-02 (Latest revision 2020-10-29)
Replaced by draft-ietf-kitten-scram-2fa
Stream (None)
Expired & archived
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This specification describes an extension to family of Simple Authentication and Security Layer (SASL; RFC 4422) authentication mechanisms called the Salted Challenge Response Authentication Mechanism (SCRAM), which provides support for 2 factor authentication. This specification also gives an example how TOTP (RFC 6238) can be used as the second factor.


Alexey Melnikov

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)