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Electronic Signature Formats for long term electronic signatures (RFC3126)

IP.com Disclosure Number: IPCOM000005397D
Original Publication Date: 2001-Sep-01
Included in the Prior Art Database: 2001-Sep-21

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Pinkas: AUTHOR [+3]

Abstract

This document defines the format of an electronic signature that can remain valid over long periods. This includes evidence as to its validity even if the signer or verifying party later attempts to deny (i.e., repudiates the validity of the signature).

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 2% of the total text.

Network Working Group D. Pinkas Request for Comments: 3126 Integris Category: Informational J. Ross

N. Pope Security Standards

September 2001

Electronic Signature Formats for long term electronic signatures

Status of this Memo

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2001). All Rights Reserved.

Abstract

This document defines the format of an electronic signature that can remain valid over long periods. This includes evidence as to its validity even if the signer or verifying party later attempts to deny (i.e., repudiates the validity of the signature).

The format can be considered as an extension to RFC 2630 and RFC 2634, where, when appropriate additional signed and unsigned attributes have been defined.

The contents of this Informational RFC is technically equivalent to ETSI TS 101 733 V.1.2.2. The ETSI TS is under the ETSI Copyright (C). Individual copies of this ETSI deliverable can be downloaded from http://www.etsi.org

Pinkas, et al. Informational [Page 1]

RFC 3126 Electronic Signature Formats September 2001

Table of Contents

1. Introduction 4 2 Overview 5 2.1 Aim 5 2.2 Basis of Present Document 5 2.3 Major Parties 6 2.4 Electronic Signatures and Validation Data 7 2.5 Forms of Validation Data 8 2.6 Extended Forms of Validation Data 11 2.7 Archive Validation Data 13 2.8 Arbitration 15 2.9 Validation Process 15 2.10 Example Validation Sequence 16 2.11 Additional optional features 21 3. Data structure of an Electronic Signature 22 3.1 General Syntax 22 3.2 Data Content Type 22 3.3 Signed-data Content Type 22 3.4 SignedData Type 22 3.5 EncapsulatedContentInfo Type 23 3.6 SignerInfo Type 23 3.6.1 Message Digest Calculation Process 23 3.6.2 Message Signature Generation Process 24 3.6.3 Message Signature Verification Process 24 3.7 CMS Imported Mandatory Present Attributes 24 3.7.1 Content Type 24 3.7.2 Message Digest 24 3.7.3 Signing Time 24 3.8 Alternative Signing Certificate Attributes 24 3.8.1 ESS Signing Certificate Attribute Definition 25 3.8.2 Other Signing Certificate Attribute Definition 25 3.9 Additional Mandatory Attributes 26 3.9.1 Signature policy Identifier 26 3.10 CMS Imported Optional Attributes 28 3.10.1 Countersignature 29 3.11 ESS Imported Optional Attributes 29 3.11.1 Content Reference Attribute 29 3.11.2 Content Identifier Attribute 29 3.11.3 Content Hints Attribute 29 3.12 Additional Optional Attributes 30 3.12.1 Commitment Type Indication Attribute 30 3.12.2 Signer Location attribute 32 3.12.3 Signer Attributes attribute 33 3.12.4 Content Time-Stamp attribute 34 3.13 Support for Multiple Signatures 34 3.13.1 Independent Signatures 34 3.13.2 Embedded Signatures 34

Pinkas, et al. Informational [Page 2]

RFC 3126 Electronic Sig...