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Security Multiparts for MIME: Multipart/Signed and Multipart/Encrypted (RFC1847)

IP.com Disclosure Number: IPCOM000004103D
Original Publication Date: 1995-Oct-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 9 page(s) / 22K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Galvin: AUTHOR [+4]

Abstract

This document defines a framework within which security services may be applied to MIME body parts. 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. The new content types are subtypes of multipart: signed and encrypted. Each will contain two body parts: one for the protected data and one for the control information necessary to remove the protection. The type and contents of the control information body parts are determined by the value of the protocol parameter of the enclosing multipart/signed or multipart/encrypted content type, which is required to be present.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 12% of the total text.

Network Working Group J. Galvin

Request For Comments: 1847 S. Murphy

Category: Standards Track Trusted Information Systems

S. Crocker

CyberCash, Inc.

N. Freed

Innosoft International, Inc.

October 1995

Security Multiparts for MIME:

Multipart/Signed and Multipart/Encrypted

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Abstract

This document defines a framework within which security services may

be applied to MIME body parts. 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. The new content types are subtypes of

multipart: signed and encrypted. Each will contain two body parts:

one for the protected data and one for the control information

necessary to remove the protection. The type and contents of the

control information body parts are determined by the value of the

protocol parameter of the enclosing multipart/signed or

multipart/encrypted content type, which is required to be present.

Table of Contents

1. Introduction .............................................. 2

2. Definition of Security Subtypes of Multipart .............. 2

2.1 Definition of Multipart/Signed .......................... 3

2.2 Definition of Multipart/Encrypted ....................... 6

3. Definition of Control Information Content Types ........... 9

4. Definition of Key Management Content Types ................ 9

5. Security Considerations ................................... 10

6. Acknowledgements .......................................... 10

7. References ................................................ 10

8. Authors' Addresses ........................................ 11

1. Introduction

An Internet electronic mail message consists of two parts: the

headers and the body. The headers form a collection of field/val...