A Revised Internet-Draft is available from the on-line Internet-Drafts
directories. This draft is a work item of the Privacy-Enhanced Electronic
Mail Working Group of the IETF.
Title : PEM Security Services and MIME
Author(s) : S. Crocker, N. Freed, J. Galvin, S. Murphy
Filename : draft-ietf-pem-mime-06.txt
Pages : 26
Date : 07/21/1994
This document specifies how the services of MIME and PEM can be used in a
complementary fashion. MIME, an acronym for "Multipurpose Internet Mail
Extensions", defines the format of the contents of Internet mail messages
and provides for multi-part textual and non-textual message bodies.
PEM, an acronym for "Privacy Enhanced Mail", provides message
authentication/integrity and message encryption services for Internet
mail messages.
An Internet electronic mail message consists of two parts: the
headers and the body. The headers form a collection of field/value
pairs structured according to RFC822 [1], whilst the body, if structured,
is defined according to MIME [2]. MIME does not provide for the
application of security services.
PEM [3-6] specifies how to apply encryption and authentication/integrity
services to the contents of a textual electronic mail message
but does not provide message structuring or type labelling
facilities. This document specifies how to use PEM with the
multipart/signed and multipart/encrypted MIME content types to provide
authentication/integrity and encryption services. We refer to the
authentication/integrity service as a digital signature service.
This document specifies a number of changes to the message encryption
and signature procedures of PEM and broadens the name forms that may be
used to identify public keys. Many of the changes represent a departure
in mechanism, not in effect.
Internet-Drafts are available by anonymous FTP. Login with the
username "anonymous" and password "guest". After logging in,
Type "cd internet-drafts".
"get draft-ietf-pem-mime-06.txt".
Internet-Drafts directories are located at:
o US East Coast
Address: ds.internic.net (198.49.45.10)
o US West Coast
Address: ftp.isi.edu (128.9.0.32)
o Pacific Rim
Address: munnari.oz.au (128.250.1.21)
o Europe
Address: nic.nordu.net (192.36.148.17)
Internet-Drafts are also available by mail.
Send a message to: mailserv(_at_)ds(_dot_)internic(_dot_)net(_dot_) In the
body type:
"FILE /internet-drafts/draft-ietf-pem-mime-06.txt".
NOTE: The mail server at ds.internic.net can return the document in
MIME-encoded form by using the "mpack" utility. To use this
feature, insert the command "ENCODING mime" before the "FILE"
command. To decode the response(s), you will need "munpack" or
a MIME-compliant mail reader. Different MIME-compliant mail readers
exhibit different behavior, especially when dealing with
"multipart" MIME messages (i.e., documents which have been split
up into multiple messages), so check your local documentation on
how to manipulate these messages.
For questions, please mail to
Internet-Drafts(_at_)cnri(_dot_)reston(_dot_)va(_dot_)us(_dot_)
Below is the data which will enable a MIME compliant Mail Reader
implementation to automatically retrieve the ASCII version
of the Internet-Draft.
- <ftp://ds.internic.net/internet-drafts/draft-ietf-pem-mime-06.txt>
-