RFC 4049 · EXPERIMENTAL · 2005

BinaryTime: An Alternate Format for Representing Date and Time in ASN.1

Overview

RFC 4049, “BinaryTime: An Alternate Format for Representing Date and Time in ASN.1”, is an Experimental document published in April 2005 by R. Housley. It has been obsoleted by RFC 6019 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

This document specifies a new ASN.1 type for representing time: BinaryTime. This document also specifies an alternate to the signing-time attribute for use with the Cryptographic Message Syntax(CMS) SignedData and AuthenticatedData content types; the binary-signing-time attribute uses BinaryTime. CMS and the signing-time attribute are defined in RFC 3852. This memo defines an Experimental Protocol for the Internet community.

Abstract as published in the RFC, via rfc-editor.org.

What “Experimental” means

Describes a specification that is part of a research or development effort, published so the community can gain experience with it.

Read this RFC

The canonical text of RFC 4049 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
Obsoleted by
RFC 6019
Other RFCs from 2005

Who Is Online

In total there are 207 users online: 0 registered, 200 guests and 7 bots.

Most users ever online was 1,226 on 13 Jun 2026, 3:56 am.

Bots: AhrefsBot Applebot Baiduspider Facebook Other Bot Other Crawler SemrushBot

Users active in the past 15 minutes. Total registered members: 354