A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the S/MIME Mail Security Working Group of the IETF.
Title : Enhanced Security Services for S/MIME
Author(s) : P. Hoffman
Filename : draft-ietf-smime-ess-10.txt
Pages : 36
Date : 15-Dec-98
This document describes three optional security service extensions for
S/MIME. These services provide functionality that is similar to the Message
Security Protocol [MSP4], but are useful in many other environments,
particularly business and finance. The services are:
- signed receipts
- security labels
- secure mailing lists
The services described here are extensions to S/MIME version 3 ([MSG] and
[CERT]), and some of them can also be added to S/MIME version 2 [SMIME2].
The extensions described here will not cause an S/MIME version 3 recipient
to be unable to read messages from an S/MIME version 2 sender. However,
some of the extensions will cause messages created by an S/MIME version 3
sender to be unreadable by an S/MIME version 2 recipient.
This document describes both the procedures and the attributes needed for
the three services. Note that some of the attributes described in this
document are quite useful in other contexts and should be considered when
extending S/MIME or other CMS applications.
The format of the messages are described in ASN.1:1988 [ASN1-1988].
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL NOT',
'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'MAY', and 'OPTIONAL' in this
document are to be interpreted as described in [MUSTSHOULD].
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